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How to correctly use the extern keyword in C
...keyword, the function / variable is assumed to be available somewhere else and the resolving is deferred to the linker.
There's a difference between "extern" on functions and on variables: on variables it doesn't instantiate the variable itself, i.e. doesn't allocate any memory. This needs to be do...
How does the socket API accept() function work?
The socket API is the de-facto standard for TCP/IP and UDP/IP communications (that is, networking code as we know it). However, one of its core functions, accept() is a bit magical.
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When to use Amazon Cloudfront or S3
...to Amazon cloudfront over s3 or the other way around? I'm trying to understand the difference between the 2 through examples.
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Is bool a native C type?
...kernel code uses bool, but I thought that bool was a C++ type. Is bool a standard C extension (e.g., ISO C90) or a GCC extension?
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What is the Windows equivalent of the diff command?
...t there is a post similar to this : here .
I tried using the comp command like it mentioned, but if I have two files, one with data like "abcd" and the other with data "abcde", it just says the files are of different sizes. I wanted to know where exactly they differ. In Unix, the simple diff te...
Visual Studio Project vs. Solution
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A solution is a container for projects, and tracks dependencies between projects.
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Renaming projects in Xcode 4
...d to do is click twice slowly on the project root in the project navigator and it then becomes editable. After you rename the project and press 'enter' it will suggest to automatically change all project-name-related entries and will allow you to de-select some of them if you want.
Nice.
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How is this fibonacci-function memoized?
...mechanism in Haskell is by-need: when a value is needed, it is calculated, and kept ready in case it is asked for again. If we define some list, xs=[0..] and later ask for its 100th element, xs!!99, the 100th slot in the list gets "fleshed out", holding the number 99 now, ready for next access.
Th...
Securing my REST API with OAuth while still allowing authentication via third party OAuth providers
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First I'd like to emphasize the difference between authentication and authorization:
A user authenticates to your web site by supplying some credential such as a username+password. OpenID allows this to be displaced by having the user authenticate to another service, which then asserts th...
How to squash commits in git after they have been pushed?
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Squash commits locally with
git rebase -i origin/master~4 master
and then force push with
git push origin +master
Difference between --force and +
From the documentation of git push:
Note that --force applies to all the refs that are pushed, hence using
it with push.default s...