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  • problem on strings, tuple strings

    - by suresh
    Write a function, called constrainedMatchPair which takes three arguments: a tuple representing starting points for the first substring, a tuple representing starting points for the second substring, and the length of the first substring. The function should return a tuple of all members (call it n) of the first tuple for which there is an element in the second tuple (call it k) such that n+m+1 = k, where m is the length of the first substring. Complete the definition def constrainedMatchPair(firstMatch,secondMatch,length):

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  • jQuery getting class

    - by andrei
    $(document).ready(function(){ $('img').click(function(){ var class = $("img").attr("class"); console.log(class); }); }); Back with another question. I have 3 images each with a different class (image1, image2, image3). If i run the code above the log will only show the class of the first image no matter what image I click on

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  • Can I use "map" as a substitute for "for each"/"for in"?

    - by John Mee
    For a little while now javascript has the "map" function to loop over arrays. It appears possible to use it as a 'foreach' operator for example: var arr = ['a','b','c'] var doubles = arr.map(function(val){ return val + val }) Is this better or worse than saying for(var i in arr){ ... 50/50: saves having to use the index but adds a callback; it doesn't seem very common so I hesitate to use it but still want to.

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  • IE jQuery ajax results in a stack overflow

    - by dave
    I have the following code that in IE gives me an error in jQuery for "open(G,M.url,M.async" $("#submitButton").click(function(){ $.ajax({ type: "POST", url: "http://url.com/postChat.php", data: "comment="+$("#userInput").val(), success: function(msg){ } }); }); Any ideas as to why this would happen in IE?

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  • color letters in a div

    - by Growler
    I've created a palindrome checker. I want to take it one step further and show the letters being compared as it is being checked. HTML: <p id="typing"></p> <input type="text" id="textBox" onkeyup="pal(this.value);" value="" /> <div id="response"></div> <hr> <div id="palindromeRun"></div> JS: To do this, I run the recursive check... Then if it is a palindrome, I run colorLetters(), which I'm trying to highlight in green each letter as it is being checked. Right now it is just rewriting palindromeRun's HTML with the first letter. I know this is because of the way I'm resetting its HTML. I don't know how to just grab the first and last letter, change only those letters' css, then increment i and j on the next setTimeout loop. var timeout2 = null; function pal (input) { var str = input.replace(/\s/g, ''); var str2 = str.replace(/\W/, ''); if (checkPal(str2, 0, str2.length-1)) { $("#textBox").css({"color" : "green"}); $("#response").html(input + " is a palindrome"); $("#palindromeRun").html(input); colorLetters(str2, 0, str2.length-1); } else { $("#textBox").css({"color" : "red"}); $("#response").html(input + " is not a palindrome"); } if (input.length <= 0) { $("#response").html(""); $("#textBox").css({"color" : "black"}); } } function checkPal (input, i, j) { if (input.length <= 1) { return false; } if (i === j || ((j-i) == 1 && input.charAt(i) === input.charAt(j))) { return true; } else { if (input.charAt(i).toLowerCase() === input.charAt(j).toLowerCase()) { return checkPal(input, ++i, --j); } else { return false; } } } function colorLetters(myinput, i, j) { if (timeout2 == null) { timeout2 = setTimeout(function () { console.log("called"); var firstLetter = $("#palindromeRun").html(myinput.charAt(i)) var secondLetter = $("#palindromeRun").html(myinput.charAt(j)) $(firstLetter).css({"color" : "red"}); $(secondLetter).css({"color" : "green"}); i++; j++; timeout2=null; }, 1000); } } Secondary: If possible, I'd just like to have it colors the letters as the user is typing... I realize this will require a setTimeout on each keyup, but also am not sure how to write this.

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  • Loosely coupled implicit conversion

