Livecode University on Mac OS 10.8 ?
Does not work. Could anyone please advise me? Richmond. ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: Keyboardactivated but mobilecontroltarget is empty
I put the moving script in the inputBeginEditing and inputEndEditing of the object. It’s work now. ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Keyboardactivated but mobilecontroltarget is empty
Hello, I’ve 2 native input on a card. One is covered by the keyboard so i need to move it when the keyboard is displayed. It’s ok, it’s work. But i need to block this script for the other input. How to know the input that displayed the keyboard ? The mobilecontrotarget() return empty into the « keyboardactivated » script and in the « inputBeginEditing » it’s too late the script of « keyboardactivated » is already done. I’ve also try the « touchstart » script without success. Thanks. ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Valentina Day 2015: Save 50% on VDN / OEM Distribution of Valentina Server
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Re: Reverse a list
Pete, is that a typo, or did you mean to have a semicolon instead of a colon in front of memory? Does ;memory: work, too, or just :memory:? AND HOLY CRAP, yes, Pete, you're right, you were doing 100k records, where the other example was only doing 10k. So doing 100k records with REPEAT WITH took wait for it wait for it Believe me, I was waiting, and waiting, and wating for it FIFTY EIGHT MINUTES AND THIRTEEN SECONDS. REPEAT FOR is .129 seconds, and REPEAT WITH is TWENTY SEVEN THOUSAND TIMES SLOWER (for this operation)??!?!?!?!?!??? Hey, Pete, That's a common technique...WHAT? If it's so common, and all of this is common knowledge, then how come it isn't documented, anywhere, and how come this is the first time I remember EVER hearing about this difference? What else don't I know about??? Grr. You would think that Edinburgh would think about tweaking an algorithm, since REPEAT WITH seems to be a special case of REPEAT FOR, and you can generate the REPEAT WITH behavior by wrapping the REPEAT FOR... On Fri, Feb 13, 2015 at 6:56 PM, Bob Sneidar bobsnei...@iotecdigital.com wrote: Oh thanks. That would have screwed me up if I had tried to use “memory”. Bob S On Feb 13, 2015, at 15:34 , Peter Haworth p...@lcsql.commailto: p...@lcsql.com wrote: We both used in memory databases. The filename is ;memory: ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode -- On the first day, God created the heavens and the Earth On the second day, God created the oceans. On the third day, God put the animals on hold for a few hours, and did a little diving. And God said, This is good. ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: Reverse a list
Typo, should be :memory:. On Sat Feb 14 2015 at 2:01:45 PM Mike Kerner mikeker...@roadrunner.com wrote: Pete, is that a typo, or did you mean to have a semicolon instead of a colon in front of memory? Does ;memory: work, too, or just :memory:? AND HOLY CRAP, yes, Pete, you're right, you were doing 100k records, where the other example was only doing 10k. So doing 100k records with REPEAT WITH took wait for it wait for it Believe me, I was waiting, and waiting, and wating for it FIFTY EIGHT MINUTES AND THIRTEEN SECONDS. REPEAT FOR is .129 seconds, and REPEAT WITH is TWENTY SEVEN THOUSAND TIMES SLOWER (for this operation)??!?!?!?!?!??? Hey, Pete, That's a common technique...WHAT? If it's so common, and all of this is common knowledge, then how come it isn't documented, anywhere, and how come this is the first time I remember EVER hearing about this difference? What else don't I know about??? Grr. You would think that Edinburgh would think about tweaking an algorithm, since REPEAT WITH seems to be a special case of REPEAT FOR, and you can generate the REPEAT WITH behavior by wrapping the REPEAT FOR... On Fri, Feb 13, 2015 at 6:56 PM, Bob Sneidar bobsnei...@iotecdigital.com wrote: Oh thanks. That would have screwed me up if I had tried to use “memory”. Bob S On Feb 13, 2015, at 15:34 , Peter Haworth p...@lcsql.commailto: p...@lcsql.com wrote: We both used in memory databases. The filename is ;memory: ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode -- On the first day, God created the heavens and the Earth On the second day, God created the oceans. On the third day, God put the animals on hold for a few hours, and did a little diving. And God said, This is good. ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: Reverse a list
