>> Mark wrote:
>> This is getting annoying.
> Klaus wrote:
> I just deleted 71 slavic spam postings from the forum manually again,
> now THAT is getting annoying!
+71 for you. Thanks for that.
But better stop manual deletion now. As long as you do that probably nothing
will improve/change. It wo
@Mark
*** Thanks for your expertise. I couldn't do that this perfectly. ***
One of the reasons for posting this JPNG stack is to show the power of LC:
The essential code of compressing PNG -> JPNG and decompresing PNG -> JPNG
is both less than 10 *essential* lines of code, using comfortable LC to
JPNG (named using JPEG and PNG) is not an image format but a compression method.
We use the file ending ".lcjpng" for that.
It takes features from both JPEG (setting JPEGquality to compress the imageData
and from the PNG compression the alphaData/transparency). It saves the
alphaData,
optionally
Is it a good idea to implement a bignum library in LC Builder?
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> Mark wrote:
> but I'm annoyed that the IDE doesn't give me an overflow warning if I try
> to perform an operation on a number that's bigger than 0x.
> Instead, it just happily trims it down to an unsigned integer and proceeds
> to give me a wrong result.
Hey Mark.
Don't complain because
Have you already seen the answer from here:
https://stackoverflow.com/questions/9585487/cant-get-coordinates-of-touchevents-in-javascript-on-android-devices
??
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Did you already read
https://www.html5rocks.com/en/mobile/touch/
to that?
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> Richard H. wrote:
> I'm also bothered by *not* being able to use a text literal in quotes;
> I'm generally vary careful about declared variables, etc. (I'd really
> like an option to enforce case in variable names!)
on mouseUp
put "hello" into p1
put quote&"hello""e into p2
set the p1 of m
> Tore wrote:
> And change the script in the BASH button to something like this:
> on mouseUp pAltKey
> if pAltKey then
> answer "Alt key was down"
> else
> answer "Alt key was up"
> end if
> end mouseUp
Tore, we have to use a second param, e.g.
on mouseUp pButton, pAltkey
The firs
> JLG wrote:
> In what circumstance would it be necessary to quote the property name?
Use "&" in a key, for example the "G&T" of me
> Mark wrote:
> What doesn't work at the moment is if you have a var name which is
> quoted:
>
> local catness
> put "minimal" into catness
> set the "catness" of
Two examples for testing ambiguity.
[a]
set "8.1" of me to "I dreamt to be quoted"
set 8.1 of me to "I dreamt to be 8.2"
put the customProperties of me into cp
put cp["8.1"] &" : "& cp[8.1] &" : "& cp[8+1/10]
Test and then interchange the first two lines and test again.
[b]
set "G&T" of
> Richmond wrote:
> Sorry about the asterisks . . .
> That is what happens when one copy-pastes directly from the LiveCode
> scriptEditor into Thunderbird.
Specify the default character encodings for sending and receiving messages
Menu location: Thunderbird > Preferences > Display > Formatting -
> Bob wrote:
> Wha??? I didn't know this existed. I have a need for that too! I use
> a repeat loop to do this. I suppose that is what this function does as well.
Here is it, for a "direct" call, in case revSBLibrary is not available.
It does the same as Tore's (and probably your) script but is
> Brian wrote:
> Check out _revSBEnsureFolder in revSBLibrary for example code that does this.
Brian, WOW! This is great insight!
on mouseUp
put "/Users/admin/Documents/brian3/showed/us/the/trick/of/marcus/" into ff
call "revSBEnsureFolder ff" of stack "revSBLibrary"
launch document ff
end
The following recipe is for use in LC 7/8/9. In LC 6 setting the label
sets also the menuhistory.
Delete your "set menuhistory line" and add the following to the script
of your button 1:
on mouseDown
set the menuhistory of me to lineoffset(the label of me, me)
end mouseDown
> jbv wrote:
> I ha
> Monte wrote:
> ... G&T drinking holiday ;-)
Practising Geometry & Trigonometry and drinking??
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> Jonathan wrote:
> It sounds like I need to find a way to detect the processing speed
> of the device.