    - by ltjax
    Implicit conversion can be really useful when types are semantically equivalent. For example, imagine two libraries that implement a type identically, but in different namespaces. Or just a type that is mostly identical, except for some semantic-sugar here and there. Now you cannot pass one type into a function (in one of those libraries) that was designed to use the other, unless that function is a template. If it's not, you have to somehow convert one type into the other. This should be trivial (or otherwise the types are not so identical after-all!) but calling the conversion explicitly bloats your code with mostly meaningless function-calls. While such conversion functions might actually copy some values around, they essentially do nothing from a high-level "programmers" point-of-view. Implicit conversion constructors and operators could obviously help, but they introduce coupling, so that one of those types has to know about the other. Usually, at least when dealing with libraries, that is not the case, because the presence of one of those types makes the other one redundant. Also, you cannot always change libraries. Now I see two options on how to make implicit conversion work in user-code: The first would be to provide a proxy-type, that implements conversion-operators and conversion-constructors (and assignments) for all the involved types, and always use that. The second requires a minimal change to the libraries, but allows great flexibility: Add a conversion-constructor for each involved type that can be externally optionally enabled. For example, for a type A add a constructor: template <class T> A( const T& src, typename boost::enable_if<conversion_enabled<T,A>>::type* ignore=0 ) { *this = convert(src); } and a template template <class X, class Y> struct conversion_enabled : public boost::mpl::false_ {}; that disables the implicit conversion by default. Then to enable conversion between two types, specialize the template: template <> struct conversion_enabled<OtherA, A> : public boost::mpl::true_ {}; and implement a convert function that can be found through ADL. I would personally prefer to use the second variant, unless there are strong arguments against it. Now to the actual question(s): What's the preferred way to associate types for implicit conversion? Are my suggestions good ideas? Are there any downsides to either approach? Is allowing conversions like that dangerous? Should library implementers in-general supply the second method when it's likely that their type will be replicated in software they are most likely beeing used with (I'm thinking of 3d-rendering middle-ware here, where most of those packages implement a 3D vector).

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  • stoppin pipeline - POwershell

    - by laertejuniordba
    Hi all I am using New-Object System.Management.Automation.PipelineStoppedException To stop the pipeline OK..works.. But how Can I test in the next cmdlet if was stopped ? Foo1 | foo2 | foo3 Stop in foo1, but goes to foo2. I want to test if was stopped in foo1 to stop too in each function function foo1 { process { try { #do } catch { New-Object System.Management.Automation.PipelineStoppedException } } and still going to the next cmdlet, as stopped by error I want to stop in each next cmdlets..:) Thanks !!!

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  • What is target="_new"? validator giving error..

    - by jitendra
    What is target="_new"? validator giving error.. How to do this with jquery bcoz Validator giving error on same page i have target="_new" and target="_blank" target="_new" is in that form code which i received from email newsletter company I'm using this for target="_blank" $(function() { $('a[href^=http]').click( function() { window.open(this.href); return false; }); }); What should i do for target="_new"

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  • PHP + jQuery - undefined index: , but it still posts successfully?

    - by Ben Bernards
    When inserting a record to a database, the server returns an 'undefined index: category', error, but still posts the successfully... $('#button).click(function(){ var newvendor = $('#input_vendor).val(); newplantcode = $('#input_plantcode).val(); newcategory = $('#input_category).val(); $.post("php/addSite.php", {vendor: newvendor, plant_code: newplantcode, category: newcategory}, // <--- Error on this line, for some reason... function(result){ console.log("server returned : " + result); [ RELOAD THE PAGE ] }

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  • strtotime() doesn't work with dd/mm/YYYY format!

    - by Syom
    I really like the strtotime() function, but the user manual doesn't give a complete description of the supported date formats. strtotime('dd/mm/YYYY') doesn't work, it works only with mm/dd/YYYY format. if i have date in dd/mm/YYYY format, ho can i convert it to YYYY-mm-dd? i can do it by using explode() function, but i think tere are better solution. Thanks

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  • want to start programming

    - by Dan
    I really want to learn how to program. A friend suggested I buy vs 2005 or a newer version if I'm serious about it. Is there a cheaper route? I would like to start with c#.

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  • When I use facebook connect how much access do I have to the user's friends?

    - by user220755
    So, if you sign in using facebook on my website, how much access do I have to your friends? I am asking this question because I want for example to know if a user asks me a question about his/her friend, I can go through their Facebook status messages for example and tell them the answer depending on parsing information but do I have access to the user's friends information or no? (And how can I do that if it is possible in another way)

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  • typeof for html plugin elements

    - by gf
    When using ECMAScripts typeof on plugin elements (i.e. embed or object), Safari & FireFox return "function": typeof(window.document['myPlugin']) // "function" This can't be influenced on the plugin side, as the browser doesn't call the plugin here. Funny enough, in IE the same line evaluates to "object". Is that simply implementation dependent behaviour as per ECMAScript §11.4.3 or am i missing something here?

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  • Finding the position of the max element

    - by Faken
    Is there a standard function that returns the position(not value) of the max element of an array of values? For example: say i have an array like this: sampleArray = [1, 5, 2, 9, 4, 6, 3] I want a function that returns the integer of 3 that tells me that sampleArray[3] is the largest value in the array.

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  • window.location alternatives in JavaScript

    - by MartyIX
    What is a standardized alternative to window.location.href function? I was checking on w3schools.com that it is implemented in all major browsers so there's no problem but I'm rather curious how to do that properly. From here is the statement that the function is not standardized: https://developer.mozilla.org/en/DOM/window.location Thanks!

