ActionScript 3.0 :: Property Value Changes When Used In An Expression?
Apr 9, 2011
I'm new to these forums and to actionscript as well, so please excuse my lack of clarity when explaining this situation, I'm learning on my own and in my free time!This isn't really a problem in the sense that I've found a workaround to it, but it's bugging me that I don't understand what's going on in this situation. In the last couple of weeks I have been working on a gridless pathfinding solution for a point & click game, I finally got it done, but I was stuck at some point for a few days and I discovered that there was an x property of a point I was referencing that kept changing back to a previous value assigned to it. I don't know if I'm making any sense, but so you guys see what I'm talking about:
[Code]...
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Oct 2, 2009
Possible Duplicate:In Flash, how would I run an e4x statement when that statement is stored in a String?I know there is an existing question regarding this problem, but it got no replies.Ideally, I would like to stick an e4x expression in a string and run it.
var tempXML:XML = someXML;
var stringe4x:XML = "pictures.picture.(size > 200)";
tempXML.eval(pictures); //something instead of eval
Since AS3 doesn't have eval, this doesn't work; however, there is the ability to use elements() and attributes() to get the elements or attributes on the same XML node level, but this doesn't work for the more complicated e4x filters such as "(id > 300)" or ".." notation.
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Mar 14, 2012
I need to extract the name of the video from the below xml. find the e4x expression for this?
[Code]...
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Feb 3, 2004
First a fabric button sets:
_root.fabricbuttonselected="_root.fabric01";
then the color button sets:
_root.selectedcolor=_root.fabricbuttonselected + "_chip10_name";
This returns the name of a variable:
"_root.fabric01_chip10_name"
however I have preset the variable to "Rose"
_root.fabric01_chip10_name = "Rose";
My dynamic text box is set to:
_root.selectedcolor
but instead of displaying "Rose" it displays"_root.fabric01_chip10_name" Basically I need to get the literal value to equal an expression- how do I do this?
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May 30, 2004
Is it possible to delete an IF expression? Like when you delete an onEnterFrame ?
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Mar 22, 2009
I am scripting a button and something like this: _root.READ = ("image6"); takes me exactly where I want, the frame labeled "image6" However i want to reuse this button and I want to switch it to something like: _root.READ = (trace(this._name)); where it calls upon the instance name (image6). However, this doesn't work, and I believe it's because there are no quotes around the word. Is there someway I can output what the trace calls and put it in quotes?
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Mar 16, 2009
I need to convert a string such as "x*y+2" (from an input text field) into an expression x*y+2, so that it can be evaluated normally, eg f=x*y+2. The variables x and y are already defined and can have various values; I need to evaluate the strings as expressions.
I have tried f=Number("x*y+2") but it seems to work only when the string is actually a number such as "1.2e-4".
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Sep 7, 2011
So why can I evaluate an expression in a switch like so:
[Code]...
If I trace vidList[currentIndex].video before the switch I get "city" but tracing vid after the switch I get null Quickly solved by just assigning to a variable and then using that in the switch... but it still seems odd I can't just do it directly.
[Code]...
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Mar 11, 2010
I've written a url validator for a project I am working on. For my requirements it works great, except when the last part for the url goes longer than 22 characters it breaks. My expression:/((https?)://)([^s.]+.)+([^s.]+)(:d+/S+)/i
It expects input that looks like "http(s)://hostname:port/location". When I give it the input: https://demo10:443/111112222233333444445
it works, but if I pass the input https://demo10:443/1111122222333334444455
it breaks. You can test it out easily at[URL].. Oddly, I can't reproduce the problem with just the relevant (I would think) part /(:d+/S+)/i. I can have as many characters after the required / and it works great. Any ideas or known bugs?
[Code]...