Mike Kerner wrote: ... REPEAT FOR is .129 seconds, and REPEAT WITH is TWENTY SEVEN THOUSAND TIMES SLOWER (for this operation)??!?!?!?!?!??? Hey, Pete, That's a common technique...WHAT? If it's so common, and all of this is common knowledge, then how come it isn't documented, anywhere The Dictionary entry for repeat notes that the for each form is much faster than with. and how come this is the first time I remember EVER hearing about this difference? Good question. This comes up in the forums and/or this list almost every month or so. The speed difference will vary according to the size of each line and the size of the lines, but order of magnitude is usually a pretty fair minimal expectation for the speed boost with this. It's one of those things we don't think about until we see it in action, and then it seems almost self-evident: Chunk expressions are handy, but expensive. We usually don't think about the expense because the engine's pretty fast, but with large-scale operations like traversing a long list it adds up enough to be significant. Many chunk expressions require the engine to examine the data character by character, keeping track of delimiters as it goes. With this: repeat with i = 1 to the number of lines of tData DoSomethingWith line i of tData end repeat ...the engine first needs to examine every character in tData to count the number of CRs, then each time through the loop it needs to do it again to the next line. First time through it reads from the beginning until the first CR, second time through it goes from the beginning until the second CR, and so forth, so by the time you get several thousand lines into it it's doing the same long character-by-character comparison each time through, getting successively slower and slower. But here: repeat for each line tLine in tData DoSomethingWith tLine end repeat ...the engine only counts to the next CR, puts it into tLine, and remembers where it left off so each time through the loop it's only reading a single line. While the former takes logarithmically longer to complete, the latter scales flatly. What else don't I know about??? Mode 14. :) You would think that Edinburgh would think about tweaking an algorithm, since REPEAT WITH seems to be a special case of REPEAT FOR, and you can generate the REPEAT WITH behavior by wrapping the REPEAT FOR... But there's one key difference which makes each form worth keeping in case you need it: With repeat with i =... the data in the variable being traversed can change. Sometimes you may need that. But with repeat for each... the data being traversed is not allowed to change, because if it did then the line endings might have been altered and its attempt to keep track of where it is would fail. So each form has its own special benefits. I tend to use repeat for each most of the time, but I'm glad repeat with is available for the rare cases where it's useful. -- Richard Gaskin Fourth World Systems Software Design and Development for the Desktop, Mobile, and the Web ambassa...@fourthworld.comhttp://www.FourthWorld.com ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: Cover the complete dual screen desktop with a stack?
Look at the screenRects. It gives you the dimensions of all screens in use, one per line. The top left corner of your main screen is 0,0. Moving to the right and down the numbers increase, while moving above and to the left the numbers decrease as negative numbers. With that you can calculate the rectangle encompassing both screens and it's center location and set your stack to that. Walt On Fri, Feb 13, 2015 at 7:37 PM, Matthias Rebbe | M-R-D matthias_livecode_150...@m-r-d.de wrote: Hi. please excuse, if this post should arrive twice in your inbox But i sent this message already about 6 hrs ago to this list and it did not arrive here or in the online list archive. So i am trying again. I am looking for a way to cover the whole dual screen desktop with a stack. Setting the fullscreen mode only works on the „active“ screen. The screen where the stack is placed after opening. Is there a way to do this in livecode? Regards, Matthias ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: Cover the complete dual screen desktop with a stack?