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  • DOUBLE_CLIC dont work in actionscript3

    - by ScarX
    I have MyMovie.addEventListener(MouseEvent.CLICK, goClick) function goClick(e:MouseEvent):void { trace("Trololo"); } It's work. Why don't work? MyMovie.addEventListener(MouseEvent.DOUBLE_CLICK, goDouble) function goDouble(e:MouseEvent):void { trace("Trololo"); }

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  • Open Source Salon Management Software Suggestions?

    - by Brian Scott
    I'm looking for a decent open source salon management system to recommend to a friend. I've considered writing a new system in .Net but the website aspect is already covered. What's really required at this stage is an decent reservation and stock management application that I could put in place for them. If there are recommendations for commericial pacakages which are reasonably priced I would also like to hear them. Thanks.

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  • in Python find number of same elements in 2 lists

    - by John
    Hi, In Python if I have 2 lists say: l1 = ['a', 'b', 'c', 'd'] l2 = ['c', 'd', 'e'] is there a way to find out how many elements they have the same. In the case about it would be 2 (c and d) I know I could just do a nested loop but is there not a built in function like in php with the array_intersect function Thanks

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  • Calling all the 3 functions while using or operator even after returning true as a result.

    - by Shantanu Gupta
    I am calling three functions in my code where i want to validate some of my fields. When I tries to work with the code given below. It checks only for first value until it gets false result. I want some thing like that if fisrt function returns true then it should also call next function and so on. What can be used instead of Or Operator to do this. if (IsFieldEmpty(ref txtFactoryName, true, "Required") || IsFieldEmpty(ref txtShortName, true, "Required") || IsFieldEmpty(ref cboGodown, true, "Required")) { }

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  • jQuery: Need to "refresh" a widget.

    - by Legend
    I am adapting the Coverflow technique to work with a div. The coverflow function (included as a js file in the head section) is here. When I dynamically add a DIV, it doesn't show up in the coverflow. I am wondering if there is a way to add a destroy function to this js file so that whenever a new div add is added, I can call the destroy method and then reinstantiate. Any suggestions on how I should go about doing this?

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  • jQuery multiple class selection

    - by morpheous
    I am a bit confused with this: I have a page with a set of buttons (i.e. elements with class attribute 'button'. The buttons belong to one of two classes (grp1 and grp2). These are my requirements For buttons with class enabled, when the mouse hovers over them, a 'button-hover' class is added to them (i.e. the element the mouse is hovering over). Otherwise, the hover event is ignored When one of the buttons with class grp2 is clicked on (it has to be 'enabled' first), then I disable (i.e. remove the 'enabled' class for all elements with class 'enabled' (should probably selecting for elements with class 'button' AND 'enabled' - but I am having enough problems as it is, so I need to keep things simple for now). This is what my page looks like: <html> <head> <title>Demo</title> <style type="text/css" .button {border: 1px solid gray; color: gray} .enabled {border: 1px solid red; color: red} .button-hover {background-color: blue; } </style> <script type="text/javascript" src="jquery.js"></script> </head> <body> <div class="btn-cntnr"> <span class="grp1 button enabled">button 1</span> <span class="grp2 button enabled">button 2</span> <span class="grp2 button enabled">button 3</span> <span class="grp2 button enabled">button 4</span> </div> <script type="text/javascript"> /* <![CDATA[ */ $(document).ready(function(){ $(".button.enabled").hover(function(){ $(this).toggleClass('button-hover'); }, function() { $(this).toggleClass('button-hover'); }); $('.grp2.enabled').click(function(){ $(".grp2").removeClass('enabled');} }); /* ]]> */ </script> </body> </html> Currently, when a button with class 'grp2' is clicked on, the other elements with class 'grp2' have the 'enabled' class removed (works correctly). HOWEVER, I notice that even though the class no longer have a 'enabled' class, SOMEHOW, the hover behaviour is still applied to these elemets (WRONG). Once an element has been 'disabled', I no longer want it to respond to the hover() event. How may I implement this behavior, and what is wrong with the code above (i.e. why is it not working? (I am still learning jQuery)

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  • Variables variable and inheritance

    - by Xack
    I made code like this: class Object { function __get($name){ if(isset($this->{$name})){ return $this->{$name}; } else { return null; } } function __set($name, $value){ $this->{$name} = $value; } } If I extend this class (I don't want to repeat this code every time), it says "Undefined variable". Is there any way to do it?

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  • Facebook API question - uids and email

    - by Sunil
    Hello Folks, I am trying to develop a application where The user 'X' has logged into Facebook app has a set of email addresses (possible friends of user 'X') app gets the list of friends of user 'X' (uids) Want to check if user with email address [email protected] is a valid facebook user by using email address and is user X's friend (basically a uid to email mapping) Thanks!

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