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Wait for a process to finish
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tail works under the hood by polling with kill(pid, SIG_0) to a process (discovered using strace).
– Att Righ
Nov 21 '17 at 1:47
2
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How to initialize static variables
...xample: class Foo {public static $bar = array(3 * 4, "b" => 7 + 8);} var_dump(Foo::$bar);
– Pang
May 8 '15 at 2:29
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How do I read image data from a URL in Python?
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HELP, IOError: cannot identify image file <_io.BytesIO object at 0x7fb91b6a29b0> my url is: ...model=product.template&id=16&field=image_medium
– С. Дэлгэрцэцэг
Sep 3 '18 at 12:43
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CSS3 Rotate Animation
...ery plugin because I was all like, "I didn't know jQuery could do that!!! ^_^ looks at fiddle Oh wait... U_U"
– Just Plain High
Apr 5 '14 at 10:04
2
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How do I handle too long index names in a Ruby on Rails ActiveRecord migration?
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Provide the :name option to add_index, e.g.:
add_index :studies,
["user_id", "university_id", "subject_name_id", "subject_type_id"],
:unique => true,
:name => 'my_index'
If using the :index option on references in a create_table block, it t...
What does T&& (double ampersand) mean in C++11?
...his factory function:
template <typename T, typename A1>
std::unique_ptr<T> factory(A1& a1)
{
return std::unique_ptr<T>(new T(a1));
}
If we called factory<foo>(5), the argument will be deduced to be int&, which will not bind to a literal 5, even if foo's constr...
Differences between Perl and PHP [closed]
...d slices are assignable, which has all sorts of uses. In PHP, you use array_slice to extract a slice and array_splice to assign to a slice.
You can leave out the argument to the subscript operator in PHP for a bit of magic. In Perl, you can't leave out the subscript.
Perl hashes are unordered.
Perl ...
Android: how to check if a View inside of ScrollView is visible?
...it is always returning false. Please let me know
– KK_07k11A0585
Jun 15 '15 at 14:57
2
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Add up a column of numbers at the Unix shell
...filenames. here is a perl one-liner instead.
perl -nle 'chomp; $x+=(stat($_))[7]; END{print $x}' files.txt
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View a list of recent documents in Vim
...bro ol" is an abbreviation of ":browse oldfiles"
– Mr_Chimp
Sep 22 '11 at 16:04
28
To open one of...