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looping through an NSMutableDictionary
How do I loop through all objects in a NSMutableDictionary regardless of the keys?
6 Answers
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Redis is single-threaded, then how does it do concurrent I/O?
...n how you define concurrency.
In server-side software, concurrency and parallelism are often considered as different concepts. In a server, supporting concurrent I/Os means the server is able to serve several clients by executing several flows corresponding to those clients with only one computatio...
Meaning of tilde in Linux bash (not home directory)
...sh feature called "tilde expansion". It's a function of the shell, not the OS. You'll get different behavior with csh, for example.
To answer your question about where the information comes from: your home directory comes from the variable $HOME (no matter what you store there), while other user's h...
How do I see the current encoding of a file in Sublime Text?
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Clicking the new status bar panel also allows you to conveniently change it or re-open the file in a different encoding.
– Immo Landwerth
Dec 22 '13 at 23:45
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Conditional Variable vs Semaphore
... that a piece of code is atomic, put a lock around it. You could theoretically use a binary semaphore to do this, but that's a special case.
Semaphores and condition variables build on top of the mutual exclusion provide by locks and are used for providing synchronized access to shared resources. ...
Make xargs execute the command once for each line of input
...per command line.
Trailing blanks cause an input line to be logically continued on
the next input line. Implies -x.
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Is there a way to quickly capitalize the variable name in Eclipse
...haracters, and that is hard to get right.
If you look at these, they are all either unlikely to be needed much, or too hard to do properly. Hence, it doesn't surprise me that they are not supported by the standard Eclipse codebase.
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How to search DOM elements using XPath or CSS selectors in Chrome Developer Tools?
...ction accepts a second optional argument, context. $x(xpath, context) This allows you to select a particular iframe content, for example, and run an xpath query against it. So for the first iframe: myframe = document.getElementsByTagName("iframe")[0].contentWindow.document.body; #to xpath query that...
What is the difference between save and export in Docker?
... Docker for a couple of days and I already made some images (which was really fun!). Now I want to persist my work and came to the save and export commands, but I don't fully understand them.
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Facebook development in localhost
...to know if there is any way I could develop Facebook applications in localhost.
20 Answers
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