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Why does Git say my master branch is “already up to date” even though it is not?
...e is a very common "easy" case in which you have no changes and you get a "fast forward").
The situation you're encountering now is one in which you have made changes and committed them—nine times, in fact, hence the "ahead 9"—and they have made no changes. So, fetch dutifully fetches nothing,...
Python != operation vs “is not”
...ng to has the same memory address as the global None object - a very, very fast comparison of two numbers.
By comparing equality, Python has to look up whether your object has an __eq__ method. If it does not, it examines each superclass looking for an __eq__ method. If it finds one, Python calls i...
Why are preprocessor macros evil and what are the alternatives?
...what is going on.
Replacement: Use functions - inline if it needs to be "fast" (but beware that too much inline is not a good thing)
2) Macro expansions can have strange side effects.
The famous one is #define SQUARE(x) ((x) * (x)) and the use x2 = SQUARE(x++). That leads to x2 = (x++) * (x++);,...
How can I discard remote changes and mark a file as “resolved”?
...is simply a descendent of yours, in which case you will by default have a "fast-forward merge", in which your HEAD is just updated to their commit, with no merging happening (this can be disabled if you really want to record a merge, using --no-ff).
Then you get into the situations in which you ac...
Simulating tremor (from e.g. Parkinson's Disease) with the mouse on a webpage?
...0.01" to limit cpu usage and speed, because on my rig it makes unrealistic fast jumps with your code.
– nonchip
Aug 13 '14 at 17:11
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Performance difference for control structures 'for' and 'foreach' in C#
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When I replaced the for with a foreach -- the foreach was 20 milliseconds faster -- consistently. The for was 135-139ms while the foreach was 113-119ms. I swapped back and forth several times, making sure it wasn't some process that just kicked in.
However, when I removed the foo and the if statem...
How to use Boost in Visual Studio 2010
..._PROCESSORS% as an argument it will use all your cores. Makes things super fast on my quad core.
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What is the difference between a process and a thread?
...cases be done in user space. The advantage of user space threads is super fast thread switching since you don't have to trap into the kernel and the ability to schedule your threads the way you like. The biggest drawback is the inability to do blocking I/O (which would block the entire process and...
Is there any way to put malicious code into a regular expression?
...’s excellent 2007 paper on Regular Expression Matching Can Be Simple And Fast
(but is slow in Java, Perl, PHP, Python, Ruby, ...) talks about ways that most modern NFAs, which all seem to derive from Henry Spencer’s code, suffer severe performance degradation, but where a Thompson‐style NFA h...
How to encrypt/decrypt data in php?
...a known hash value. They're greatly optimized to make this verification as fast as possible while still being accurate. Given their relatively limited output space it was easy to build a database with known passwords and their respective hash outputs, the rainbow tables.
Adding a salt to the passwo...