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How to check if a value exists in an array in Ruby
...ED_METHODS = Set[:to_s, :to_i, :upcase, :downcase
# etc
]
def foo(what)
raise "Not allowed" unless ALLOWED_METHODS.include?(what.to_sym)
bar.send(what)
end
A quick test reveals that calling include? on a 10 element Set is about 3.5x faster than cal...
Allow user to set up an SSH tunnel, but nothing else
...only may be tunneling, without an interactive shell, to set that shell in /etc/passwd to /usr/bin/tunnel_shell.
Just create the executable file /usr/bin/tunnel_shell with an infinite loop.
#!/bin/bash
trap '' 2 20 24
clear
echo -e "\r\n\033[32mSSH tunnel started, shell disabled by the system admin...
In Git, how can I write the current commit hash to a file in the same commit
...$Id$ upon check-in.
If you think about it, this is what CVS, Subversion, etc do as well. If you look at the repository, you'll see that the file in the repository always contains, for example, $Id$. It never contains the expansion of that. It's only on checkout that the text is expanded.
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How to apply an XSLT Stylesheet in C#
...re able to set XmlReaderSettings and XmlWriterSettings using DTD, Schemas, etc.
– Alina B.
Oct 11 '14 at 6:09
2
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Why doesn't requests.get() return? What is the default timeout that requests.get() uses?
...aiohttp.ClientSession(timeout=timeout) as client:
try:
etc.
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What is this weird colon-member (“ : ”) syntax in the constructor?
...or<double> emptyVec(0);, std::vector<double> fullVec(10,23.);, etc. Only with the type removed, of course, because the type is in the member declaration.
– Steve Jessop
Nov 11 '09 at 1:03
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Is there a NumPy function to return the first index of something in an array?
...on any array, and will return a tuple of length 3 when used on a 3D array, etc.
– P. Camilleri
Jul 5 '17 at 7:52
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Convert JS Object to form data
... any of those. The reason you sometimes see hasOwnProperty used in plugins etc. is because you never know what some people might do to the Object constructor, but for the most part people shouldn't have to test for inherited properties on objects they've created, that's a sign that you're probably d...
In Python, how can you load YAML mappings as OrderedDicts?
... is derivative of the safe parser/dumper that knows about CommentedMap/Seq etc.
– Anthon
Jul 15 at 8:38
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Should we pass a shared_ptr by reference or by value?
...n't that be taken into account as well (at least for constructor arguments etc where a the shared_ptr is going to be made a member of the class)?
– stijn
Jan 8 '13 at 11:12
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