Did you alread try to use webgl? See the source of
https://browserleaks.com/webgl
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Please
I have already done what you describe in a HTML5 standalone for displaying
progress along a Bezier curve, using LC Script only.
http://hh.on-rev.com/html5/hhProgressHTML5_2-8.0.2X.html
And it is done for all LC's SVG icons using the jquery-drawsvg plugin in
a browser widget (incl. optional affine
> Mark wrote:
> So, at the level of the graphic object it is a true arc, at the level of
> instructing
> the graphics library it is a Bézier approximation but at the level of working
> out what
> pixels to render it is a polygon.
Thanks for arriving from your previous post at this very clear sta
Actually you don't see "sides" of a regular 360-gon because the engine
uses "trunc()" differing from my "round()" used earlier in this thread.
So the approximation using "round" may be better in case you are scaling
such points lists.
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> BR wrote:
>> HH wrote:
>> A circle is, just like a Bezier curve, a mathematical model, for thinking,
>> doing mathematics. Not realizable in our virtual world.
>> What you can have and what you see are (more or less good) approximations
>> to that model, here nothing more than simple polygons
The effective points of an oval (circle) are the 360 points of a regular
polygon with 360 vertices (if it's closed). You could look at stack #2 of
the Raspi-Collection, runs on Mac/Win/linux using LC 6/7/8/9:
http://forums.livecode.com/viewtopic.php?p=98716#p98716
(in LC 8/9 add a semicolon after
if there is no img "Nova.png" then create img "Nova.png"
A file is created by LiveCode if not existing,
but NOT an image, it has to be created by you.
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> Mark wrote:
>> How do you define "strict geometry"?
> That would be my seventh-grade math teacher
>> And what is an "infinite amount"?
> For points in an oval, that would be Aleph-one, no?
I see. When you selected to return 360 points for the effective
points of an oval (what is, TMHO, a 'na
> Bob S. wrote:
> By strict geometry, an infinite amount. Using Bezier, 4. :-)
Just because I am curious which part of your statement is the joke:
How do you define "strict geometry"?
And what is an "infinite amount"?
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[Once again, without typos (although it works correctly with the typos)]
The following runs in LC 6/7/8/9.
### yields points of an 'elliptical' n0-sided polygon,
### for a 'circular' shape set rx=ry.
-- n0 is the number of vertices (= n0+1 points for a closed polygon)
-- rx is the horizontal radi
> BR wrote:
> 1) draw graphic oval name: "moveClue1"
> 2) create small image "word_1"
> move image "word_1" to the points of grc "moveClue1" in 2 seconds
> OK, so how can we generate the points of a perfect oval?
> > Scott wrote:
> > You can use the effectivePoints to get the points of any grap
Hi Al.
Yes. I saw this mistake several times. The misleading thing is, TMHO,
the name "transformation matrix" for [a,b,c,d,e,f] (because the listing
is pairwise for columns, as you now describe, and not for rows).
Let me explain that a bit simpler for readers who don't know or forgot
linear/matri
> Alex wrote:
> the "same domain" limitation makes it unfeasible for me to use it
> for now.
You can test it with a local web server. I use this always for testing in HTML5
(e.g. using python as described in the HTML5 deployment guide of the dictionary
"Testing your HTML5 app ...").
So I hope you
Al, your script is wrong. You are building the matrix in a wrong way.
It is no bug! With your 'workaround' you point yourself to the lines
where you did make the mistake.
http://lists.runrev.com/pipermail/use-livecode/2017-July/240074.html
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> Monte wrote:
> I’m not really sure that A/B tests of the IDE is something we should be
> attempting to do at all as we don’t have the resources to do it with the
> number of people required to get decent data.
+42
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> Alex wrote:
> So I won't wait for my next question should that same simple
> app work when built as an HTML5 standalone ? (9.0DP8 Indy, MacOS
> 10.10.5, Chrome 59) (hint: right now, it doesn't - click on the
> button, it highlights and then nothing else happens until we
> get the "Page
Hi Al.
This is not a bug, your script is wrong.
