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Wait for a process to finish
...n "$@"; do
while kill -0 "$pid"; do
sleep 0.5
done
done
}
Or as a simpler oneliner for easy one time usage:
while kill -0 PIDS 2> /dev/null; do sleep 1; done;
As noted by several commentators, if you want to wait for processes that you do not have the privileg...
Stacking Divs from Bottom to Top
...ll the answers miss the scrollbar point of your question. And it's a tough one. If you only need this to work for modern browsers and IE 8+ you can use table positioning, vertical-align:bottom and max-height. See MDN for specific browser compatibility.
Demo (vertical-align)
.wrapper {
display: t...
Do you continue development in a branch or in the trunk? [closed]
...you would like to merge these tasks and perform a release.
QA should be done on each branch before it is merged to the trunk.
By doing QA on each individual branch, you will know exactly what caused the bug easier.
This solution scales to any number of developers.
This method works since branch...
dismissModalViewControllerAnimated deprecated
... to XCode 4.5 to update my iOS app to run on the 4 inch display for the iPhone 5, but I'm getting a build error saying dismissModalViewControllerAnimated:' is deprecated on the line:
...
Why does typeof array with objects return “object” and not “array”? [duplicate]
...
One of the weird behaviour and spec in Javascript is the typeof Array is Object.
You can check if the variable is an array in couple of ways:
var isArr = data instanceof Array;
var isArr = Array.isArray(data);
But the mo...
Can you add new statements to Python's syntax?
...to add an until statement to Python.
All the coding for this article was done against the cutting-edge Py3k branch in the Python Mercurial repository mirror.
The until statement
Some languages, like Ruby, have an until statement, which is the complement to while (until num == 0 is equivalent to w...
Django - what is the difference between render(), render_to_response() and direct_to_template()?
...ent version (1.2.1) but many have created their own shortcuts such as this one, this one or the one that threw me initially, Nathans basic.tools.shortcuts.py
share
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improve this answer
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Any shortcut to initialize all array elements to zero?
...he language spec:
Each class variable, instance variable, or array component is initialized with a default value when it is created (§15.9, §15.10) [...] For type int, the default value is zero, that is, 0.
If you want to initialize an one-dimensional array to a different value, you can u...
How to find out the number of CPUs using python
...said of "Googling"--- I find from the use of /proc/cpuinfo that if for any one of the listings for each "processor" you multiply the "siblings" by the "cpu cores" you get your "Cpus_allowed" number. And I gather that the siblings refer to hyper-threading, hence your reference to "virtual". But the f...
Python assigning multiple variables to same value? list behavior
...assign them individually. You can either repeat the explicit list, or use one of the numerous ways to copy a list:
b = a[:] # this does a shallow copy, which is good enough for this case
import copy
c = copy.deepcopy(a) # this does a deep copy, which matters if the list contains mutable objects
As...