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What is the fastest way to create a checksum for large files in C#
...The problem here is that SHA256Managed reads 4096 bytes at a time (inherit from FileStream and override Read(byte[], int, int) to see how much it reads from the filestream), which is too small a buffer for disk IO.
To speed things up (2 minutes for hashing 2 Gb file on my machine with SHA256, 1 min...
Using CMake, how do I get verbose output from CTest?
...vironment variable CTEST_OUTPUT_ON_FAILURE, which will show you any output from the test program whenever the test fails. One way to do this when using Makefiles and the command line would be as follows:
env CTEST_OUTPUT_ON_FAILURE=1 make check
This Stack Overflow question and answer shows how t...
How do i find out what all symbols are exported from a shared object?
...have a shared object(dll). How do i find out what all symbols are exported from that?
9 Answers
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How do I specify the exit code of a console application in .NET?
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3 options:
You can return it from Main if you declare your Main method to return int.
You can call Environment.Exit(code).
You can set the exit code using properties: Environment.ExitCode = -1;. This will be used if nothing else sets the return code or ...
What is the difference between Flex/Lex and Yacc/Bison?
...ou may also find various alternative and approximately equivalent programs from the BSD world.
Lex and Yacc are maintained by the Unix SVRx licencees - companies such as IBM (AIX), HP (HP-UX) and Sun (Solaris) have modified versions of Lex and Yacc at their command. MKS also provides MKS Lex and M...
What's the difference between a file descriptor and file pointer?
...ot. In practice, you want to use FILE * almost always when you are reading from a 'real' file (ie. on the drive), unless you know what you are doing or unless your file is actually a socket or so..
You can get the file descriptor from the FILE * using fileno() and you can open a buffered FILE * fro...
TDD vs. Unit testing [closed]
...'m wary about the "100% completed library" with 50% test coverage ... just from my experience that every piece of code that isn't covered by some tests contains at least one bug. Or to put it another way: People tend to avoid writing tests for code that would really benefit from some more testing :)...
Powershell equivalent of bash ampersand (&) for forking/running background processes
... or a file that has an associated executable, use Start-Process (available from v2):
Start-Process -NoNewWindow ping google.com
You can also add this as a function in your profile:
function bg() {Start-Process -NoNewWindow @args}
and then the invocation becomes:
bg ping google.com
In my opi...
Remove new lines from string and replace with one empty space
Want to remove all new lines from string.
19 Answers
19
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Make virtualenv inherit specific packages from your global site-packages
...But for some reason I do not know there was a package that was beeing used from the global system. Using pip install -I for the package from inside the virtualenv didn't work. I finally ended up uninstalling temporarily the package both from the virtualenv and global system, Then I could install it ...