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• grep with negative lookbehind

  - by Dan Fabulich

  I'm trying to grep through a bunch of files in nested subdirectories to look for regular expression matches; my regex requires negative lookbehind. Perl has negative lookbehind, but as far as I can tell GNU grep doesn't support negative lookbehinds. What's the easiest way to get an equivalent to GNU grep that supports negative lookbehinds? (I guess I could write my own mini-grep in Perl, but that doesn't seem like it should be necessary. My copy of the Perl Cookbook includes source for tcgrep; is that what I should use? If so, where's the latest version? Don't tell me I have to type this entire program!)

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• MIPS (or SPIM): Loading floating point numbers...

  - by James

  Hey hey, I am working on a little mini compiler while trying to learn some MIPS here. Here's my issue: MIPS has an instruction li (load immediate) which would work like this li $5,100 which would load 100 into register 5. However, I need to load floats into registers right now and am struggling with figuring out a way to do it...since li $5,2.5 does not work. Anyone have any advice? I am working in C, I was thinking I could somehow get the integer representation of the float I am working with (i.e. so the floats binary representation == the ints binary representation) then load the "integer" into the register and treat it like a float from then on. Maybe its too late but Im stuck right now.

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• Response.Redirect with a fragment identifier causes unexpected refresh when later using location.has

  - by Matt

  Hi All, I was hoping someone can assist in describing a workaround solution to the following issue I am running into on my ASP.NET website on IE. In the following I will describe the bug and clarify the requirements of the needed solution. Repro Steps: User visits A.aspx A.aspx uses Response.Redirect to bring the user to B.aspx#house On B.aspx#house, the user clicks a button that sets window.location.hash='test' Actual Results: B.aspx is loaded again. The URL now shows B.aspx#test Expected Results: No reload. The URL will just change to B.aspx#test Requirements: Page A must redirect to page B with a fragment identifier in the url Any user action on page B will set the location.hash Setting location.hash must not make page B refresh This must work on IE Notes: Bug only repros on IE (tested on ie6|7|8). Opera, FF, Chrome, Safari all have the expected results of no reload. This error may have nothing to do with ASP.NET, and everything to do with IE For any kind soul willing to have a look at this, I have created a minimal ASP.NET web project to make it easy to repro here

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• Can I use a MIME type declaration to get an HTML file to open in MS Word?

  - by Toph

  Bill James wrote: I was able to render an HTML page with the MIME type set to "application/msword", which caused the browser to spawn Word which imported the html just fine, allowing edits and saving just as if I'd output a real Word doc. That sounds great to me, but I haven't been able to get it to work in any browser (Chrome/FF/Safari/Opera/IE on Win7 running Word 2010 beta). I tried changing the MIME type in the HTTP headers of several pages via Tamper Data to application/msword, and I tried using the http-equiv meta tag <meta http-equiv="Content-type" content="application/msword"> on a local HTML file I tried opening from the browser, but neither appeared to have any effect. I don't really have a clue with regard to HTTP headers and MIME types generally, so - any tips? Many thanks!

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• Creating a user-defined code generation system in PHP

  - by user270766

  My newest project that I'm looking to build with CodeIgniter would require some sort of system that would allow a user to drag and drop pre-defined functions/methods into mini-classes/objects and then run/test them in the browser. So it'd something similar to Scratch. I've designed a relational database that I think could work for this (storing the function names and have these classes "subscribe" to those functions) - but I'm wondering whether or not to go ahead with it. Is there a better way to do this or is there a system out there that would accomplish this for me? EDIT: It would have to be extremely simple for an end user, but hopefully be flexible enough to easily add more complex functionality in the future.

