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How do I use extern to share variables between source files?
...er links unless you override the
default with -fcommon (or use attributes, etc — see the link).
The next two files complete the source for prog2:
prog2.h
extern void dec(void);
extern void put(void);
extern void inc(void);
prog2.c
#include "prog2.h"
#include <stdio.h>
int main(void)
{
...
Check if an apt-get package is installed and then install it if it's not on Linux
...kage 'certbot' is not installed and no information is available
the file /etc/logrotate.d/certbot is still present in the system after apt remove, but not after --purge.
However, the file /usr/lib/python3/dist-packages/certbot/reporter.py is still present even after --purge.
I don't understand w...
JavaScript - Get Portion of URL Path
...cess the different sections of the URL beyod the standard protocol and www etc.
– Dylan
Nov 27 '17 at 15:21
2
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Why can't I define a static method in a Java interface?
...d. I believe static is a crummy term in languages anyway, and has been stretched too far as is. So having it by itself is already sketchy. See my example above stackoverflow.com/questions/512877/… {shrug}.
– user4229245
Sep 2 '16 at 18:14
...
Declare a constant array
...at32. (3) assign the expression to an array variable, a := [...]float32 { (etc.) } and return the slice of all elements: return a[:]. (Array literals are not addressable, I'm not clear why.)
– David Moles
Jan 3 '19 at 17:46
...
how to set desired language in git-gui?
...o the git.cmd is to put the line export LANG=en_US in c:\Program Files\git\etc\profile (this file is read when git bash starts).
– Superole
Oct 28 '13 at 11:30
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Correct way to try/except using Python requests module?
...
In the event of a network problem (e.g. DNS failure, refused connection, etc), Requests will raise a ConnectionError exception.
In the event of the rare invalid HTTP response, Requests will raise an HTTPError exception.
If a request times out, a Timeout exception is raised.
If a request exceeds th...
Matplotlib scatterplot; colour as a function of a third variable
...eral different grayscale colormaps pre-made (e.g. gray, gist_yarg, binary, etc).
import matplotlib.pyplot as plt
import numpy as np
# Generate data...
x = np.random.random(10)
y = np.random.random(10)
plt.scatter(x, y, c=y, s=500, cmap='gray')
plt.show()
...
Cause of a process being a deadlock victim
...ern, this is likely a better fix to make, before resorting to dirty reads, etc.
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How do you use the Immediate Window in Visual Studio?
... results to variables if you want to do further evaluations, calculations, etc.:
? string msg = foo.GetMessage();
"hello"
? msg + " there!"
"hello there!"
Furthermore, if you don’t even want to declare a variable name for a new object and just want to run one of its methods/functions then do th...