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Designing function f(f(n)) == -n
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I can't believe I had to read this far down to find a good procedural solution that handles negative numbers without resorting to global variables or tricks that obfuscate the code. If I could vote you up more than once, I would.
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What is the difference between 'my' and 'our' in Perl?
... used for local variables, whereas our is used for global variables.
More reading over at Variable Scoping in Perl: the basics.
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How to run a command before a Bash script exits?
...p [-lp] [[arg] sigspec ...]
The command arg is to be read and executed when the shell
receives signal(s) sigspec.
So, as indicated in Anon.'s answer, call trap early in the script to set up the handler you desire on ERR.
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WebForms UnobtrusiveValidationMode requires a ScriptResourceMapping for 'jquery'. Please add a Scrip
... am using <script type='text/javascript'> //<![CDATA[ $(document).ready(function () { $("#menu").menu(); }) //]] </script>. Is this the correct approach?
– Yashman Gupta
Oct 8 '14 at 14:04
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Which Java Collection should I use?
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This flow chart does not try and cover things like synchronized access, thread safety etc or the legacy collections, but it does cover the 3 standard Sets, 3 standard Maps and 2 standard Lists.
This image was created for this answer and is licensed under a Creative Commons Attribution 4.0 Intern...
What special characters must be escaped in regular expressions?
... to be escaped, so escaping literal colons only makes your regex harder to read.
– Jan Goyvaerts
Jun 9 '15 at 7:52
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How to timeout a thread
I want to run a thread for some fixed amount of time. If it is not completed within that time, I want to either kill it, throw some exception, or handle it in some way. How can it be done?
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How do I merge changes to a single file, rather than merging commits?
...merge just file f of branch B into file f of branch A.
A simple command already solved the problem for me if I assume that all changes are committed in both branches A and B:
git checkout A
git checkout --patch B f
The first command switches into branch A, into where I want to merge B's version...
Go naming conventions for const
...eason, I stick to lowerCamelCase for private const variables, and I recall reading this recommendation from someone relatively close to the Go project (or perhaps even in official documentation--I forget where).
– weberc2
Aug 7 '14 at 14:01
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What is the role of src and dist folders?
...e before minification or concatenation or some other compilation - used to read/edit the code.
dist/ stands for distribution, and is the minified/concatenated version - actually used on production sites.
This is a common task that is done for assets on the web to make them smaller.
You can see an...