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Should I use the Reply-To header when sending emails as a service to others?
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answered Jan 18 '11 at 20:01
dkarpdkarp
13.4k55 gold badges5353 silver badges6262 bronze badges
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Create Directory if it doesn't exist with Ruby
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answered Oct 9 '13 at 19:08
zrl3dxzrl3dx
7,08833 gold badges2222 silver badges3333 bronze badges
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How to extract the first two characters of a string in shell scripting?
...er expansion:
pax> long="USCAGol.blah.blah.blah"
pax> short="${long:0:2}" ; echo "${short}"
US
This will set short to be the first two characters of long. If long is shorter than two characters, short will be identical to it.
This in-shell method is usually better if you're going to be doi...
How to erase the file contents of text file in Python?
...if you have already an opened file:
f = open('file.txt', 'r+')
f.truncate(0) # need '0' when using r+
In C++, you could use something similar.
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Named regular expression group “(?Pregexp)”: what does “P” stand for?
...ons
From: Guido van Rossum (gui...@CNRI.Reston.Va.US)
Date: Dec 10, 1997 3:36:19 pm
I have an unusual request for the Perl developers (those that develop
the Perl language). I hope this (perl5-porters) is the right list. I
am cc'ing the Python string-sig because it is the origin...
“icon-bar” in twitter bootstrap navigation bar
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130
icon-bar is used for responsive layouts to create a button that looks like ≡ on narrow browser...
What is the difference between object keys with quotes and without quotes?
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answered Dec 3 '10 at 18:10
bdukesbdukes
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getSupportActionBar from inside of Fragment ActionBarCompat
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290
After Fragment.onActivityCreated(...) you'll have a valid activity accessible through getActivit...
Why prefer two's complement over sign-and-magnitude for signed numbers?
..., 2 and -1. In your "intuitive" way of representing numbers, they would be 0010 and 1001, respectively (I'm sticking to 4 bits for size). In the two's complement way, they are 0010 and 1111. Now, let's say I want to add them.
Two's complement addition is very simple. You add numbers normally and an...
How to get all child inputs of a div element (jQuery)
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308
Use it without the greater than:
$("#panel :input");
The > means only direct children of ...