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• Connecting Flash AS2 (or AS3) to BlazeDS

  - by mattstuehler

  All, I'm looking for some information on connecting a Flash (not Flex) application to Blaze DS. (A Google search is surprisingly unhelpful...) Adobe's mini-site about BlazeDS (http://opensource.adobe.com/wiki/display/blazeds/Overview) mentions: Blockquote Welcome to BlazeDS! BlazeDS is the server-based Java remoting and web messaging technology that enables developers to easily connect to back-end distributed data and push data in real-time to Adobe® Flex™ and Adobe AIR™ applications for more responsive rich Internet application (RIA) experiences. ... which notably omits "Flash". Any insights or pointers would be greatly appreciated. Cheers, Matt

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• Check for Block Ads/Scripts (Browser Addons, Compatibility)

  - by acidzombie24

  I'm conflicted. you guys decide if this should migrate to SU or not. I would like to test my site against popular browser ad ons. ATM i have tested against noscript and adblock plus for firefox. What other popular ad ons should i check compatibility with? By compatibility i mean to work as intent on browsers i support (opera, firefox, chrome, IE 7/8) which include ads. NoScript broke my site and for adblock plus i ask once per week to consider allowing ads. When i see IE6 i notify the user the site is known to be unusable with that browser (The site is script heavy by nature and i wouldnt want to accidentally serve ads to infect users of IE6 with a virus).

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• Is there a complete working example of a unit tested JPA2/CDI/JSF2 WebApp without EJBs ?

  - by Maxime ARNSTAMM

  Hello everyone, I want to build a web app in JPA2/CDI (without EJBs) and i get how to code the different beans (i worked for some time on seam/jpa apps), but i'm stuck because i can't find a complete working set of configuration files (ie : persistence.xmln web.xml and stuff), and there is always a little glitch or something i miss. My goal is to develop a simple CRUD (1 or 2 pages) but unit tested, for future use, as a code base. So if you already did this kind of mini project, or if you know where i can find a working example, that would be great if you could help me. Thanks

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• Chrome plugin process - npapi plugin

  - by kambamsu

  Hi, I'm writing an npapi plugin in Qt. My plugin works perfectly on firefox and opera. The problem in chrome i guess is regarding the "process-per-plugin" setup. What happens is, when i first open a page, the plugin is injected and all works as per expected. But when i navigate from that page to another one, in the new page, the plugin seems to get injected but even its constructor isnt called. To examine the issue, I tried killing my plugin process via the chrome task manager before i navigate to the new page. When i do this, the plugin works as expected in the 2nd page too. I'm unable to comprehend what is happening here. Any help would be appreciated. Thanks

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• Java: Read POST data from a socket on an HTTP server

  - by danpalmer

  I have a website (python/django) that needs to use a load of Java resources that may or may not be on the same server. Therefore I am writing a mini webserver in Java that will receive a request and then when processing is finished, POST some data back to a url on the site. I have got the java code receiving connections on sockets and responding with some simple HTML. My problem is that I will POST data to the Java server and that code needs to act on the data. How do I go about reading the data that is posted in the HTML request, if it is even possible. If not, is there any other way you would do this. If you think I am going about this in completely the wrong way then please tell me and I will consider another method, but after conversing with some Java developers, this seemed like the best way for what I was doing. Thanks

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• Flash under dhtml menu

  - by David

  I'm struggling with this probelm for few hours and it's drives me crazy. I want my drop down menu put over flash area and it works but only in FF. Unfotunelly IE and Opera shows my menu under flash. The DHTML menu system is the simplest as possible and it was wrote from scratch by me. I've been trying everything, and still it doesn't work like it should. I tried to put the flash element by jquery.flashEmbed script and by standard code with param transparent, but it never works. Plese help me, I'm loosing my head. Here is the xhtml: http://www.project.yamandi.com/toton/ Regards, David

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• Nested attributes in the index view?

  - by user283179

  How would I show one of many nested objects in the index view class Album < ActiveRecord::Base has_many: photos accepts_nested_attributes_for :photos, :reject_if => proc { |a| a.all? { |k, v| v.blank?} } has_one: cover accepts_nested_attributes_for :cover end class Album Controller < ApplicationController layout "mini" def index @albums = Album.find(:all, :include => [:cover,]).reverse respond_to do |format| format.html # index.html.erb format.xml { render :xml => @albums } end end This is what I have so fare. I just want to show a cover for each album. Any info on this would be a massive help!!

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• Remote iPhone / xCode application development?

  - by ANE

  4 java developers are new to iPod Touch/iPhone app development. They have an idea for an app. They have never used Xcode or Macs before. Instead of spending money for a new iMac or Mac Mini for each of them, my boss would like to sell them a $999 Apple server, hosted at a facility connected a single T1 line, and have all 4 people work remotely in Xcode. Is this feasible? Is anyone doing anything like this? Specifically, is 1 T1 enough for realistic remote app development? Would they have to work in black & white via Logmein or Gotomeeting to get decent speed? Can four people work remotely together on an Xcode project at the same time? Do they absolutely need their own Macs to connect their iPod Touches or iPhones physically to, or can they connect to their existing PCs with iTunes and install their in-development apps that way?