Sorry, my new email client only showed me the first post... On Fri, Feb 13, 2015 at 11:56 PM, Trevor DeVore li...@mangomultimedia.com wrote: On Fri, Feb 13, 2015 at 7:51 PM, Paul Dupuis p...@researchware.com wrote: On 2/13/2015 7:37 PM, Matthias Rebbe | M-R-D wrote: I am looking for a way to cover the whole dual screen desktop with a stack. Setting the fullscreen mode only works on the „active“ screen. The screen where the stack is placed after opening. Is there a way to do this in livecode? See the screenrects in the dictionary. Get the screenRects for the 2 displays, figure the contiguous coordinates of the combined area and then set the rect of your stack to that. You'll want to consider creating a stack for each line (screen) in the screenrects. On newer versions of OS X, each monitor can be a unique space and a window can't span multiple monitors. -- Trevor DeVore ScreenSteps www.screensteps.com-www.clarify-it.com ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Answer File DIalog
When I select Open from the Textedit File menu, I see a dropdown menu of encodings to be used when I select a file. Is there a way to have that menu appear with the LC answer file dialog? ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Filename of an image
If I set the filename of an image, it correctly loads that file into the image. Say I then change the contents of the file - if I set the filename of the image again, the original file contents remain in the image, presumably because of some caching effect. Is there a way to force the image to be reloaded from the file? I tried setting the filename to empty but that gave me an error (in the message box). ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
RE: Filename of an image
Peter, It is indeed the cache. I spent an entire day trying to figure this one out. I finally found that if there is any reference to that filename in any image container anywhere in your code the cache will not release it. Also changing the image file and reloading it will not clear it from cache either as the file was never deleted. What worked for me was to delete the original image file. The I put the word junk into the filename of every occurrence of that image container. Did a wait of 5 milliseconds then loaded any modified copy of the original and it worked. I had a scratch stack that I occasionally placed substances in for various reasons. I found that one of them had an image container that had my image filename in it and it was the reason the cache wasn't releasing the file. Had forgotten it was even there. It is never called or opened but the cache new it was there. Hope this helps point you in a direction that helps. Rich Maring Sent via the Samsung Galaxy Note® 4, an ATT 4G LTE smartphone Original message From: Peter Haworth p...@lcsql.com Date: 02/14/2015 6:32 PM (GMT-06:00) To: How to use LiveCode use-livecode@lists.runrev.com Subject: Filename of an image If I set the filename of an image, it correctly loads that file into the image. Say I then change the contents of the file - if I set the filename of the image again, the original file contents remain in the image, presumably because of some caching effect. Is there a way to force the image to be reloaded from the file? I tried setting the filename to empty but that gave me an error (in the message box). ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: Answer File DIalog
Yes there is, see answer file with type in the dictionary, but here's example I've used… on mouseUp answer file Choose an Image to import... with defaultFolder with \ type All Images|png,jpg,gif|PNG,JPG,GIF or \ type PNG|png|PNG or \ type GIF|gif|GIF or \ type JPEG|jpg|JPG as sheet if it is empty then exit to top else set the itemDel to slash put the last item of it into fld myImagePath set the fileName of img myImage to it end if end mouseUp HTH Paul On Feb 14, 2015, at 4:29 PM, Peter Haworth p...@lcsql.com wrote: When I select Open from the Textedit File menu, I see a dropdown menu of encodings to be used when I select a file. Is there a way to have that menu appear with the LC answer file dialog? ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: Answer File DIalog
Hi Paul, Right, that's for filtering by file type. What I'm looking for is a menu of encoding types (UTF8, UTF16, etc). If you're on a Mac, run Textedit and choose Open from the File menu and you'll see what I mean. On Sat Feb 14 2015 at 5:10:41 PM Paul Hibbert p...@livecode.org wrote: Yes there is, see answer file with type in the dictionary, but here's example I've used… on mouseUp answer file Choose an Image to import... with defaultFolder with \ type All Images|png,jpg,gif|PNG,JPG,GIF or \ type PNG|png|PNG or \ type GIF|gif|GIF or \ type JPEG|jpg|JPG as sheet if it is empty then exit to top else set the itemDel to slash put the last item of it into fld myImagePath set the fileName of img myImage to it end if end mouseUp HTH Paul On Feb 14, 2015, at 4:29 PM, Peter Haworth p...@lcsql.com wrote: When I select Open from the Textedit File menu, I see a dropdown menu of encodings to be used when I select a file. Is there a way to have that menu appear with the LC answer file dialog? ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: Filename of an image
