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C++ error: undefined reference to 'clock_gettime' and 'clock_settime'
...c version 2.17, the library linking -lrt is no longer required.
The clock_* are now part of the main C library. You can see the change history of glibc 2.17 where this change was done explains the reason for this change:
+* The `clock_*' suite of functions (declared in <time.h>) is now avai...
Reading a binary file with python
...ve something to unpack is pretty trivial:
import struct
data = open("from_fortran.bin", "rb").read()
(eight, N) = struct.unpack("@II", data)
This unpacks the first two fields, assuming they start at the very beginning of the file (no padding or extraneous data), and also assuming native byte-or...
How to print the full NumPy array, without truncation?
...
Use numpy.set_printoptions:
import sys
import numpy
numpy.set_printoptions(threshold=sys.maxsize)
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window.location.href and window.open () methods in JavaScript
...
What's the difference between using window.open(newUrl, '_self') and location.href = newUrl` ? Both will open the newUrl in the same tab.
– Harry
Sep 15 at 14:56
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Get keys from HashMap in Java
...
private Map<String, Integer> _map= new HashMap<String, Integer>();
Iterator<Map.Entry<String,Integer>> itr= _map.entrySet().iterator();
//please check
while(itr.hasNext())
{
...
Passing an Array as Arguments, not an Array, in PHP
...
http://www.php.net/manual/en/function.call-user-func-array.php
call_user_func_array('func',$myArgs);
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Commands executed from vim are not recognizing bash command aliases
...expansion of bash aliases, put your alias definitions in a file, e.g. .bash_aliases and explicitly enable alias expansion in this file:
shopt -s expand_aliases
alias la='ls -la'
Then add this to your .vimrc so the aliases file is actually read each time you run a shell command from within v...
How to determine the encoding of text?
... magic
blob = open('unknown-file', 'rb').read()
m = magic.open(magic.MAGIC_MIME_ENCODING)
m.load()
encoding = m.buffer(blob) # "utf-8" "us-ascii" etc
There is an identically named, but incompatible, python-magic pip package on pypi that also uses libmagic. It can also get the encoding, by doing:...
Why am I getting an Exception with the message “Invalid setup on a non-virtual (overridable in VB) m
...emplate = null);
}
And instead of
private Mock<XmlCupboardAccess> _xmlCupboardAccess = new Mock<XmlCupboardAccess>();
change to
private Mock<IXmlCupboardAccess> _xmlCupboardAccess = new Mock<IXmlCupboardAccess>();
...
Argparse optional positional arguments?
...se nargs='?' (or nargs='*' if you will need more than one dir)
parser.add_argument('dir', nargs='?', default=os.getcwd())
extended example:
>>> import os, argparse
>>> parser = argparse.ArgumentParser()
>>> parser.add_argument('-v', action='store_true')
_StoreTrueActi...