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Which version of PostgreSQL am I running?
...-------------------------------------------------
PostgreSQL 9.2.9 on x86_64-unknown-linux-gnu, compiled by gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-4), 64-bit
=> SHOW server_version;
server_version
----------------
9.2.9
=> SHOW server_version_num;
server_version_num
------------------...
How do you run a crontab in Cygwin on Windows?
...nistrator". In cmd prompt:
cd <directory_where_i_forgot_the setup-x86_64.exe> cygwin installer:
set package_name=cygrunsrv cron
setup-x86_64.exe -n -q -s http://cygwin.mirror.constant.com -P %package_name%
Ensure the installer does not throw any errors in the prompt ... If it has - you p...
What's the recommended way to extend AngularJS controllers?
...extend (or $.extend) actually means extending the $scope only, but if your base controller also defines some properties (e.g. this.myVar=5), you only have access to this.myVar in the extending controller when using angular.extend
– schellmax
Dec 23 '14 at 9:46
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Javascript: best Singleton pattern [duplicate]
...
function SingletonClass()
{
// demo variable
var names = [];
// instance of the singleton
this.singletonInstance = null;
// Get the instance of the SingletonClass
// If there is no instance in this.singletonInstance, instanciate one
...
Switch statement for greater-than/less-than
...ak;
case (scrollleft <= 1000):
alert('lt');
break;
}
Demo: http://jsfiddle.net/UWYzr/
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Javascript - removing undefined fields from an object [duplicate]
...=== undefined) {
delete obj[prop];
}
}
}
Working demo: http://jsfiddle.net/jfriend00/djj5g5fu/
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What is the maximum float in Python?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Eclipse executable launcher error: Unable to locate companion shared library
....jar
--launcher.library
plugins/org.eclipse.equinox.launcher.gtk.linux.x86_64_1.1.200.v20120913-144807
For some twisted reason jars have version in their name - so if you upgrade/have two different version of eclipse( while eclipse.ini is either linked or provided as system wide conf file for ecli...
How can I multiply and divide using only bit shifting and adding?
... = 21 * 5 (Same as initial expression)
(_2 means base 2)
As you can see, multiplication can be decomposed into adding and shifting and back again. This is also why multiplication takes longer than bit shifts or adding - it's O(n^2) rather than O(n) in the number of bits. R...
App Inventor 2 拓展参考文档 · App Inventor 2 中文网
...创建AI2组件对象
【Hash】文件Hash拓展：文件哈希计算和 Base64 编码文件，sha256、sha512 哈希
【向量计算】VectorArithmetic 拓展：计算两个向量相加的结果向量
【手机管理】App Inventor 2 TaifunTM 拓展：获取本机手机号码
【电池管...