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What are Vertex Array Objects?

...; //vertf buf is a floatbuffer of vertices At this point OpenGL Sees: Now we can use glVertexAttribPointer to tell OpenGL what the data in the buffer represents: glBindBuffer(GL_ARRAY_BUFFER, 0); //bind VBO at 0 glVertexAttribPointer(0, 3, GL_FLOAT, false, 0, 0); //each vertex has 3 components...
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How to check a not-defined variable in JavaScript

...-assignable was fixed in ECMAScript 5, which was released in 2009. You can now safely use === and !== to test for undefined without using typeof as undefined has been read-only for some time. If you want to know if a member exists independent but don't care what its value is: if ('membername' in o...
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Is gcc 4.8 or earlier buggy about regular expressions?

...the implementation. Most parts of the library were more complete and are now almost fully implemented, but <regex> hadn't been, so it stayed in the same unfinished state since it was added. Seriously though, who though that shipping an implementation of regex_search that only does "retur...
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How to clear gradle cache?

... EDIT: cleanBuildCache no longer works android gradle plugin now utilizes gradle cache feature REF: https://guides.gradle.org/using-build-cache/ TO CLEAR CACHE Clean the cache directory to avoid any hits from previous builds rm -rf $GRADLE_HOME/caches/build-cache-* RE...
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How to check for valid email address? [duplicate]

...g it even a little tighter. Seems safe to limit TLD to alphanumeric right now (still haven't seen a TLD that has non-ASCII chars). Using this now: re.compile(r"[^@\s]+@[^@\s]+\.[a-zA-Z0-9]+$") – gaefan Aug 29 '15 at 15:39 ...
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Pad a number with leading zeros in JavaScript [duplicate]

...(str.length < length) str = padString + str; return str; } Now test: var str = "5"; alert(str.lpad("0", 4)); //result "0005" var str = "10"; // note this is string type alert(str.lpad("0", 4)); //result "0010" DEMO In ECMAScript 8 , we have new method padStart and padEnd which ha...
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JavaScript module pattern with example [closed]

...on expression. Here are using function expression. What is namespace? Now if we add the namespace to the above piece of code then var anoyn = (function() { }()); What is closure in JS? It means if we declare any function with any variable scope/inside another function (in JS we can declare...
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How does the extend() function work in jQuery?

...d to the first object / first parameter Ex: $.extend(object1, object2); Now object1 contains properties of object2 If we want to merge two objects, then we need to pass empty object in the first parameter Ex: var newObject = $.extend({}, object1, object2); Now newObject contains both properti...
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How to disable anchor “jump” when loading a page?

... delete hash so the page won't scroll to it window.location.hash = ""; // now whenever you are ready do whatever you want // (in this case I use jQuery to scroll to the tag after the page has loaded) $(window).on('load', function() { if (target) { $('html, body').animate({ s...
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How to avoid mysql 'Deadlock found when trying to get lock; try restarting transaction'

...each connection will wait for the other to release the key -> deadlock. Now, if you changed your queries such that the connections would lock the keys at the same order, ie: connection 1: locks key(1), locks key(2); connection 2: locks key(1), locks key(2); it will be impossible to get a deadlo...