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Why does ConcurrentHashMap prevent null keys and values?
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BrunoBruno
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Why do people still use primitive types in Java?
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400
In Joshua Bloch's Effective Java, Item 5: "Avoid creating unnecessary objects", he posts the fo...
Difference between sh and bash
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1209
What is sh
sh (or the Shell Command Language) is a programming language described by the POSIX...
Evaluate expression given as a string
...o change the string into an expression:
> eval(parse(text="5+5"))
[1] 10
> class("5+5")
[1] "character"
> class(parse(text="5+5"))
[1] "expression"
Calling eval() invokes many behaviours, some are not immediately obvious:
> class(eval(parse(text="5+5")))
[1] "numeric"
> class(eval...
Prevent nginx 504 Gateway timeout using PHP set_time_limit()
I am getting 504 timeouts message from nginx when my PHP script is running longer than usual. set_time_limit(0) does not seem to prevent that! Does it not work when running php5-fpm on nginx? If so, whats the proper way of setting the time limit?
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When to use DataContract and DataMember attributes?
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Ross Presser
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answered Jan 29 '11 at 12:18
marc_smarc_s
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Select all elements with “data-” attribute without using jQuery
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440
You can use querySelectorAll:
document.querySelectorAll('[data-foo]');
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How can an html element fill out 100% of the remaining screen height, using css only?
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The trick to this is specifying 100% height on the html and body elements.
Some browsers look to the parent elements (html, body) to calculate the height.
<html>
<body>
<div id="Header">
</div>
<div id...
How can I get my Twitter Bootstrap buttons to right align?
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707
Insert pull-right into the class attribute and let bootstrap arrange the buttons.
For Bootstra...