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Multiline bash commands in makefile
...ig difference if you sometimes want to copy the script and run it directly from a shell prompt. You can wreak havoc on your shell instance by declaring variables, and especially modifying state with set, inside of {}. () prevents the script from modifying your environment, which is probably prefer...
git push to specific branch
...ite my git push command. As mentioned in the question link, it's not clear from the documentation.
4 Answers
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How to plot multiple functions on the same figure, in Matplotlib?
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To plot multiple graphs on the same figure you will have to do:
from numpy import *
import math
import matplotlib.pyplot as plt
t = linspace(0, 2*math.pi, 400)
a = sin(t)
b = cos(t)
c = a + b
plt.plot(t, a, 'r') # plotting t, a separately
plt.plot(t, b, 'b') # plotting t, b separately ...
How do I pipe a subprocess call to a text file?
...object or a file descriptor. The first is the default, stdout is inherited from the parent (your script). The second allows you to pipe from one command/process to another. The third and fourth are what you want, to have the output written to a file.
You need to open a file with something like open...
Replace a value if null or undefined in JavaScript
...le on JavaScript, though browser support is limited. According to the data from caniuse, only 48.34% of browsers are supported (as of April 2020).
According to the documentation,
The nullish coalescing operator (??) is a logical operator that
returns its right-hand side operand when its left...
WPF Timer Like C# Timer
...rpret. Far better is var timer = new DispatcherTimer { Interval = TimeSpan.FromSeconds(1) };
– Jim Balter
Jun 20 '17 at 5:11
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When do we need to set ProcessStartInfo.UseShellExecute to True?
...utput by doing process.Arguments= "cmd /c dir >c:\\crp\\a.a". Likewise from a run dialog box you can do cmd /c dir>c:\crp\a.a
– barlop
Apr 24 '16 at 22:51
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How do I capture bash output to the Mac OS X clipboard?
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The pbcopy command does this.
For example, this puts the output from ls on the clipboard/pasteboard:
ls | pbcopy
And pbpaste does the reverse, writing to stdout from the clipboard:
pbpaste > ls.txt
You can use both together to filter content on the clipboard - here's a rot13:
pb...
How to get string width on Android?
...t = new Paint();
paint.setTextSize(20);
Typeface typeface = Typeface.createFromAsset(getAssets(), "Helvetica.ttf");
paint.setTypeface(typeface);
paint.setColor(Color.BLACK);
paint.setStyle(Paint.Style.FILL);
Rect result = new Rect();
paint.getTextBounds(str, 0, str.length(), result);
Log.i("Text di...
Capturing Ctrl-c in ruby
...comes in, it raises Interrupt. Since both SystemExit and Interrupt derive from Exception, your exception handling is stopping the exit or interrupt in its tracks. Here's the fix:
Wherever you can, change
rescue Exception => e
# ...
end
to
rescue StandardError => e
# ...
end
for t...