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How do the likely/unlikely macros in the Linux kernel work and what is their benefit?
I've been digging through some parts of the Linux kernel, and found calls like this:
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How do I copy a folder from remote to local using scp? [closed]
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scp -r user@your.server.example.com:/path/to/foo /home/user/Desktop/
By not including the trailing '/' at the end of foo, you will move the directory itself (including contents), rather than only the contents of the directory.
From man scp (See online manual)
-r Recursively copy entire di...
C++ equivalent of Java's toString?
I'd like to control what is written to a stream, i.e. cout , for an object of a custom class. Is that possible in C++? In Java you could override the toString() method for similar purpose.
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Detach many subdirectories into a new, separate Git repository
This question is based on Detach subdirectory into separate Git repository
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Merge / convert multiple PDF files into one PDF
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Considering that pdfunite is part of poppler it has a higher chance to be installed, usage is also simpler than pdftk:
pdfunite in-1.pdf in-2.pdf in-n.pdf out.pdf
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C++ template constructor
...he template arguments when calling a constructor template, so they have to be deduced through argument deduction. This is because if you say:
Foo<int> f = Foo<int>();
The <int> is the template argument list for the type Foo, not for its constructor. There's nowhere for the con...
Is there any difference between the `:key => “value”` and `key: “value”` hash notations?
Is there any difference between :key => "value" (hashrocket) and key: "value" (Ruby 1.9) notations?
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What is C# analog of C++ std::pair?
...m interested: What is C#'s analog of std::pair in C++? I found System.Web.UI.Pair class, but I'd prefer something template-based.
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How do I convert datetime to ISO 8601 in PHP
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Object Oriented
This is the recommended way.
$datetime = new DateTime('2010-12-30 23:21:46');
echo $datetime->format(DateTime::ATOM); // Updated ISO8601
Procedural
For older versions of PHP, or if you are more comfortabl...
How does Apple find dates, times and addresses in emails?
...OS email client, when an email contains a date, time or location, the text becomes a hyperlink and it is possible to create an appointment or look at a map simply by tapping the link. It not only works for emails in English, but in other languages also. I love this feature and would like to understa...