If TM is a,b,c,d,e,f then you have to do
put item 1 of pArgs into tMatrix[0,0]
put item 2 of pArgs into tMatrix[1,0]
put item 3 of pArgs into tMatrix[0,1]
put item 4 of pArgs into tMatrix[1,1]
this yields correct results.
[In fact you
> Mark wrote:
> I'm not sure relating this to RaspPi is useful. The reason is that if I
> am wanting to move my Desktop app (Mac, Windows, Linux) app to HTML5
> then I'd want the performance in the browser to be within a reasonable
> distance of that when on the Desktop...
> ...The only way to k
@Matthias
"revbrowserOpenCEF" is deprecated since at least one year or so.
Also note: revBrowserInstances() doesn't work after"revbrowserOpenCEF".
Also note if you use revBrowserOpen:
Then Mac is the only platform that supports HTML5/canvas2d.
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Wow. You say (using stars) it would make sense to implement wait
in HTML5 for some features that do _not_ (yet) work in HTML5.
Will be a great enhancement side-effect. I look forward to that.
Peter-B already implemented wait in 2015, see bug #16076.
This caused an _additional_ slow down by a facto
#wait
I don't miss the "wait" handler in HTML5 and I wouldn't miss it in LC Script.
I even don't know of any use case where "send in " (which works perfectly
in HTML5) isn't superior to "wait". Especially when connected to move/animation.
Also I don't miss "wait" in LC Builder. There OnTimer() is
> Mark wrote:
> However, there is one VERY important point I do need to make. It is easy
> to get hang up on saying 'oh the HTML5 engine doesn't do this, and oh it
> doesn't do that' - and this might well be true. *However* the only important
> metric in this regard is - does it allow a suitable
Of course my "look-up" in the IDE:
revIDENewMainstack max(,400),max(,400)
is quick and dirty compared to the clever plugin-solution of Klaus:
http://lists.runrev.com/pipermail/use-livecode/2017-July/239883.html
Sorry Klaus. I overlooked your post. I really write too much and read
too fast
Forget to remark:
revIDENewMainstack 40,30 = revIDENewMainstack 400,400
because
revIDENewMainstack yourWidth,yourHeight
sets new width to the maximum of yourWidth and 400
sets new height to the maximum of yourHeight and 400
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> Richmond wrote:
> From LiveCode 8.0 upwards when one wants a new stack one is given a
> menu of choices for iPads, iPhones and so on.
> Is there a way to edit that menu PERMANENTLY so one can accommodate
> one's own sizes?
Just type into the messageBox
revIDENewMainstack ,
for example:
*** The following is how I judge this, not based on any 'official document'. ***
Depends a little bit upon what you are doing. The javascript part of the calling
web page is always accessible, no matter the license. So, important parts that
you have as javascript in the standalone's webpage are pr
> RG wrote:
> - What are the use-cases where a native app is a better choice than a web app?
> - What are the perceived benefits of web apps and native apps?
> The first question is about actual capabilities, and the second is about the
> psychological drivers of clients and customers, which may or
> RG wrote:
> My bigger question here is what needs to be delivered specifically
> in a web browser window vs a native app, and why?
This questions browsers ("the web") as platform in general.
TMHO, you are too late with that question, by 25 years.
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> Mike K. wrote:
> My perception is that the web experience is very close to a desktop-native
> experience, and the two are almost interchangable. Running an app in a
> browser feels and works almost the same as a native one does.
The HTML5 standalone builder has greatly improved within the last y
> JLG wrote:
> In my case, the app is courseware and students are complaining they want it
> to work on their mobile devices. Some don't have laptops and don't want to
> use the computer lab. The options are to create mobile apps or alternately
> run it in the mobile browser.
There is currently
The following works here.
on browserNavigateBegin pUrl
put the URL of widget "browser" into uri
put pURL &cr& uri &cr & (uri begins with "http://livecode.com";)
end browserNavigateBegin
Possibly your URL conflicts with the standards-compliant URL?
> Tore N. wrote:
> I am currently preparing
AppleScript didn't change since v7.
But networking did ...
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> Mark wieder wrote:
> It's in process to becoming "beta" ...
