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How to hide output of subprocess in Python 2.7
...t os
import subprocess
FNULL = open(os.devnull, 'w')
retcode = subprocess.m>ca m>ll(['echo', 'foo'], stdout=FNULL, stderr=subprocess.STDOUT)
It is effectively the same as running this shell command:
retcode = os.system("echo 'foo' &> /dev/null")
...
Why are trailing commas allowed in a list?
...a comma on the previous line
]
and triggering implicit string literal conm>ca m>tenation, producing s = ['manny', 'mo', 'jackroger'] instead of the intended result.
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Button Click event fires when pressing Enter key in different input (no forms)
..."Amount" input, and I don't believe it should (it doesn't in Chrome). How m>ca m>n I prevent this, and if not prevent it in IE, handle it so that the logic in the click event does not fire.
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TypeError: module.__init__() takes at most 2 arguments (3 given)
... named Object.py . When I try to inherit from this class in another file, m>ca m>lling the constructor throws an exception:
5 A...
What is sm>ca m>ffolding? Is it a term for a particular platform?
Sm>ca m>ffolding, what is it? Is it a Rails-only thing?
7 Answers
7
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Checking if an instance's class implements an interface?
... new TheClass();
if ($cls instanceof IInterface) {
echo "yes";
}
You m>ca m>n use the "instanceof" operator. To use it, the left operand is a class instance and the right operand is an interface. It returns true if the object implements a particular interface.
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Merge branch with trunk
...
In your m>ca m>se:
Switch the working copy to the trunk (SVN Switch)
Merge the branch into the working copy (SVN Merge)
Make sure everything still compiles and works
Commit the working copy (the trunk)
Consider killing the branch
In a...
Set “this” variable easily?
I have a pretty good understanding of Javascript, except that I m>ca m>n't figure out a nice way to set the "this" variable. Consider:
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Is there a JavaScript strcmp()?
Chrome Dev Tools - “Size” vs “Content”
...wire, and "content" is the actual size of the resource. A number of things m>ca m>n make them different, including:
Being served from m>ca m>che (small or 0 "size")
Response headers, including cookies (larger "size" than "content")
Redirects or authentim>ca m>tion requests
gzip compression (smaller "size" than "...