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Python argparse mutual exclusive group
...up mutually exclusive.
What you're looking for is subcommands. Instead of prog [ -a xxxx | [-b yyy -c zzz]], you'd have:
prog
command 1
-a: ...
command 2
-b: ...
-c: ...
To invoke with the first set of arguments:
prog command_1 -a xxxx
To invoke with the second set of argume...
How to detect iPhone 5 (widescreen devices)?
...5 in a non-optimized app.
IMPORTANT - iOS 8 support
On iOS 8, the bounds property of the UIScreen class now reflects the device orientation.
So obviously, the previous code won't work out of the box.
In order to fix this, you can simply use the new nativeBounds property, instead of bounds, as it ...
What is a tracking branch?
...
The ProGit book has a very good explanation:
Tracking Branches
Checking out a local branch from a remote branch automatically creates what is called a tracking branch. Tracking branches are local branches that have a direct rel...
动态追踪（Dynamic Tracing）技术漫谈 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...，使用 SystemTap 绘制出了 Nginx 进程的 off-CPU 火焰图。我在推特上公布了这个成功尝试之后，Brendan 还专门联系到我，说他自己之前也尝试过这种方式，但效果并不理想。我估计这是因为他当时将之应用于多线程的程序，比如 MySQL...
What's the difference between HEAD, working tree and index, in Git?
...On the contrary, heads are always moved to reflect the current position of project development.
(note: as commented by Timo Huovinen, those arrows are not what the commits point to, it's the workflow order, basically showing arrows as 1 -> 2 -> 3 -> 4 where 1 is the first commit and 4 is...
Generating a drop down list of timezones with PHP
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edited Jul 3 '13 at 15:51
Nathan J.B.
9,44...
PHP $_SERVER['HTTP_HOST'] vs. $_SERVER['SERVER_NAME'], am I understanding the man pages correctly?
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That’s probably everyone’s first thought. But it’s a little bit more difficult. See Chris Shiflett’s article SERVER_NAME Versus HTTP_HOST.
It seems that there is no silver bullet. Only when you force Apache to use the canonic...
What's the difference between including files with JSP include directive, JSP include action and usi
...lude> and <include-coda> elements respectively within
a <jsp-property-group> element in the Web application web.xml deployment descriptor. Read more here:
• Configuring Implicit Includes at the Beginning and End of JSPs
• Defining implicit includes
Tag File is an indir...
Why is my Git Submodule HEAD detached from master?
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edited Sep 8 '19 at 21:26
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How do I delete a Git branch locally and remotely?
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Delete Remote Branch [Original Answer from 5-Jan-2010]
From Chapter 3 of Pro Git by Scott Chacon:
Deleting Remote Branches
Suppose you’re done with a remote branch — say, you and your collaborators are finished with a feature and have merged it into your remote’s master branch (or w...