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How do PHP sessions work? (not “how are they used?”)
...to the user when his session is created.
it is stored in a cookie (called, by default, PHPSESSID)
that cookie is sent by the browser to the server with each request
the server (PHP) uses that cookie, containing the session_id, to know which file corresponds to that user.
The data in the sessions f...
Is file append atomic in UNIX?
... size of 'PIPE_BUF' is supposed to be atomic. That should be at least 512 bytes, though it could easily be larger (linux seems to have it set to 4096).
This assume that you're talking all fully POSIX-compliant components. For instance, this isn't true on NFS.
But assuming you write to a log file...
Why is “throws Exception” necessary when calling a function?
...They usually are not the programmer's fault. For example, a file specified by user is not readable, or no network connection available, etc., In all these cases, our program doesn't need to exit, instead it can take actions like alerting the user, or go into a fallback mechanism(like offline working...
How to commit changes to a new branch
... target branch without triggering an overwrite.
As in the accepted answer by John Brodie, you can simply checkout the new branch and commit the work:
git checkout -b branch_name
git add <files>
git commit -m "message"
If your changes are incompatible with the other branch
If you get the e...
How to negate specific word in regex? [duplicate]
...onstruct is the pair of parentheses, with the opening parenthesis followed by a question mark and an exclamation point. Inside the lookahead [is any regex pattern].
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Lazy Method for Reading Big File in Python?
...GB and when I try to read it my computer hangs.
So I want to read it piece by piece and after processing each piece store the processed piece into another file and read next piece.
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Is MonoTouch now banned on the iPhone? [closed]
A recent post by John Gruber notes that the following legalese:
18 Answers
18
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Ruby: Change negative number to positive number?
What's the simplest way of changing a negative number to positive with ruby?
3 Answers
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Explain which gitignore rule is ignoring my file
Is there any way to see why some file is getting ignored by git (i.e. which rule in a .gitignore file is causing the file to be ignored)?
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Where to place and how to read configuration resource files in servlet based application?
...application archive (WAR):
1. Put it in classpath
So that you can load it by ClassLoader#getResourceAsStream() with a classpath-relative path:
ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
InputStream input = classLoader.getResourceAsStream("foo.properties");
// ...
Prop...