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How to check if std::map contains a key without doing insert?
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310
Use my_map.count( key ); it can only return 0 or 1, which is essentially the Boolean result you...
Check that Field Exists with MongoDB
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188
Use $ne (for "not equal")
db.collection.find({ "fieldToCheck": { $exists: true, $ne: null } }...
How can I specify working directory for popen
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1 Answer
1
Active
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iPhone - Get Position of UIView within entire UIWindow
...e this:
[aView.superview convertPoint:aView.frame.origin toView:nil];
2014 Edit: Looking at the popularity of Matt__C's comment it seems reasonable to point out that the coordinates...
don't change when rotating the device.
always have their origin in the top left corner of the unrotated screen...
format date with moment.js
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613
The 2nd argument to moment() is a parsing format rather than an display format.
For that, you ...
Scroll Automatically to the Bottom of the Page
...additional sources you can take a look at:
http://www.sourcetricks.com/2010/07/javascript-scroll-to-bottom-of-page.html
http://www.alecjacobson.com/weblog/?p=753
http://www.mediacollege.com/internet/javascript/page/scroll.html
http://www.electrictoolbox.com/jquery-scroll-bottom/
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Any difference between First Class Function and High Order Function
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155
There is a difference. When you say that a language has first-class functions, it means that t...
How do I copy the contents of one stream to another?
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13 Answers
13
Active
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Creating Threads in python
...tion(arg):
for i in range(arg):
print("running")
sleep(1)
if __name__ == "__main__":
thread = Thread(target = threaded_function, args = (10, ))
thread.start()
thread.join()
print("thread finished...exiting")
Here I show how to use the threading module to creat...
Instantiating object of type parameter
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edited Jun 1 '17 at 15:55
answered Nov 18 '08 at 20:24
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