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How is a CRC32 checksum calculated?
... it is extremely difficult to find a polynomial that detects different bit errors effectively.
You can think of the CRC-32 as a series of "Binary Arithmetic with No Carries", or basically "XOR and shift operations". This is technically called Polynomial Arithmetic.
CRC primer, Chapter 5
To bett...
Java 8 Iterable.forEach() vs foreach loop
...generics, and lack of intermediate variables conspire to produce confusing error messages and frustrate debugging. Instead of "this method doesn't have an overload for type X" you get an error message closer to "somewhere you messed up the types, but we don't know where or how." Similarly, you can't...
Handling warning for possible multiple enumeration of IEnumerable
... need to use an IEnumerable<> several times thus get the Resharper error of "Possible multiple enumeration of IEnumerable ".
...
How to import other Python files?
...ky pie people can't go up and have the sky pie!
SKYCAKE!
If you get an error here: ModuleNotFoundError: No module named 'user' then it means you're using python3, startuphooks are disabled there by default.
Credit for this jist goes to: https://github.com/docwhat/homedir-examples/blob/master/py...
Differences between Emacs and Vim
...om vi to emacs for four reasons: (a) one click to get to the next compiler error, (b) gdb integration, (c) grep and find-grep. Is it possible to do these things in vim now?
– zzz777
May 26 '17 at 17:57
...
node.js global variables?
...allyExit: [Function],
chdir: [Function],
debug: [Function],
error: [Function],
cwd: [Function],
watchFile: [Function],
umask: [Function],
getuid: [Function],
unwatchFile: [Function],
mixin: [Function],
setuid: [Function],
setgid: [Function],
...
MongoDB atomic “findOrCreate”: findOne, insert if nonexistent, but do not update
... ok, thats a good idea, but for the pre-existing value it will return an error but NOT the value itself, right?
– Discipol
May 3 '13 at 14:41
3
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Swift equivalent for MIN and MAX macros
...
If you're getting a fun compiler error in XCode 9 like me, saying that max() doesn't exist even when you clearly pass it two Ints, then change it to Swift.max and suddenly yay, things are better. Thanks wm.p1us!
– xaphod
...
How do you test private methods with NUnit?
... objects with hardcoded behaviour to make it easier to isolate behavioural errors. Rhino.Mocks is a popular free mocking framework which will essentially write the objects for you. TypeMock.NET (a commercial product with a community edition available) is a more powerful framework which can mock CLR ...
Variable number of arguments in C++?
...would be variadic functions although they are not type-safe and in general error prone and can be unsafe to use but the only other potential alternative would be to use default arguments, although that has limited use. The example below is a modified version of the sample code in the linked referenc...