The seconds logic is no different then what you are doing. I am sure that if you saw the code behind the <@days> tag, it is probably doing exactly what I am doing. Because the totalseconds property of a date object in C, C++, and therefore RB is the master property of a date object.
This is where the beauty of OOP programming and class inheritance comes in. The "date" class is a standard class built into realbasic, and usually a similar class would be found in any Java or other programming environment. It has basic properties and methods assigned to it. Let us say that it has only 7 properties, and only one method. It has 6 integer properties of day, month and year, hour, minute, and second and a double property of totalseconds, and a method that returns a string called abbreviated date.
To set the date, I create a new date, and set the integer properties. Then I could call the totalseconds property, and the abbreviateddate string like:
dim d as date
d = new date //this initialize the d var as a date object and sets it to the current timestamp.
d.year = 1968 d.month = 12 d.day = 24
return d.abbreviateddate //returns a string of my bday
This would return a string like "Thurs, Dec. 24, 1968"
Now lets say I need to write a program with a lot of date calcs, and I want to simplify the code. I could "Extend" the date class. I would create a new class called "benDate" for instance. I could create a new method called addDays to the bendate class and its code would look like this:
Sub addDays(days as integer)
if me = nil then
Return
end ifme.TotalSeconds = me.TotalSeconds + 86400 End Sub
Now, I can write code like this:
dim d as date dim s as string
d = new date d.year = 1968 d.month = 12 d.day = 24
s = d.abbreviateddate //s now equals "Thurs, Dec 24, 1968"
d.adddays(1)
s = d.abbreviateddate //s now equals "Fri, Dec 25, 1968"
d.addays(6)
s = d.abbreviateddate //now it equals new years 1969.
The possiblities are endless for extending the date class, and creating new methods and properties. I may want to set the date using a string like "12/24/1968" so I would build a method called setDate() that would take a string parameter, parse it, and set the date. Then my code could be:
dim d as date dim s as string
d = new date
d.setDate("12/24/1968")s = d.abbreviateddate //s now equals "Thurs, Dec 24, 1968"
d.adddays(1)
s = d.abbreviateddate //s now equals "Fri, Dec 25, 1968"
d.addays(6)
s = d.abbreviateddate //now it equals new years 1969.
So using the <@days> tag I am sure uses the same logic I used at a lower level. You just don't get to see the code the Witango server runs to process your tag.
Robert.
On Wednesday, July 2, 2003, at 12:56 AM, Ben Johansen wrote:
Ok, so you are cleaning my clock :-)
I have changed the calcs into a TCF and also matched your logic.
Robert, Could you run the test against your server with the new "workdates3.taf" which calls "daycalc.tcf"?
This will be a more accurate time run because it is using the seconds model
you used in RB.
also included is the seconds logic in just a taf "workdates2.taf" (no tcf
call)
could you run this time test on your server
Ben Johansen - http://www.pcforge.com -Authorized WiTango Reseller http://www.pcforge.com/WitangoGoodies.htm -Authorized Alt-N Reseller http://www.pcforge.com/AltN.htm
-----Original Message----- From: Robert Garcia [mailto:[EMAIL PROTECTED] Sent: Tuesday, July 01, 2003 7:03 PM To: [EMAIL PROTECTED] Subject: Re: Witango-Talk: Boosting Server Performance, and TCFs
OK, I created an application in RealBasic, and compiled for all platforms. It can be downloaded here:
http://public.bighead.net/workdaytest/
I also set up the workday taf on my test server and it can be run here:
http://poh.bighead.net/workday/
With the default values, spanning 46020 days my witango v5.1.058 server running on Windows 2000 server, AMD proc. running at 1.5ghz, with 512megs ram, and a 266FSB, it should take 15 seconds. If it takes longer, it is because a couple of you are hitting it at once.
Now If I run my RB app on the same machine, it takes about 1/3 of a second if I do not give a progress indication, and about a second if I do. That is even more of a performance increase than I expected. On my mac, the results are about the same, except the progress calc takes just over 2 seconds.
Also, I am running my calc within its own thread. If I were to not thread the process, and disable background tasks, I could probably squeeze out another 10% performance.
Here is my code from the RB method, you can download the rb project from the link above:
Sub calcWDays() dim sDate,eDate,iDate as date dim nDays,wDays,sTicks,eTicks as double dim i as integer dim s as string
sTicks = ticks
sDate = new date eDate = new date
sDate.year = sDateDC.year sDate.month = sDateDC.month sDate.day = sDateDC.day
eDate.year = eDateDC.year eDate.month = eDateDC.month eDate.day = eDateDC.day
nDays = (eDate.totalSeconds - sDate.totalSeconds)/86400
wDays = 0
iDate = new date
iDate = sDate
for i = 1 to nDays
s = str(iDate.DayOfWeek)
if iDate.dayofweek > 1 and iDate.dayofweek < 7 then
wDays = wDays + 1
end if
iDate.TotalSeconds = iDate.TotalSeconds + 86400
next
eTicks = ticks
s = "The total number of dates between "+sDate.abbreviatedDate+" and
"+eDate.abbreviatedDate+" is "+str(nDays)+". "
s = s + "The number of workdays in between is "+str(wDays)+" and the
time taken to calculate was "+str((eTicks-sTicks)/60)+" seconds."
msgBox s
End Sub
I tried to make the RB method as Identical to the one in Ben's taf as possible as you can see. sDateDC and eDateDC are the date control objects that the user interacts with.
Robert.
On Tuesday, July 1, 2003, at 06:09 PM, Ben Johansen wrote:
Cool and while you at it make the week day taf into a tcf and create a new custom tag called <@DATEDIFFWK> LOL!.
