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How to make an app's background image repeat
...keep in mind is that you should have folders drawable-hdpi, drawable-mdpi & drawable-ldpi, you'll need to add this backrepeat.xml file and the relevant images to each of these to allow this functionality in high, medium and low dpi (dots per inch) screen sizes.
– saber taba...
No secret option provided to Rack::Session::Cookie warning?
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Update your rails gems as this is backported to all supported rails gems. note @henrik-n
– shadowbq
Feb 4 '13 at 11:14
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What is the difference between encrypting and signing in asymmetric encryption?
What is the difference between encrypting some data vs signing some data (using RSA)?
11 Answers
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Why does Lua have no “continue” statement?
I have been dealing a lot with Lua in the past few months, and I really like most of the features but I'm still missing something among those:
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技术人员如何创业《一》—— 产品及想法 - 资讯 - 清泛网 - 专注C/C++及内核技术
...销方式、整合自身独有的资源优势（哈佛）。其实他这个php网站我想现在很多学过web编程的都可以制造出来，有几个能做成facebook呢？
在《中国合伙人》中也有个场景，成东青因为在外面开小班被大学辞退了。最后一堂课时改...
How to tell if a string is not defined in a Bash shell script
...[ -z "${VAR+xxx}" ]; then echo VAR is not set at all; fi
if [ -z "$VAR" ] && [ "${VAR+xxx}" = "xxx" ]; then echo VAR is set but empty; fi
You probably can combine the two tests on the second line into one with:
if [ -z "$VAR" -a "${VAR+xxx}" = "xxx" ]; then echo VAR is set but empty; fi
Ho...
Why should I care about lightweight vs. annotated tags?
...ity for the paranoid. Most of us aren't ever going to use it, but if you really want to verify everything before you put that software on your computer, you might want it.
Edit:
As for what to write in a tag annotation, you're right - there's not always much useful to say. For a version number tag...
Is it possible to override JavaScript's toString() function to provide meaningful output for debuggi
...pt program, I just see the output [object Object] , which is not very helpful in figuring out what object (or even what type of object) it is.
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Crop MP3 to first 30 seconds
...exe win32 process. I assume something similar could be done in your Linux/PHP scenario.
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What's the difference between Perl's backticks, system, and exec?
...It never returns true, because if the command is found it never returns at all.
There is also no point in returning STDOUT, STDERR or exit status of the command.
You can find documentation about it in perlfunc,
because it is a function.
system
executes a command and your Perl script is con...