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Ruby: extend self
...methods? Why would you do it this way rather than specifying class methods from the beginning?
5 Answers
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PostgreSQL disable more output
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That stops it from using a pager but it doesn't stop the output, no? I'm guessing you'd need PAGER="/dev/null" psql db -P pager=always -f sql.sql to make it always kill output.
– Harald Brinkhof
Jun 2...
How to check that an element is in a std::set?
...his works with more containers but requires std::begin and std::end
// from C++0x, which you can get either:
// 1. By using a C++0x compiler or
// 2. Including the utility functions below.
return contains(std::begin(container), std::end(container), value);
// This works pre-C+...
Why '&&' and not '&'?
... false and the evaluation of the rest (op.CanExecute()) is skipped.
Apart from this, technically, they are different, too:
&& and || can only be used on bool whereas & and | can be used on any integral type (bool, int, long, sbyte, ...), because they are bitwise operators. & is the ...
Can I publish a private NuGet package?
...e LDAP for authentication, and the ability to filter feeds by name/license from connected feeds (i.e. NuGet's official feed).
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PermGen elimination in JDK 8
...part of JDK Enhancement Proposals 122:
Remove the permanent generation from the Hotspot JVM and thus the need to tune the size of the permanent generation.
The list of all the JEPs that will be included in Java 8 can be found on the JDK8 milestones page.
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How to sort an array based on the length of each element?
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this would sort from low length to higher length
– Miguel
Nov 24 '16 at 16:08
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One line if-condition-assignment
...s must have a clearly defined return value in all cases. This is different from usage as in, say, Ruby or Perl.
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diff current working copy of a file with another branch's committed copy
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Did you try with a -- in order to separate parameters from path arguments? git diff -- master:foo foo
– VonC
Feb 2 '12 at 16:13
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Converting a double to an int in C#
...5.5 is converted to 6.
...while the cast truncates:
When you convert from a double or float value to an integral type, the
value is truncated.
Update: See Jeppe Stig Nielsen's comment below for additional differences (which however do not come into play if score is a real number as is the ...