Thanks Rich. I've temporarily been working round the issue by deleting the image and creating a new one as you mentioned. Fortunately, there's only one image with the filename in question. I was hoping there'd be a more elegant solution than deleting and creating a new image but maybe that's the way it is. I guess I could create my image file with a different name every time I create it. Sounds like there should be a way to switch off image caching. On Sat Feb 14 2015 at 5:04:56 PM maring.richard maring.rich...@gmail.com wrote: Peter, It is indeed the cache. I spent an entire day trying to figure this one out. I finally found that if there is any reference to that filename in any image container anywhere in your code the cache will not release it. Also changing the image file and reloading it will not clear it from cache either as the file was never deleted. What worked for me was to delete the original image file. The I put the word junk into the filename of every occurrence of that image container. Did a wait of 5 milliseconds then loaded any modified copy of the original and it worked. I had a scratch stack that I occasionally placed substances in for various reasons. I found that one of them had an image container that had my image filename in it and it was the reason the cache wasn't releasing the file. Had forgotten it was even there. It is never called or opened but the cache new it was there. Hope this helps point you in a direction that helps. Rich Maring Sent via the Samsung Galaxy Note® 4, an ATT 4G LTE smartphone Original message From: Peter Haworth p...@lcsql.com Date: 02/14/2015 6:32 PM (GMT-06:00) To: How to use LiveCode use-livecode@lists.runrev.com Subject: Filename of an image If I set the filename of an image, it correctly loads that file into the image. Say I then change the contents of the file - if I set the filename of the image again, the original file contents remain in the image, presumably because of some caching effect. Is there a way to force the image to be reloaded from the file? I tried setting the filename to empty but that gave me an error (in the message box). ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: Filename of an image
Seems to work fine here using LC 6.7 on OS X 10.9.5. Setting the fileName of an image by itself shouldn¹t cause an error. How are you modifying the external image? Regards, Scott Rossi Creative Director Tactile Media, UX/UI Design On 2/14/15, 4:32 PM, Peter Haworth p...@lcsql.com wrote: If I set the filename of an image, it correctly loads that file into the image. Say I then change the contents of the file - if I set the filename of the image again, the original file contents remain in the image, presumably because of some caching effect. Is there a way to force the image to be reloaded from the file? I tried setting the filename to empty but that gave me an error (in the message box). ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: Filename of an image
Peter, No way I've found to turn off or manually do anything with the cache. I'm using LC 7.01 rc2 and when I moved to it is when this became a problem for me. It should only be a problem when the image name is unchanged. As the system can still find that name in the cache even though you deleted the physical file on the drive. The physical file needs to be removed and by putting a different file name or some interim junk in the filename reference allows the cache to release it's copy. Rich Sent via the Samsung Galaxy Note® 4, an ATT 4G LTE smartphone Original message From: Peter Haworth p...@lcsql.com Date: 02/14/2015 7:29 PM (GMT-06:00) To: How to use LiveCode use-livecode@lists.runrev.com Subject: Re: Filename of an image Thanks Rich. I've temporarily been working round the issue by deleting the image and creating a new one as you mentioned. Fortunately, there's only one image with the filename in question. I was hoping there'd be a more elegant solution than deleting and creating a new image but maybe that's the way it is. I guess I could create my image file with a different name every time I create it. Sounds like there should be a way to switch off image caching. On Sat Feb 14 2015 at 5:04:56 PM maring.richard maring.rich...