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What is the difference between a port and a socket?

...because a connection is identified by both its local and remote endpoints, allowing traffic to be routed to a specific service instance. There can only be one listener socket for a given address/port combination. Exposition This was an interesting question that forced me to re-examine a number of...
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How to get error message when ifstream open fails

... Every system call that fails update the errno value. Thus, you can have more information about what happens when a ifstream open fails by using something like : cerr << "Error: " << strerror(errno); However, since every s...
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Differences between numpy.random and random.random in Python

...of much higher quality than is available from random.random alone. You usually don't need this, though. – SingleNegationElimination Aug 11 '11 at 18:36 ...
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Graphviz: How to go from .dot to a graph?

...neato and twopi. If graphiz isn't in your path, figure out where it is installed and run it from there. You can change the output format by varying the value after -T and choosing an appropriate filename extension after -o. If you're using windows, check out the installed tool called GVEdit, it ma...
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Extracting extension from filename in Python

... @klingt.net Well, in that case, .asd is really the extension!! If you think about it, foo.tar.gz is a gzip-compressed file (.gz) which happens to be a tar file (.tar). But it is a gzip file in first place. I wouldn't expect it to return the dual extension at all. ...
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CSS3 transition events

...ent. An event is fired for each property that undergoes a transition. This allows a content developer to perform actions that synchronize with the completion of a transition. Webkit To determine when a transition completes, set a JavaScript event listener function for the DOM event that is s...
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Is there a download function in jsFiddle?

...e site that shows the results. And then when you save it as a file. It is all in one HTML-file. For example: http://jsfiddle.net/Ua8Cv/show/ for the site http://jsfiddle.net/Ua8Cv share | improv...
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Why is UICollectionViewCell's outlet nil?

...I don't use it, it gives me error Assertion failure in -[UICollectionView _dequeueReusableViewOfKind:withIdentifier:forIndexPath:viewCategory:] – Shaheera Jun 30 '16 at 11:04 ...
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Is the order of iterating through std::map known (and guaranteed by the standard)?

... Yes, that's guaranteed. Moreover, *begin() gives you the smallest and *rbegin() the largest element, as determined by the comparison operator, and two key values a and b for which the expression !compare(a,b) && !compare(b,a) is true are considered equal. The default comparis...
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Python Selenium accessing HTML source

... What if we need to get page source after all the javascript executes.? – Yogeesh Seralathan Jun 13 '14 at 5:58 4 ...