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Getting output of system() calls in Ruby
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what if I need to give a variable as part of my command? That is, what would something like system("ls " + filename) translate into when backticks are to be used?
– Vijay Dev
Dec 27 '09 ...
Swift Beta performance: sorting arrays
...anges the semantics of the language, making it potentially unsafe. This is what Apple states in the Xcode 5.0 release notes:
A new optimization level -Ofast, available in LLVM, enables aggressive optimizations. -Ofast relaxes some conservative restrictions, mostly for floating-point operations, ...
Clean up a fork and restart it from the upstream
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git push origin master --force
(Similar to this GitHub page, section "What should I do if I’m in a bad situation?")
Be aware that you can lose changes done on the master branch (both locally, because of the reset --hard, and on the remote side, because of the push --force).
An alternative w...
MySQL: @variable vs. variable. What's the difference?
...principles. Please don't write anther line of code until you know exactly what scope is, and why using using global variables is generally a terrible idea. When I took 101 programming classes, as I remember using a global for pretty much anything would result in an automatic "F". There are specia...
What does pylint's “Too few public methods” message mean
...lint on some code, and receiving the error "Too few public methods (0/2)". What does this message mean? The pylint docs are not helpful:
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How to replace a character by a newline in Vim
...way I can remember these is by remembering how little sense they make:
A: What would be the worst control-character to use to represent a newline?
B: Either q (because it usually means "Quit") or v because it would be so easy to type Ctrl + C by mistake and kill the editor.
A: Make it so.
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How to improve performance of ngRepeat over a huge dataset (angular.js)?
...t only to as many elements as the user can see.
If you do something like what's commonly known as "infinite scrolling", you're reducing the initial DOM count somewhat, but it bloats quickly after a couple refreshes, because all those new elements are just tacked on at the bottom. Scrolling comes t...
How to take a screenshot programmatically on iOS
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@wladimir-palant : What about Key-Board , Because when i use to take screen shot of sceen where user type , then key board not capture ,how can i add key-Board in screen capture..?
– g212gs
Jul 4 '14 at 4:...
why is plotting with Matplotlib so slow?
...so this isn't much of an issue.
However, without knowing a bit more about what you're doing, I can't help you there.
Nonetheless, there is a gui-neutral way of doing it that is still reasonably fast.
import matplotlib.pyplot as plt
import numpy as np
import time
x = np.arange(0, 2*np.pi, 0.1)
y ...
What is the use of style=“clear:both”?
I happened to see a div which had the style clear:both ! What is the use of clear in style ?
3 Answers
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