@gmail.com wrote: Peter, It is indeed the cache. I spent an entire day trying to figure this one out. I finally found that if there is any reference to that filename in any image container anywhere in your code the cache will not release it. Also changing the image file and reloading it will not clear it from cache either as the file was never deleted. What worked for me was to delete the original image file. The I put the word junk into the filename of every occurrence of that image container. Did a wait of 5 milliseconds then loaded any modified copy of the original and it worked. I had a scratch stack that I occasionally placed substances in for various reasons. I found that one of them had an image container that had my image filename in it and it was the reason the cache wasn't releasing the file. Had forgotten it was even there. It is never called or opened but the cache new it was there. Hope this helps point you in a direction that helps. Rich Maring Sent via the Samsung Galaxy Note® 4, an ATT 4G LTE smartphone Original message From: Peter Haworth p...@lcsql.com Date: 02/14/2015 6:32 PM (GMT-06:00) To: How to use LiveCode use-livecode@lists.runrev.com Subject: Filename of an image If I set the filename of an image, it correctly loads that file into the image. Say I then change the contents of the file - if I set the filename of the image again, the original file contents remain in the image, presumably because of some caching effect. Is there a way to force the image to be reloaded from the file? I tried setting the filename to empty but that gave me an error (in the message box). ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: Reverse a list
Richard, I just read the dictionary entry (again), and I would say that it is not at all clear that there would appear to be an ENORMOUS difference. For starters, you have to read wy down to find the mention, it isn't really called out with a NOTE or anything else to draw one's attention to it, and it is definitely understated. Even mentioning order of magnitude would be better (although it would appear to be an understatement). I literally had no idea until I ran into this, by accident, and was exchanging notes with Peter. The difference is staggering, and it really should be made much more obvious. On Sat, Feb 14, 2015 at 6:25 PM, Peter Haworth p...@lcsql.com wrote: Typo, should be :memory:. On Sat Feb 14 2015 at 2:01:45 PM Mike Kerner mikeker...@roadrunner.com wrote: Pete, is that a typo, or did you mean to have a semicolon instead of a colon in front of memory? Does ;memory: work, too, or just :memory:? AND HOLY CRAP, yes, Pete, you're right, you were doing 100k records, where the other example was only doing 10k. So doing 100k records with REPEAT WITH took wait for it wait for it Believe me, I was waiting, and waiting, and wating for it FIFTY EIGHT MINUTES AND THIRTEEN SECONDS. REPEAT FOR is .129 seconds, and REPEAT WITH is TWENTY SEVEN THOUSAND TIMES SLOWER (for this operation)??!?!?!?!?!??? Hey, Pete, That's a common technique...WHAT? If it's so common, and all of this is common knowledge, then how come it isn't documented, anywhere, and how come this is the first time I remember EVER hearing about this difference? What else don't I know about??? Grr. You would think that Edinburgh would think about tweaking an algorithm, since REPEAT WITH seems to be a special case of REPEAT FOR, and you can generate the REPEAT WITH behavior by wrapping the REPEAT FOR... On Fri, Feb 13, 2015 at 6:56 PM, Bob Sneidar bobsnei...@iotecdigital.com wrote: Oh thanks. That would have screwed me up if I had tried to use “memory”. Bob S On Feb 13, 2015, at 15:34 , Peter Haworth p...@lcsql.commailto: p...@lcsql.com wrote: We both used in memory databases. The filename is ;memory: ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode -- On the first day, God created the heavens and the Earth On the second day, God created the oceans. On the third day, God put the animals on hold for a few hours, and did a little diving. And God said, This is good. ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode -- On the first day, God created the heavens and the Earth On the second day, God created the oceans. On the third day, God put the animals on hold for a few hours, and did a little diving. And God said, This is good. ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: Filename of an image
On 2/14/2015 6:32 PM, Peter Haworth wrote: If I set the filename of an image, it correctly loads that file into the image. Say I then change the contents of the file - if I set the filename of the image again, the original file contents remain in the image, presumably because of some caching effect. Is there a way to force the image to be reloaded from the file? I tried setting the filename to empty but that gave me an error (in the message box). Apparently not: http://quality.runrev.com/show_bug.cgi?id=11407 -- Jacqueline Landman Gay | jac...@hyperactivesw.com HyperActive Software | http://www.hyperactivesw.com ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: Answer File DIalog