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• Any way to remove IEs black border around submit button in active forms?

  - by Magnar

  I am implementing a design that uses custom styled submit-buttons. They are quite simply light grey buttons with a slightly darker outer border: input.button { background: #eee; border: 1px solid #ccc; } This looks just right in Firefox, Safari and Opera. The problem is with Internet Explorer, both 6 and 7. Since the form is the first one on the page, it's counted as the main form - and thus active from the get go. The first submit button in the active form receives a solid black border in IE, to mark it as the main action. If I turn off borders, then the black extra border in IE goes away too. I am looking for a way to keep my normal borders, but remove the outline.

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• Documenting user scenarios and measuring/testing

  - by Rimian

  Please forgive me as I don't quite remember the exact terms for what I am talking about... hence my question. Recently I worked on a large Agile team where I encountered a method of defining user scenarios (much like user stories). These scenarios were a few very basic short sentences with keywords and a structure that could be understood by humans (especially project managers) and could also be coded against using some Java Framework (for verifying tests). The exact structure of this mini language used keywords like "when" and "and" or "if" which was how the framework parsed and verified the result. The purpose of this framework was to interface between management and the acceptance testing framework. So essentially management could write the tests themselves using English. The scenario went something like this: "When a user visits URL and User clicks on X Something happens (that can be measured)" Can anyone help me remember exactly what I am talking about? Many thanks

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• How to callback the new list id jQuery UI: sortable

  - by PARyGuy

  Hi, I'm trying to use the sortable widget for my site. I have a mini scheduling app that I'd like to display a list of appointments for the week sorted by days. For this example we'll use only two days ( 2 lists ). If I wanted to drag an appointment (list item) from day 2 over to day 1, is there a way I can callback the id of list 1 after I dragged an item to it? I can find the id of the parent list upon page load but I can't seem to be able to pull the new id after sort. Is this even possible? <script type="text/javascript"> $(function() { $("#day1, #day2").sortable({ connectWith: '.sortable' }).disableSelection(); }); </script>

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• Why Do Browsers Leak Memory?

  - by Dane Balia

  A colleague and I were speaking about browsers (using browser control in a project), and it appears as plain as day that all browsers (Firefox, Chrome, IE, Opera) display the same characteristic or side-effect from their usage and that being 'Leaking Memory'. Can someone explain why that is the case? Surely as with any form of code, there should be proper garbage collection? PS. I've read about some defensive patterns on why this can happen from a developer's perspective. I am aware of an article Crockford wrote on IE; but why is the problem symptomatic of every browser? Thanks

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• Firefox session cookies

  - by meandmycode

  Generally speaking, when given a cookie that has no expiration period, modern browsers will consider this cookie to be a 'session cookie', they will remove the cookie at the end of the browsing session (generally when the browser instance closes). IE, Opera, Safari and Chrome all support this behavior. However firefox (3.0.9 latest proper release) appears not to follow this rule, from what I can tell it doesn't expire the cookies when the browser is closed, or when the user logs off or restarts the OS.. So, why does firefox refer to these as session cookies, when they last aparently indefinitely? Does anyone know how Firefox handles session cookie expiration?

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• jTabbedPane opens different tab on loading

  - by Santeron

  Hey mates, First of all I'm using netbeans as my IDE and I don't know if this is causing it. When I run my program (even if I have build it and run the .jar) I think it selects the tab that was previously selected (before quiting). So if for example I close the app with the third tab selected, it starts up with that selected again. Is there a known solution for this? The selectedIndex property on the jTabbedPane is set to 0. Shouldn't this property be the default onLoad value? Thx in advance, Jimmy PS. BTW for some reason it didn't submit my question in Opera (?)

