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Fastest way to check if a string matches a regexp in ruby?
...erformed by other methods such as Regexp#match and =~:
Regexp#match?
Added Regexp#match?, which executes a regexp match without creating a back reference object and changing $~ to reduce object allocation.
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If a DOM Element is removed, are its listeners also removed from memory?
...a = document.createElement('div');
var b = document.createElement('p');
// Add event listeners to b etc...
a.appendChild(b);
a.removeChild(b);
b = null;
// A reference to 'b' no longer exists
// Therefore the element and any event listeners attached to it are removed.
However; if there are refer...
Complex CSS selector for parent of active child [duplicate]
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Dave WardDave Ward
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How to wait for a number of threads to complete?
What is a way to simply wait for all threaded process to finish? For example, let's say I have:
13 Answers
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In Django - Model Inheritance - Does it allow you to override a parent model's attribute?
...ength=255)
food_type = models.CharField(max_length=25)
Please also read @Mark answer, he gives a great explanation why you can't change attributes inherited from a non-abstract class.
(Note this is only possible since Django 1.10: before Django 1.10, modifying an attribute inherited from an a...
send/post xml file using curl command line
...r:pass@myhost:myport/path/of/url
You need to change it a little bit to read from a file:
$ curl -X POST -d @myfilename http://user:pass@myhost:myport/path/of/url
Read the manpage. following an abstract for -d Parameter.
-d/--data
(HTTP) Sends the specified data in a
POST request to...
Image inside div has extra space below the image
... the img ? There is a gap below the image, but it doesn't seems to be a padding/margin.
9 Answers
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SQL Developer is returning only the date, not the time. How do I fix this?
...edited Dec 2 '13 at 12:45
Muhammad Ramahy
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answered Sep 27 '12 at 19:13
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What does `m_` variable prefix mean?
...e where they're defined to know their scope. This is also great if you already know the scope and you're using something like intelliSense, you can start with m_ and a list of all your member variables are shown. Part of Hungarian notation, see the part about scope in the examples here.
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Build .so file from .c file using gcc command line
...IC hello.c
to do it in one step. – Jonathan Leffler
I also suggest to add -Wall to get all warnings, and -g to get debugging information, to your gcc commands. – Basile Starynkevitch
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