On 2/14/2015 7:24 PM, Peter Haworth wrote: What I'm looking for is a menu of encoding types (UTF8, UTF16, etc). If you're on a Mac, run Textedit and choose Open from the File menu and you'll see what I mean. I don't think you can from the answer file dialog. BBEdit has the same kind of dropdown as Text Ediit, btw, so the OS supports it (or at least, OS X does.) Might be a good feature request, since the unicode capability has introduced the need for this. -- Jacqueline Landman Gay | jac...@hyperactivesw.com HyperActive Software | http://www.hyperactivesw.com ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: Reverse a list
Harking back to the original discussion on reversing a list -- still the subject of this thread, here's the original example as I saved it in my library. function reverseSort pList, pDelim -- reverse sorts an arbitrary list --ie, item/line -1 - item/line 1, item/line -2 - item/line 2, etc. -- pDelim defaults to cr -- from an exchange on the use-LC list --this was the fastest pure LC method of several proposed if pDelim = empty then put cr into pDelim split pList by pDelim put the keys of pList into indexList put the number of lines of indexList into i repeat for each line tLine in indexList -- tLine is never used, but repeat for each is faster than repeat n times --and this iterates the correct number of times put pList[i] pDelim after outList subtract 1 from i end repeat delete char -1 of outList return outList end reverseSort Note that the repeat is a repeat for each line tLine… even though the value of tLine is never actually used within the repeat loop. It's incredibly fast to do it that way, and it's an easy way to repeat something a foreseeable number of times. Using a repeat n times is glacial by comparison. I do agree that the dictionary should not just say the repeat for each form is much faster, it should say the repeat for each form is MUCH, MUCH faster. -- Peter Peter M. Brigham pmb...@gmail.com http://home.comcast.net/~pmbrig On Feb 14, 2015, at 6:00 PM, Richard Gaskin wrote: Mike Kerner wrote: ... REPEAT FOR is .129 seconds, and REPEAT WITH is TWENTY SEVEN THOUSAND TIMES SLOWER (for this operation)??!?!?!?!?!??? Hey, Pete, That's a common technique...WHAT? If it's so common, and all of this is common knowledge, then how come it isn't documented, anywhere The Dictionary entry for repeat notes that the for each form is much faster than with. and how come this is the first time I remember EVER hearing about this difference? Good question. This comes up in the forums and/or this list almost every month or so. The speed difference will vary according to the size of each line and the size of the lines, but order of magnitude is usually a pretty fair minimal expectation for the speed boost with this. It's one of those things we don't think about until we see it in action, and then it seems almost self-evident: Chunk expressions are handy, but expensive. We usually don't think about the expense because the engine's pretty fast, but with large-scale operations like traversing a long list it adds up enough to be significant. Many chunk expressions require the engine to examine the data character by character, keeping track of delimiters as it goes. With this: repeat with i = 1 to the number of lines of tData DoSomethingWith line i of tData end repeat ...the engine first needs to examine every character in tData to count the number of CRs, then each time through the loop it needs to do it again to the next line. First time through it reads from the beginning until the first CR, second time through it goes from the beginning until the second CR, and so forth, so by the time you get several thousand lines into it it's doing the same long character-by-character comparison each time through, getting successively slower and slower. But here: repeat for each line tLine in tData DoSomethingWith tLine end repeat ...the engine only counts to the next CR, puts it into tLine, and remembers where it left off so each time through the loop it's only reading a single line. While the former takes logarithmically longer to complete, the latter scales flatly. What else don't I know about??? Mode 14. :) You would think that Edinburgh would think about tweaking an algorithm, since REPEAT WITH seems to be a special case of REPEAT FOR, and you can generate the REPEAT WITH behavior by wrapping the REPEAT FOR... But there's one key difference which makes each form worth keeping in case you need it: With repeat with i =... the data in the variable being traversed can change. Sometimes you may need that. But with repeat for each... the data being traversed is not allowed to change, because if it did then the line endings might have been altered and its attempt to keep track of where it is would fail. So each form has its own special benefits. I tend to use repeat for each most of the time, but I'm glad repeat with is available for the rare cases where it's useful. ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