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• br line-height in safari and chrome leaving gap

  - by Mike

  In my HTML I have a div and inside the div I have different vertical spacing between lines of text. I achieve this by using breaks and defining the height, i.e. <br /><br class="height5" /> or height2 or height10 or whatever. In my stylesheet I define it like: br.height2 {line-height:2px;} br.height5 {line-height:5px;} This is working in IE6+ FF2+ and Opera but for some reason there are huge gaps in Safari and Chrome (like those two browsers are ignoring it and just applying regular breaks). I tried testing with larger line-heights like 20px or 30px and Safari and Chrome recognize those. They seem to be ignoring anything under 5-10 pixels. Help? Thanks!

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• ASP.NET MVC Rich Text Editor not showing buttons

  - by Bibo

  Hi, I have problem with implementing Rich Text Editor (all that i tried, e.g. TinyMCE). I tried many tutorials and articles but all same. When i am trying do it the best what i get is working editor in IE (8) but other browser not (Opera, FF, Chrome). Samples that i download work fine in all browsers. I am using VS2010 ASP.NET MVC2 and e.g. i tried this http://www.billsternberger.net/asp-net-mvc/tinymce-samples-with-asp-net-mvc/ Thanks for help

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• asp.net rangevalidator for calendar extender entries gives problems in safari

  - by Robin Baralla

  Hi there, I have the following scenario: arrival and departure dates have to be selected on a form, through 2 textboxes with a calendar extender each. I validate the entries to check that no date before today is selected and to check that the departure is after the arrival. I used a rangevalidator and a comparevalidator. In IE, Firefox and Opera it is working fine, in Safari (on windows) however both the validators go off even on entries that should be accepted. It makes me suspect that the date format dd/MM/yyyy causes trouble for Safari. (the dd/MMMM/yyyy also gave the same troubles in the other browsers, probably due to the dependency on UIculture) The code is:   The range validator gets its values in code behind on Page_load RangeValidator1.MinimumValue = DateTime.Now.AddDays(1).ToShortDateString(); RangeValidator1.MaximumValue = DateTime.Now.AddMonths(12).ToShortDateString(); Does anybody have any suggestions on how to solve this problem with safari? best regards, Robin

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• jQuery ajax callback function not working

  - by Harish Kurup

  I am using Symfony PHP Framework to create web application, and using symfony Forms to create the HTML forms. I am trying to load the data in Select element using Ajax, for that i am using jQuery's Ajax functions. It is working fine as it sends and gets the response correctly(status as 200), but not calling the Callback function in some browsers such as IE,Chrome and Safari.It works fine in Firefox and Opera. the Code that is not working, $.ajax({ type: 'POST', url: 'form/ajax', async: true, cache: false, dataType : 'json', data: 'id='+ids, success: function(jsonData){ alert("ok go"); } }); the alert "OK Go" is not called in Chrome,IE and Safari But $.ajax({ type: 'POST', url: 'form/ajax', async: true, cache: false, dataType : 'json', data: 'id='+ids, success: alert("ok go"); }); this works, but as per the project i want the JSON data to load in my Select element. is there any thing wrong in the return JSON format or the bug in the jQuery Ajax functions, please help.

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• Is this a cache problem? (JQUERY)

  - by Scarface

  Hey guys quick question. I have this code that brings in data from a php script and it works fine some of the time. However, once in a while the information will not appear at all in opera if I keep refreshing. About Is every 3 refreshes. It seems to be fine in firefox. Is this a cache problem and can it be fixed? Thanks in advance for any assistance. $.getJSON(files+"comments.php?action=view&load=initial&topic_id="+topic_id+"&t=" + (new Date()), function(json) { if(json.length) { for(i=0; i < json.length; i++) { $('#comment-list').prepend(prepare(json[i])); $('#list-' + count).fadeIn(1500); } } });

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• How can I disable Ctrl+A (select all) using jquery in a browser?

  - by Keltex

  I'm trying to prevent information to be copied from a page (for non-technical users of course). I know how to disable selecting text using the mouse. The following jquery code works: $(function(){ $.extend($.fn.disableTextSelect = function() { return this.each(function(){ if($.browser.mozilla){//Firefox $(this).css('MozUserSelect','none'); }else if($.browser.msie){//IE $(this).bind('selectstart',function(){return false;}); }else{//Opera, etc. $(this).mousedown(function(){return false;}); }); }); $('.noSelect').disableTextSelect(); }); But users can still use Ctrl+A to select the entire page. Any workarounds for this?

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