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What's the difference between HEAD^ and HEAD~ in Git?
... / ],
F => [ qw/ I J / ],
);
sub postorder {
my($root,$hash) = @_;
my @parents = @{ $parents{$root} || [] };
postorder($_, $hash) for @parents;
return if $sha1{$root};
@parents = map "-p $sha1{$_}", @parents;
chomp($sha1{$root} = `git commit-tree @parents -m "$roo...
How can I select rows with most recent timestamp for each key value?
...but here's more info if you wish, as well as other examples. It's from the MySQL manual, but above query works with every RDBMS (implementing the sql'92 standard).
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Python os.path.join on Windows
...join('c:', os.sep, 'sourcedir')
Since you also need os.sep for the posix root path:
mypath = os.path.join(os.sep, 'usr', 'lib')
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App Inventor 2 连接方式：AI伴侣、模拟器、USB · App Inventor 2 中文网
...了三星手机样式，屏幕及分辨率较高。
Q：商业模拟器如何使用？
A：步骤如下：
电脑网页上搜索MuMu，下载最新版模拟器。
启动后，在模拟器设置中设置为手机模式，选择适合自己的分辨率。
帮助菜单 ...
Spring Boot: How can I set the logging level with application.properties?
...at using your application.properties.
logging.level.=ERROR -> Sets the root logging level to error
...
logging.level.=DEBUG -> Sets the root logging level to DEBUG
logging.file=${java.io.tmpdir}/myapp.log -> Sets the absolute log file path to TMPDIR/myapp.log
A sane default set of applic...
Android Studio: Android Manifest doesn't exists or has incorrect root tag
I got this error on Android Studio (AS):
11 Answers
11
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Is it possible to delete an object's property in PHP?
...erties, this often happens in applications fetching from databases such as MySQL the records as an object instead of an array (using standard functions such as mysql_fetch_object()).
– gaborous
Jan 21 '15 at 20:37
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Build Android Studio app via command line
...
Android Studio automatically creates a Gradle wrapper in the root of your project, which is how it invokes Gradle. The wrapper is basically a script that calls through to the actual Gradle binary and allows you to keep Gradle up to date, which makes using version control easier. To run...
Default background color of SVG root element
...podi:namedview
pagecolor="#480000" ... >
Well, it seems that SVG root element is not part of paintable elements in SVG recommandations.
So I'd suggest to use the "rect" solution provided by Robert Longson because I guess that it is not a simple "hack". It seems to be the standard way to s...
Executing JavaScript without a browser?
...);
$ ls -lAF /usr/bin/js /etc/alternatives/js /usr/bin/nodejs
lrwxrwxrwx 1 root root 15 Jul 16 04:26 /etc/alternatives/js -> /usr/bin/nodejs*
lrwxrwxrwx 1 root root 20 Jul 16 04:26 /usr/bin/js -> /etc/alternatives/js*
-rwxr-xr-x 1 root root 1422004 Apr 28 20:31 /usr/bin/nodejs*
$ chm...