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When is TCP option SO_LINGER (0) required?
...void large numbers of connections sitting in the TIME_WAIT state, tying up all the available resources on a server.
When a TCP connection is closed cleanly, the end that initiated the close ("active close") ends up with the connection sitting in TIME_WAIT for several minutes. So if your protocol i...
presentViewController:animated:YES view will not appear until user taps again
...ith presentViewController:animated:completion . What I'm making is essentially a guessing game.
8 Answers
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Add list to set?
... hashable objects. The objects have to be hashable so that finding, adding and removing elements can be done faster than looking at each individual element every time you perform these operations. The specific algorithms used are explained in the Wikipedia article. Pythons hashing algorithms are exp...
How is pattern matching in Scala implemented at the bytecode level?
...atterns like or patterns and combinations like "case Foo(45, x)", but generally those are just logical extensions of what I just described. Patterns can also have guards, which are additional constraints on the predicates. There are also cases where the compiler can optimize pattern matching, e.g...
R: rJava package install failing
When installing rJava using the install.packages("rJava") command I get the following error:
16 Answers
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Returning http status code from Web Api controller
...using an exception to communicate the most common case of NotModified is really wasteful. If all your APIs did this, then your server will be mostly converting watts to exceptions.
– Luke Puplett
Nov 28 '13 at 9:51
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WPF and initial focus
...ew TraversalRequest(FocusNavigationDirection.First));
This will automatically select the first control in the tab order, so it's a general solution that should be able to be dropped into any window and Just Work.
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How do I move files in node.js?
How can I move files (like mv command shell) on node.js? Is there any method for that or should I read a file, write to a new file and remove older file?
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Ignoring an already checked-in directory's contents?
...d only to hold graphics and sound files used in several projects. They are all in one directory without sub-directories. Now I just created a script to copy these assets over from another, structured directory, with several levels of sub-directories.
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How to import data from mongodb to pandas?
...llection in mongodb which I need to analyze. How do i import that data to pandas?
12 Answers
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