Ben Johansen - http://www.pcforge.com -Authorized WiTango Reseller http://www.pcforge.com/WitangoGoodies.htm -Authorized Alt-N Reseller http://www.pcforge.com/AltN.htm
-----Original Message----- From: Robert Garcia [mailto:[EMAIL PROTECTED] Sent: Tuesday, July 01, 2003 5:05 PM To: [EMAIL PROTECTED] Subject: Re: Witango-Talk: Boosting Server Performance, and TCFs
Actually, you could instantiate one field, then build an array of fields to the nth, building an array of field objects, and then loop through them referencing like so:
for x = 1 to 10000000 field(x) = "some value" next x
I just downloaded your weekday taf, I will do a test with it.
Robert.
On Tuesday, July 1, 2003, at 04:51 PM, Ben Johansen wrote:
Yes, when all factors are know the compiled code is quick.
In your example you have 10 and it looks nice an simple. Now multiply it by 10 and then maintain it. :-P
Take the example I just sent with workdates.taf write a case statement for all possible dates. Aaaaaah.
The number of times that I had a loop that I know all the factors I could probably count on my hands and ok I will take off my shoes also ;-)
The nature of a loop is dynamics, placing the case within the loop is to me not intuitive but is required for a compiler.
I am just going by experience and IMHO I will take dynamics over compiled.
Ben Johansen - http://www.pcforge.com Authorized Witango Reseller http://www.pcforge.com/WitangoGoodies.htm Authorized MDaemon Mail Server Reseller http://www.pcforge.com/AltN.htm
-----Original Message----- From: Robert Garcia [mailto:[EMAIL PROTECTED] Sent: Tuesday, July 01, 2003 4:37 PM To: [EMAIL PROTECTED] Subject: Re: Witango-Talk: Boosting Server Performance, and TCFs
There really is no increase in code. I do this all the time in a single
conditional statement like:
for x = 1 to 10
select case x
case 1 field_1 = "some value" case 2 field_2 = "some value" case 3 field_3 = "some value" case 4 field_4 = "some value" case 5 field_5 = "some value" case 6 field_6 = "some value" case 7 field_7 = "some value" case 8 field_8 = "some value" case 9 field_9 = "some value" case 10 field_10 = "some value" next x
There are other ways also, this is the simplest. Another way is to build an array of objects, and loop through them.
I think you underestimate the level of performance gain you get when you compile versus interpret on the fly on complex tasks. Especially processing loops. I will do a test and get back to this with some results.
Robert.
On Tuesday, July 1, 2003, at 02:32 PM, Ben Johansen wrote:
You are correct, and this is where I question the speed boost.it,
On one hand you have the quicker run speed but on the other hand you have the increased amount of code due to lose of this dynamic.
There is no easy conversion of code and mindset between them.
Ben Johansen - http://www.pcforge.com
Authorized Witango Reseller http://www.pcforge.com/WitangoGoodies.htm
Authorized MDaemon Mail Server Reseller
http://www.pcforge.com/AltN.htm
-----Original Message----- From: Robert Garcia [mailto:[EMAIL PROTECTED] Sent: Tuesday, July 01, 2003 2:20 PM To: [EMAIL PROTECTED] Subject: Re: Witango-Talk: Boosting Server Performance, and TCFs
dynamic referencing a table is one thing, that should be ok. What I mean is referencing an object dynamically like you can do with javascript/flash with the eval() function.
For instance, in javascript/flash, if you have a set of fields, named
field_1, and field_2, and so on to field_10, they could be referenced
dynamically like so:
for x = 1 to 10 eval("field_"+str(x)) = "some value" next x
The same could be done in witango with a bunch of arguments, <@arg field_1>, and so on.
<@for start=1 stop=10 step=1> <@addrows local$newArray <@arg field_<@currow>>> </@for>
I don't believe this could be done in a compiled language. You would have to use a select case method or build an array of objects or something.
Robert.
On Tuesday, July 1, 2003, at 01:47 PM, Atrix Wolfe wrote:
you could still do dynamic referencing if they made allowances forcollection.
like if they stored a table w/ the names of the vars and pointers to them.
If you can make java bytecodes though and then use gcc to make that into an executable or dynamic library, would you really need With to make a witango compiler? That is assuming you dont lose anything like dynamic referencing in either of those 2 steps.
I've been kind of wondering about this since With said you could make
doesn'ttango into java bytecodes though...if you made your code into java bytecodes, does it support dynamic referencing TCF's, includes etc?
Just wondering if could expect any and all code to work the same whether it was tango or java bytecodes.
----- Original Message ----- From: "Robert Garcia" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Tuesday, July 01, 2003 1:25 PM Subject: Re: Witango-Talk: Boosting Server Performance, and TCFs
Just because our tafs would be compiled in some native format,mean we would have to start worrying about things garbagefortaf,The compiled tcf would would have in/out points and process data
within. It would run within the memory space of the witango server,
and
the server would handle the garbage collection and the nasty stuff.
The
main benefit would be that complex methods in a tcf would not be
scripted, but compiled so that there would be no tag processing and
the
other performance drags that are inherant with an interpreted
language.
It would mean, though, that certain things you can do in a tml oryou could not do, like dynamic referencing.
Robert.
On Tuesday, July 1, 2003, at 09:49 AM, Scott Cadillac wrote:
But it does add several layers of complexity too. I'm not an expert
at
this
level by any means, but it seams to me that Witango isn't ready to
support
this kind of low-level environment (nor any interpreted language-that matter, e.g., ColdFusion).
For example, garbage collection and other memory allocation issues_____________________________________________________________________ _____________________________________________________________________ _what sort of Metatags would we need for this?
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