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Mar 14, 2010
I'm having a problem with an expression in my sql statement in SQLite for Adobe AIR basically I have this sql = "UPDATE uniforms SET status=@status WHERE customerId IN(19,20)"; updateStmt.parameters["@status"] = args[1]; updateStmt.execute();
if I run the above code it works, updating the status when the id are 19 and 20
but if I pass the ids list as a parameter like this
sql = "UPDATE uniforms SET status=@status WHERE customerId IN(@ids)";
updateStmt.parameters["@status"] = args[1];
updateStmt.parameters["@ids"] = "19,20";
updateStmt.execute();
it gives me and error, saying could not convert text value to numeric value, which make sense because I'm passing and string but the IN expression should convert it accordingly, like it does when I pass directly the list values, why is not working the other way,
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Feb 4, 2011
I need to evaluate an expression in a string at run time . Not sure how to achieve this in Flex. My requirement is as follows
var test:String = "myparams.id=10" ;
//test will be a string populated at runtime.
// I need to treat it as an expression and evaluate it at runtime
[Code]....
is it possible to do something like this action script 3?
I believe the eval function earlier allowed this, but now it has been depreciated?
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Feb 10, 2009
I'm creating a chat app and I would like to if someone enters a url that it turn color and turn into a hyperlink. I am not sure how to write the regular expression. I guess the approach would be to check for "http://" or "www." or ".com" ?
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Jul 9, 2009
I'm trying to create a replace method that allows me to surround parts of a string with tags. I tried this with a regular replace technique (join and split) but thats case sensitive. what i want is:
: "A nice example line"
and replace "Ice" in that line to surround it with bold tags, result:
text: "A n<b>ice</b> example line"
ActionScript Code:
var str:String = "A nice example line";
var pattern:RegExp = /(w+)-(w+)/gi;
trace(str.replace(pattern, "$2,$1"));
But i just can't figure out the replace pattern
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Sep 18, 2009
I'm a complete novice to ActionScript, OOP and Flash. I have no idea when you are supposed to use the keyword "this". I have searched the forums but obviously searching for the word "this" is not very successful! I've read quite a few tutorials now and it seems that different people have different opinions on when and where it should be used. For example what should I be doing in the following class? Both seem to work but is one the "correct" way? Are there situations where things will not work if you omit the "this"?
ActionScript Code:
public class Sector {
private var _radius:Number;
public function Sector(radius:Number){
[B]this.[/B]_radius = radius;
} public function get radius():Number{
return this._radius;
} public function set radius(value:Number):void{
this._radius = value;
}}
I have another possibly related question with regards to naming conventions. I like the use of underscores for properties with getters and setters but what about the names of the constructor parameters that are used to initialise these properties? In the above example I have used "radius" for the constructor parameter although it is also used for the getter and setter functions. It seems a bit of a palaver to come up with different names for the same quantity but is what I have done really bad coding practice?
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Sep 22, 2011
I have 3 extenal flv files that can be loaded into the main movie when pressing a button.I am using seek and cuePoints to provide a DVD 'chapter-type' navigation.The cue points (in seconds) for each flv are stored as separate arrayshen I click to load a flv, I want to change the array that is being used to seek the playhead.I thought I could do that by using a 'current movie' variable and use an expression to access the relevant array. The essential code (for brevity) is like this:
//
var flv1cuePoint:Array = new Array(10,30,50);
var flv2cuePoint:Array = new Array(30,50,60);
[code].......
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May 30, 2004
Is it posible to delete an IF expression? Like when you delete an onEnterFrame ?
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Apr 8, 2006
Code:
var Happy:Array
Happy[Happy.length] = "_root.Train1_mc"
[code].....
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May 30, 2010
I have a php file that has three variables that are passed to a flash file. I know the variables are going through, as I can display them via input text elements.
one of the variables is called percent I want a movie clip called 'thermo' to go to the frame number that the variable 'percent' has stored. For whatever reason, this is not working
_root
loadVariables("scripts/membership_drive.php", "");
_root.thermo code on frame #1
stop();
gotoAndStop(_root.percent);
Like maybe the script does not see the variable percent as a number?
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Jul 11, 2011
I have a string "5^2". Is there a way to calculate the value of the expression stored in the string?
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Feb 27, 2008
I have some text that is displaying from a database table and inside that text is a web address (i.e.,
[Code]...