... while "the mouse" still always reports "up".
It's a miracle.
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> JLG wrote:
> I have a client that wants to move our project to HTML5. I have
> some doubts about the capabilities, could someone tell me what is
> currently possible and what is not?
Wait until Mark Waddingham's talk about HTML5. Even he will probably
not be able to answer the "what is not"-part
The HTML5 standalone builder is still "experimental".
Has been "very experimental" until July 2017.
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> Roger E. wrote:
> Is there a browser widget command that will do it?
(Yet another option):
YES.
Set the URL of a browser widget to https://www.coinbase.com/charts
and get (via a timer) the htmltext of the browser widget. This is the
_generated_ source.
You can now search and find the needed o
Of course you can get the display in a browser widget by
setting the htmltext alone if you give the image source
_directly_ (as part of the htmltext) as base64 encoded data.
"
[After LC-base64-encode replace linefeed with empty in the data.]
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Browser widget:
Use a HTML-file and set the URL of the widget to that file.
Setting the htmltext alone in order to get an image from a server
usually doesn't work (what is the same with all browsers, this is
not LC-special). If you wish to work with the image, you may have
to respect the same-origi
Stanford University replaces Java with JavaScript as an introductory
programming language
https://www.neowin.net/news/stanford-university-dumps-java-as-an-introductory-programming-language
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Pleas
The backdrop is a problem for the linux platform since I'm with LiveCode (4
years now). If you ever click on linux into the backdrop you are lost.
That's why this was my first Raspi stack: a 'work-around' for that.
(Raspi stacks collection #1)
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> Mark Waddingham wrote:
> On 2017-07-17 11:05, panagiotis merakos via use-livecode wrote:
> > @Hermann
> > I am not sure if "{}" were left out on purpose or not, I'll ask Monte.
> > However, if you want to add them, you have to:
>
> On Purpose. '{' is not a valid LCS bracket - so it shouldn't be
> Richmond M. wrote:
> That's because Richmond doesn't share your sense of humour,
> and never really could understand North American jokes . . .
As I read this thread (as a non-native speaker), none of the jokes
was against you as person. And mine was based on a very old forum
thread connected to
> Panos M. wrote:
> Script Editor: Support for auto completion of square bracket `[`,
> parenthesis `(` or double quote `"` is now added.
After writing a long script I really like this feature and miss it
already in LC 8.1.6.
I wonder what's the reason to leave out braces "{}" (may be needed for
> JLG wrote:
> Has anyone noticed that since we hijacked this thread, Richmond has
> disappeared?
He has the lost sock, because men wearing kilts have three woollen socks.
(Sorry, if you laugh now, one minute later, you are wrong. They simply have
a spare sock with them, just like a good car has
An option for James could be to put ONE html-file in the images folder
with content:
And then set any image of that images folder by changing the HTML by
javascript:
on mouseUp
put "flower2.png" into nn -- give the name directly
put line 42 of myImages into nn -- a list containing the image
> Jonathan wrote:
> Is this part of the same-source policy for web pages? The HTML file and the
> image file
> needing to be in the same folder?
No. I wrote this only because the example used a relative path pointing to the
same folder:
> Example htmltext of the widget or text of the file "flow
You can have that without a (local) server when using a browser widget.
Although you can NOT display an image from disk without javascript by
only setting the htmltext with a correct filepath, for example as follows.
(This is a browser engine thing, can not be influenced by the widget.)
Example h
... Or in case you meant simple HTML load (not canvas2d):
where src = "full http-path to image" (local server is running)
or src = "relative path to image"
for example:
src="http://localhost:/tests/images/myimage42.png";
src="../images/myimage42.png"
The relative path has to be relative to
You have to set it in the HTML, with HTML-syntax.
LC Script may help with that by sending the imagedata to the HTML page.
Examples how to do this can be found (look at handler "chooseScript" in the
card's script and make the widget or revBrowser display visible) as follows.
[a] using a browser w
> RG wrote:
> I would caution against adding more stuff to the Prefs window, for
> reasons too lengthy to indulge in here.
