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What's the safest way to iterate through the keys of a Perl hash?
...may work for some data sets but will fail for others depending on the hash order.
As already noted, it is safe to delete the last key returned by each. This is not true for keys as each is an iterator while keys returns a list.
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Count the items from a IEnumerable without iterating?
...as other responders say, being completely ignorant and always iterating in order to count elements.
In many cases where the programmer is just checking if( enumerable.Count != 0 ) using the Any() extension method, as in if( enumerable.Any() ) is far more efficient with linq's lazy evaluation as it...
Check if an image is loaded (no errors) with jQuery
...pt with the jQuery library to manipulate image thumbnails contained in a unordered list. When the image is loaded it does one thing, when an error occurs it does something else. I'm using jQuery load() and error() methods as events. After these events I check the image DOM element for the .comp...
How do I make Vim do normal (Bash-like) tab completion for file names?
...ide a list with the same elements, and they may just appear in a different order.
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Cached, PHP generated Thumbnails load slowly
... cool tool cuzillion that could help you sort out things depending on your ordering of ressource loading.
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Split string to equal length substrings in Java
...egex, while requiring a few extra lines of code, will run somewhere on the order of 5x faster...
– drew moore
Sep 23 '14 at 14:17
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How to implement onBackPressed() in Fragments?
...us answer.
If I were to do this today, I'd use a broadcast, or possibly a ordered broadcast if I expected other panels to update in unison to the master/main content panel.
LocalBroadcastManager in the Support Library can help with this, and you just send the broadcast in onBackPressed and subscri...
How to set date format in HTML date input tag?
... real world. Some browsers, like Chrome and Opera, do at least respect the order of entities, though nothing more than that. For example, my OS locale settings specify that as a short date, the first day of August this year should be 1/8-2016, but even Chrome and Opera show 01/08/2016. Other browser...
Can Visual Studio 2012 be installed side-by-side w/ Visual Studio 2010?
...find my bugs in the first five minutes or not. I test on my own machine in order to reduce embarrassment. It's the automated unit tests in the builds, and the real tests by QA that determine whether or not my code ships to customers. Those tests will include tests in an environment like that of the ...
How do I pass multiple parameters into a function in PowerShell?
...hus, one can call a function with space-separated positional parameters or order-independent named parameters. The other pitfalls reveal that you need to be cognizant of commas, parentheses, and white space.
For further reading, see my article Down the Rabbit Hole: A Study in PowerShell Pipelines, ...