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Why is lock(this) {…} bad?

... It is bad form to use this in lock statements because it is generally out of your control who else might be locking on that object. In order to properly plan parallel operations, special care should be taken to consider possible deadlock situations, and having an unknown number of lock en...
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JavaScript null check

... @bfavaretto: Yep, so it might actually be a typo. But you never know… :D – Ry-♦ May 21 '13 at 14:42 ...
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Can I set the height of a div based on a percentage-based width? [duplicate]

... scale with the browser window on resize, move the code to a function and call it on the window resize event. Here's a demonstration of that too (view example full screen and resize browser window): $(window).ready(updateHeight); $(window).resize(updateHeight); function updateHeight() { ...
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PHP + MySQL transactions examples

I really haven't found normal example of PHP file where MySQL transactions are being used. Can you show me simple example of that? ...
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Dot character '.' in MVC Web API 2 for request such as api/people/STAFF.45287

... http://somedomain.com/api/people/staff.33311 (just like sites as LAST.FM allow all sort of signs in their RESTFul & WebPage urls, for example " http://www.last.fm/artist/psy'aviah " is a valid url for LAST.FM). ...
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How do I kill background processes / jobs when my shell script exits?

... but can also be used to execute something if the shell exits: trap "killall background" EXIT It's a builtin, so help trap will give you information (works with bash). If you only want to kill background jobs, you can do trap 'kill $(jobs -p)' EXIT Watch out to use single ', to prevent the sh...
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Set value of hidden field in a form using jQuery's “.val()” doesn't work

... Andy, thanks for the quick response. I actually tried with the "#texens" first, and then with "#input:hidden#texens" and neither of them seemed to work. When I changed the input type in the form from "hidden" to "text", and "#input:hidden:texens" to "#input:text:tex...
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Find and extract a number from a string

... NOTE: If the string contains multiple numbers, this answer will run them all together into a single number. E.g. "a12bcd345" results in "12345". (Which may be desirable or not, depending on the goal.) This is different than the top-voted Regex solution, which would return "12" for the case above. ...
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How to hide image broken Icon using only CSS/HTML?

...yle.display='none'"/> or <img src="Error.src" onerror="this.src='fallback-img.jpg'"/> Update You can apply this logic to multiple images at once by doing something like this: document.addEventListener("DOMContentLoaded", function(event) { document.querySelectorAll('img').forE...
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How much does it cost to develop an iPhone application? [closed]

...Remember also that we were reusing a bunch existing code: I'm going to lowball the value of that code at $35,000 giving a total development cost of $200,000. Anyone who's done serious iPhone development can tell you there's a lot of design work involved with any project. We had two designers workin...