The new stuff could replace "Compatibility" (and "Updates" could be replaced
with one link to downloads.livecode.com).
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Very good:
The idea and also all the refinement proposals.
It would also be great if the prototypes were editable.
Bad:
Some of the prototypes use protected names like "filename" as parameters.
So they don't compile ...
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May be connected to fullscreen mode (=black) or windowed mode (=working).
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Just to 'complete' this thread.
Detected today a good solution by Roger Guay from 2012, still up-to-date
(this solution is in between a full gauge and a circular slider)
http://livecodeshare.runrev.com/stack/645/RadialDialOmatic
> Yet another solution: RotationControl.
>
> This is a control I r
Thank you very much for that.
This solves the situation where the LC-8 version and the LC-9 version are the
same (have the same lcb file).
Thus you can only have widgets that use LCB-syntax/features that are present
in both LC-8 and LC-9, especially no new/different LCB features from LC-9.
> Kev
This is the current situation:
[*] A stack that contains a widget that is compiled with LC 8.1.5
can not be used with any other LC version than LC 8.1.5,
[*] A stack that contains a widget that is compiled with LC 9.0.0
can not be used with any other LC version than LC 9.0.0
Mark Waddingham did re
-- d0 is what you judge as "is at about zero" for your input
-- select it such in size, that you don't get an "overflow" or
-- such that 1/d0 is your max ± vertical plot value (= clipping)
function f3 x
local d0=0.001
if abs(x-3) < d0 then
return empty -- don't plot in case of an empt
http://quality.livecode.com/show_bug.cgi?id=19887
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Hi William,
this is a great demo, especially your (clever) library functions.
It works all fine here and it is really the base one needs for getting
everything else through the GMap APIs.
Of course, every LC user from all over the world who is not used to work
with numeric coords would be happy t
185 backers. No comment.
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Hi all,
a few remarks, may be marginal.
Some of the problems with the CEF browsers arise from the fact that
the "same origin policy" changed. Some of the latest versions of the
main browsers make the access easier.
Also, when using webGL, this differs between browsers and the browser
widget in t
Reading the description once again, this should be titled:
*** Faster Graphics in LiveCode (especially DataGrid 2) ***
That is: Everybody who uses the Graphical user interface will profit if that
work is done.
Sadly: I don't think the goal will be reached in 10 hours from 51% to 100%.
117 backer
> Kevin M. wrote:
> I¹m not sure if its apathy or more likely just the holiday weekend ...
> ... Android has been mostly delivered and the other platforms and stretch
> goals are a small piece now. We really have finally cracked this project,
> getting it into a build is the last step ...
> ... If
Yet another solution: RotationControl.
This is a control I recently made for use at LC Global in November:
An "ovalslider"-group that is under the control of a behavior button.
Attach the behavior to any LC-Object that has an angle property.
Runs with LC 6/7/8/9 on Mac/Win/linux or with LC 6/7 o
@Jonathan.
Why dont't you simply use one single server-side HTML5 page to get
reports and upload images?
Has moreover the advantage that you can update the page (incl. the
method and targets used therein) without having to update your apps.
>From that reason I would even prefer it to rawClipboard
Did you already try ... url("binfile:" & it & ".rtf")?
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@Terry.
Because we make a snapshot this is independent of the browser's content.
So at least for isolating the problem you will find below a variant that
'snapshots' directly to a file in your stack's folder.
Then the file is opened with preview via applescript. Here I get exactly
what I want.
Of
@Bill.
No thank for that. I started to work with javascript in November 2016 when
the HTML5 standalone builder introduced "do as javascript". It was now a
good exercise because your javascript source is by an expert, written very
clear and clean.
Please show us your final product (doesn't matter i
This works here.
on mouseUp
local ii="myImage", bb="Browser"
if there is no img ii then create img ii
put globalLoc(the topLeft of widget bb) into TL
put globalLoc(the botRight of widget bb) into BR
export snapshot from rect (TL,BR) to img ii as PNG
hide widget bb -- avoid artefacts fr
Sorry all, I'm used to work in the forums where one can easily edit posts to
remove errors and typos.
