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Is there a difference between “raise exception()” and “raise exception” without parenthesis?
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How to prevent XSS with HTML/PHP?
...ges output.
Otherwise, use htmlentities($var, ENT_QUOTES | ENT_HTML5, $charset) and make sure the rest of your document uses the same character set as $charset. In most cases, 'UTF-8' is the desired character set.
Also, make sure you escape on output, not on input.
...
Avoid synchronized(this) in Java?
...rned map instance. What’s interesting, is, that the views returned by keySet() and values() don’t lock on (their) this, but the map instance, which is important to get consistent behavior for all map operations. The reason, the lock object is factored out into a variable, is, that the subclass S...
How to print the values of slices
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Why do we need argc while there is always a null at the end of argv?
...uts(argv[i]);
}
return 0;
}
In standard C, with common warnings settings, unused parameter generates warning, which can be fixed by a statement like (void)argc; which causes the name to be used without generating any code.
argc is nice to have, because otherwise many programs would need ...
How do I remove the first characters of a specific column in a table?
...ather than just return doctored results), you can do this:
UPDATE MyTable
SET MyColumn = RIGHT(MyColumn, LEN(MyColumn) - 4)
He's on the right track, but his solution will keep the 4 characters at the start of the string, rather than discarding said 4 characters.
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What does inverse_of do? What SQL does it generate?
...rection. Which improves in performance. From Rails 4.1, inverse_of will be set automatically, if we uses foreign_key or changes in class name we need to set explicitly.
Best article for details and example.
http://viget.com/extend/exploring-the-inverse-of-option-on-rails-model-associations
...
Stream vs Views vs Iterators
...sk for the next element.
Scala used to provide iterators which could be reset, but that is very hard to support in a general manner, and they didn't make version 2.8.0.
Views are meant to be viewed much like a database view. It is a series of transformation which one applies to a collection to pro...
How to identify unused css definitions
...I haven't tested this solution.
Deadweight is a CSS coverage tool. Given a set of stylesheets and a set of URLs, it determines which selectors are actually used and lists which can be "safely" deleted. This tool is a ruby module and will only work with rails website. The unused selectors have to be ...
Disable double-tap “zoom” option in browser on touch devices
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you don't need JS to do that you can just set the CSS attribute pointer-events: none
– Pixelomo
Oct 1 '15 at 16:14
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