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Drop multiple tables in one shot in mysql
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Why do we need extern “C”{ #include } in C++?
...the prototype as a C function, the C++ will actually generate code calling _Zprintf, plus extra crap at the end.)
So: use extern "C" {...} when including a c header—it's that simple. Otherwise, you'll have a mismatch in compiled code, and the linker will choke. For most headers, however, you won'...
How do I check if a number evaluates to infinity?
...
if (result == Number.POSITIVE_INFINITY || result == Number.NEGATIVE_INFINITY)
{
// ...
}
You could possibly use the isFinite function instead, depending on how you want to treat NaN. isFinite returns false if your number is POSITIVE_INFINITY, NEGAT...
Remove duplicate elements from array in Ruby
...
Just another alternative if anyone cares.
You can also use the to_set method of an array which converts the Array into a Set and by definition, set elements are unique.
[1,2,3,4,5,5,5,6].to_set => [1,2,3,4,5,6]
...
Comparing two NumPy arrays for equality, element-wise
... or simply want to be safe: use one of the specialized functions:
np.array_equal(A,B) # test if same shape, same elements values
np.array_equiv(A,B) # test if broadcastable shape, same elements values
np.allclose(A,B,...) # test if same shape, elements have close enough values
...
psql: FATAL: role “postgres” does not exist
...not have any login password.
Check this site for more articles like this: https://medium.com/@Nithanaroy/installing-postgres-on-mac-18f017c5d3f7
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How to start working with GTest and CMake
...stall GoogleTest
include(ExternalProject)
ExternalProject_Add(gtest
URL https://googletest.googlecode.com/files/gtest-1.7.0.zip
# Comment above line, and uncomment line below to use subversion.
# SVN_REPOSITORY http://googletest.googlecode.com/svn/trunk/
# Uncomment line below to freeze a ...
What are some compelling use cases for dependent method types?
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Structure padding and packing
...It inserts the following "gaps" into your first structure:
struct mystruct_A {
char a;
char gap_0[3]; /* inserted by compiler: for alignment of b */
int b;
char c;
char gap_1[3]; /* -"-: for alignment of the whole struct in an array */
} x;
Packing, on the other hand prevents ...
Permanently add a directory to PYTHONPATH?
...u're using (.profile or whatever, depending on your favorite shell) with a command which, again, depends on the shell in question; in Windows, you can do it through the system GUI for the purpose.
superuser.com may be a better place to ask further, i.e. for more details if you need specifics about ...