So here another correction, a constant (pixelsPerLonRadian) was wrong in the
first two versions above.
My last version, hope it's all correct now:
local MERCATOR_RANGE=256, pixelOrigin, pixelsPe
William,
sorry I made a mistake, you have to replace "log10" by "ln".
Hermann
=
Here the full correct script:
local MERCATOR_RANGE=256, pixelOrigin, pixelsPerLonDegree, pixelsPerLonRadian
on mouseUp
put (55.9537534, -3.1988236) into centerPoint -- LC Home
put 10 into zom -- zo
This is the LC translation of the linked javascript from stackoverflow:
(I checked and simplfied a little bit the math, the Mercator projection is OK,
very clever there!):
It works here, happy mapping:
local MERCATOR_RANGE=256, pixelOrigin, pixelsPerLonDegree, pixelsPerLonRadian
on mouseUp
put
@ Ali.
> Ali wrote:
>> hh wrote:
>> In Oct 2016 I made a digital widget clock, published in
>> the forum > LC Builder > Community widgets:
>> http://forums.livecode.com/viewtopic.php?p=146968#p146968
>> [And there: "Doesn't work in the HTML5 standalone builder."]
> It should now work in HTML5 too
In Oct 2016 I made a digital widget clock, published in
the forum > LC Builder > Community widgets:
http://forums.livecode.com/viewtopic.php?p=146968#p146968
Simply use the lcb file to recompile it with the LC version
you wish to use. Currently the binary lce files from LC 8 are
not usable in LC 9
You may use the technique of a stack I made in April 2017 on base of
a discussion started by you in the list:
http://lists.runrev.com/pipermail/use-livecode/2017-April/236632.html
I posted it just now here (Raspi stacks collection #100)
http://forums.livecode.com/viewtopic.php?p=155414#p155414
__
To have it in sync with the system clock:
send "updateClock" to me in (1000 - the millisecs mod 1000) millisecs
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pre
A marginal note connected to some nice ideas of this thread:
In LC Builder
handler xx (param1, param2) requires to call xx always with two args.
So, to use one single parameter that is a list or an array is
currently the _only_ way to have optional parameters (which are then
elements of that sing
> RG wrote:
> The human mind can generally hold between three and seven things in
> conscious memory at any given time.
How did you measure that?
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Hi all,
closely connected to that, not this much advanced as Bernd's jewel
modTableField, another 'jewel'-stack by Scott:
http://forums.livecode.com/viewtopic.php?p=129767&sid=fbca74cc652e7760ce1f837e482dc57a#p129767
H.
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> BR wrote:
> but to be able to address the properties of the object referred
> to by a variable containing the long ID of an object/
> How do we do that?
I think the "rule" is [assume objID is the long id of an object]
get|set of objID --- works for *properties* of the object
the number of li
> Richmond wrote:
> I want to put "cheese" into the third column across of the third line
> down of my Table Field "TF"
You could try:
set the itemdelimiter to tab
put "cheese" into item 3 of line 3 of fld "TF"
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> BR wrote:
> but to be able to address the properties of the object referred to by a
> variable containing the long ID of an object/
> How do we do that?
put the long id of fld 1 into fID
put the short name of fID into sID
put the number of lines of fld sID
The canvas2d dataURL-methods (and LC's base64-methods) are so far optimized that
it is even slower if one directly sends and receives arrays, I tried it.
There could be more gain (what would give a speed-up-factor of up to 500) by
using webGL, but this has issues with some 'black-listed' graphic c
Here is a stack that compares simple grayLevel- and invert-filter
for an image of size 1920x1080, needs LC 8 or 9. It shows the power
of this "external" we have via LC Builder/the browser widget.
go stack url ("http://hh.on-rev.com/xstacks/speedComparison.livecode";)
or download the file
http://hh
> What is "js-package"? If the "js" isn't JavaScript, what is it?
I used "package" in the sense of npm. Most packages are modules
https://docs.npmjs.com/how-npm-works/packages
And yes, js is short for javascript, the usual file ending.
Using the browser widget enables HTML5 as a superset of java
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