Re: Using a variable for an array name

[Sannyasin Brahmanathaswami via use-livecode]

Peter: FYI multi-dimensional arrays are awesome. I use to be "scared" of them, 
but in RevIgniter we have all kinds of things like

galleriaShow["options"]["width"]["805]

and even more… so I had go understand it.

And, on top of this you  can have an array "inside" a key/value (where the 
value is an array)

Once you wrap your head around this you will never look back!

BR




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Re: Using a variable for an array name

[Peter Bogdanoff via use-livecode]

OK, I’ll test the two methods when I get the general procedure working.


> On Feb 1, 2017, at 7:52 PM, Richard Gaskin via use-livecode 
>  wrote:
> 
> Peter Bogdanoff wrote:
> 
> > Richard, I’ve heard that “do” is slow because it must be compiled
> > every time. I am reiterating this possibly hundreds of times, so
> > it is probably much better to combine the arrays into a Big Array?
> 
> It'll be a little faster, and to my eye much more readable.
> 
> "Do" is a good option when no other option exists. :)
> 
> -- 
> Richard Gaskin
> Fourth World Systems
> Software Design and Development for the Desktop, Mobile, and the Web
> 
> ambassa...@fourthworld.comhttp://www.FourthWorld.com
> 
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Re: Using a variable for an array name

[Richard Gaskin via use-livecode]

Peter Bogdanoff wrote:

> Richard, I’ve heard that “do” is slow because it must be compiled
> every time. I am reiterating this possibly hundreds of times, so
> it is probably much better to combine the arrays into a Big Array?

It'll be a little faster, and to my eye much more readable.

"Do" is a good option when no other option exists. :)

--
 Richard Gaskin
 Fourth World Systems
 Software Design and Development for the Desktop, Mobile, and the Web
 
 ambassa...@fourthworld.comhttp://www.FourthWorld.com

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Re: Using a variable for an array name

[Peter Bogdanoff via use-livecode]

Yes, “do” does it. Thank you Ralph and Bob.

Richard, I’ve heard that “do” is slow because it must be compiled every time. I 
am reiterating this possibly hundreds of times, so it is probably much better 
to combine the arrays into a Big Array?

Peter

> On Feb 1, 2017, at 7:16 PM, Bob Sneidar via use-livecode 
>  wrote:
> 
> Even better!
> 
> Bob S
> 
> 
> On Feb 1, 2017, at 16:08 , Richard Gaskin via use-livecode 
> > wrote:
> 
> Whenever you have a collection of variables whose names may be variable, an 
> array is a natural fit.
> 
> LiveCode supports n-dimensional arrays, so you could use:
> 
> -- Store:
> put "something" into tBigArray["1"]["text"]
> put "somethingelse" into tBigArray["2"]["text"]
> 
> -- Retrieve:
> put tBigArray["1"]["text"] into tSomeVar
> put tBigArray["2"]["text"] into tAnotherVar
> 
> 
> --
> Richard Gaskin
> 
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Re: Using a variable for an array name

[Bob Sneidar via use-livecode]

Even better!

Bob S


On Feb 1, 2017, at 16:08 , Richard Gaskin via use-livecode 
> wrote:

Whenever you have a collection of variables whose names may be variable, an 
array is a natural fit.

LiveCode supports n-dimensional arrays, so you could use:

-- Store:
put "something" into tBigArray["1"]["text"]
put "somethingelse" into tBigArray["2"]["text"]

-- Retrieve:
put tBigArray["1"]["text"] into tSomeVar
put tBigArray["2"]["text"] into tAnotherVar


--
Richard Gaskin

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Re: Using a variable for an array name

[Richard Gaskin via use-livecode]

Peter Bogdanoff wrote:

> I have arrays:
> tArray1
> tArray2
> tArray3
> tArray4
>
> I want to get data from one of them:
>
> put “tArray” & “1” into tVar
> put tVar [“Text”] into tText1
>
> tText1 is empty.
>
> Is there a way to get the data from the arrays without doing this
> kind of thing for each array:
>
> put tArray1 [“Text”] into tText1
> put tArray2 [“Text”] into tText2

Whenever you have a collection of variables whose names may be variable, 
an array is a natural fit.


LiveCode supports n-dimensional arrays, so you could use:

 -- Store:
 put "something" into tBigArray["1"]["text"]
 put "somethingelse" into tBigArray["2"]["text"]

 -- Retrieve:
 put tBigArray["1"]["text"] into tSomeVar
 put tBigArray["2"]["text"] into tAnotherVar


--
 Richard Gaskin
 Fourth World Systems
 Software Design and Development for the Desktop, Mobile, and the Web
 
 ambassa...@fourthworld.comhttp://www.FourthWorld.com

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Re: Using a variable for an array name

[Bob Sneidar via use-livecode]

This is called macro substitution in other languages. You would use the form 
array in Foxpro for instance. LC has no macro Substitution. Instead:

put "put tArray" & tVar & "[temp] into tText" & tVar into tCommand
replace "temp" with quote & "text" & quote in tCommand
do tCommand
(untested)

bob s


On Feb 1, 2017, at 15:13 , Peter Bogdanoff via use-livecode 
> wrote:

I have arrays:
tArray1
tArray2
tArray3
tArray4


I want to get data from one of them:

put “tArray” & “1” into tVar
put tVar [“Text”] into tText1

tText1 is empty.



Is there a way to get the data from the arrays without doing this kind of thing 
for each array:

put tArray1 [“Text”] into tText1
put tArray2 [“Text”] into tText2

Thanks!

Peter Bogdanoff

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RE: Using a variable for an array name

[Ralph DiMola via use-livecode]

"Do" will do the trick.

Repeat with tVarNum = 1 to 4
 do "put"&&"["("Text")&"] into tText"
 do "put"&&"["("SomeOtherArrayValue")&"] into 
tSomeOtherArrayValue"
end repeat

function WrapQ pString
 return quote
end WrapQ

Ralph DiMola
IT Director
Evergreen Information Services
rdim...@evergreeninfo.net


-Original Message-
From: use-livecode [mailto:use-livecode-boun...@lists.runrev.com] On Behalf Of 
Peter Bogdanoff via use-livecode
Sent: Wednesday, February 01, 2017 6:14 PM
To: How to use LiveCode
Cc: Peter Bogdanoff
Subject: Using a variable for an array name

I have arrays:
tArray1
tArray2
tArray3
tArray4


I want to get data from one of them:

put “tArray” & “1” into tVar
put tVar [“Text”] into tText1

tText1 is empty.



Is there a way to get the data from the arrays without doing this kind of thing 
for each array:

put tArray1 [“Text”] into tText1
put tArray2 [“Text”] into tText2

Thanks!

Peter Bogdanoff


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