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Safely turning a JSON string into an object

...here's how you do it in Prototype (JSON tutorial). new Ajax.Request('/some_url', { method:'get', requestHeaders: {Accept: 'application/json'}, onSuccess: function(transport){ var json = transport.responseText.evalJSON(true); } }); Calling evalJSON() with true as the argument sanitizes...
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unable to install pg gem

... me: Install the postgresql-devel package, this will solve the issue of pg_config missing. sudo apt-get install libpq-dev share | improve this answer | follow ...
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CSS3 transition events

...ent. An event is fired for each property that undergoes a transition. This allows a content developer to perform actions that synchronize with the completion of a transition. Webkit To determine when a transition completes, set a JavaScript event listener function for the DOM event that is s...
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What is an existential type?

...hrough the Wikipedia article Existential types . I gathered that they're called existential types because of the existential operator (∃). I'm not sure what the point of it is, though. What's the difference between ...
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How to wait in a batch script? [duplicate]

...ist on your Windows XP box? According to this post: http://malektips.com/xp_dos_0002.html sleep isn't available on Windows XP, and you have to download the Windows 2003 Resource Kit in order to get it. Chakrit's answer gives you another way to pause, too. Try running sleep 10 from a command prompt...
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Best way for a 'forgot password' implementation? [closed]

... this is essentially the described way of properly resetting a password crackstation.net/hashing-security.htm#faq – TruthOf42 Nov 22 '13 at 13:30 ...
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Switch statement multiple cases in JavaScript

...ement altogether: var cases = { afshin: function() { alert('hey'); }, _default: function() { alert('default'); } }; cases.larry = cases.saeed = cases.afshin; cases[ varName ] ? cases[ varName ]() : cases._default(); s...
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Handling click events on a drawable within an EditText

...lic boolean onTouch(View v, MotionEvent event) { final int DRAWABLE_LEFT = 0; final int DRAWABLE_TOP = 1; final int DRAWABLE_RIGHT = 2; final int DRAWABLE_BOTTOM = 3; if(event.getAction() == MotionEvent.ACTION_UP) { if(event.getRawX() >= (editC...
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Preferred Github workflow for updating a pull request after code review

...pull request and push the branch to GitHub. The pull request will automatically be updated with the additional commit. #2 and #3 are unnecessary. If people want to see only where your branch was merged in (and not the additional commits), they can use git log --first-parent to only view the merge c...
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What is the meaning of “$” sign in JavaScript

...of $ in JavaScript. $ is simply a valid JavaScript identifier. JavaScript allows upper and lower letters, numbers, and $ and _. The $ was intended to be used for machine-generated variables (such as $0001). Prototype, jQuery, and most javascript libraries use the $ as the primary base object (or f...