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Sep 29, 2011
I am trying to understand some basics of Regular Expressions.For just a experiment I wanted to count the total words in a string.var str:String = "hello, this is some text to count the word hello and to check if Hello is ignored by case and if hellow is different";[code]Here i get the array of the values. and using it's length I can use the total number. This works, but the regular expression is not dynamic.[code]
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Oct 17, 2011
I have a string "52x + 60" and i want to extract 52x and 60 using regular expressions and a switch case
Is this the right way of doing it?
var equation:String = "32x + 5"
var numberExract:RegExp = /d+/
var xExtract:RegExp = /d+/x/
for(var i:Number=0; i<equation.length; i++)
[Code]...
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Oct 17, 2011
I've got this regular expression for decimal points:
var decimalPattern:RegExp = /(d+)(.)(d+)/gi
var result:Object = decimalPattern.exec(equation)
var i:Number = 0
[Code]....
Why is my output when i trace the number array this
3.2
3.2,3,.,2
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Nov 15, 2011
I have a string "4 + x + 5" and i want to change the x to 1x When using a regular expression for x i end up in an endless loop because when the x is changed to 1x, the regular expression finds the x in 1x and applies it to that Is there anyway of making is skip the next character? Here is my code:
[Code]...
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Nov 5, 2010
I'm having a problem converting a regular expression from Python into Flex. My string is something like this:
SELECT "col", othercol,
othercol3" FROM doesn'tmatter...
Python matches just fine:
>>> re.search('select(.*?)from', 'SELECT "col", othercol,
[Code]..
match always ends up null. What am I doing wrong? I'm sure it's obvious to a seasoned Flex programmer...
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Jun 27, 2011
Example: "My site is [URL] and yours is [URL]. Is Fred's [URL]? Or is it[URL]? (I thought his site was [URL], but clearly it's not."
This should extract
[URL]
Notes: it should assume that any punctuation following the url is NOT part of the url, e.g. the comma after [URL], is not part of the url. This includes trailing question marks, which I realize in actuality COULD be part of the url. Of course, if a question mark is followed by querystring data, it SHOULD be considered part of the url. Note that urls might be followed by multiple punctuation marks, as in the the case of (Is your url[URL])?
Urls (and their trailing punctuation, if any) will always be followed by a space, a newline/return character -- or they'll be the end of the string being tested.The will be preceded by a whitespace character or, possibly, an open bracket or parenthesis, as in "Please visit my site [URL]." Or they'll come at the beginning of the string.This regexp should work for http, https and ftp.This is for an Actionscript project. I believe that Actionscript uses the same regular-expression engine as Javascript.
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Jan 29, 2012
I know nothing about flash. I only need to change a few variables in a swf file. the swf file uses ../ for root directory, so, when I play this swf from other places than its designed directory, it will querry wrong URL.Edit: the swf are in this directory:root/domain/content/swfthe swf file has some ../url to querry files under the content directoryroot/domain/content/stuffs/items/filesIf I play the swf in another directory, for example, root/domain/topics/stories/jokes/then, the swf will querry root/domain/topics/stories/jokes/files, this is wrong. So I want to use a fixed expression to replace ../
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Feb 24, 2012
so im trying to figure out regular expressions in Flex, but cant for the life of me figure out how to do the following.From the sample below, i need to extract out only "Mike_Mercury".So i have to somehow strip out everything around it with RegExp, or whatever's best. Also, I would need it to work with other samples as well. Im getting this from the reddit api, so id have to extract that same section from a whole bunch of these.
<table>
<tr>
<td>[code].............
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Oct 21, 2010
I am trying to set an array item as a regular expression.
ActionScript Code:
for(var l:uint=0; l<words.length; l++){
var regString:String = words[l]
var regExp:RegExp = /regString/;
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Feb 3, 2004
[Code]...
My dynamic text box is set to: _root.selectedcolor but instead of displaying "Rose" it displays"_root.fabric01_chip10_name" Basically I need to get the literal value to equal an expression- how do I do this????? I've done this before, but it's slipping my mind.
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