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Difference between this and self in JavaScript
Everyone is aware of this in javascript, but there are also instances of self encountered in the wild, such as here
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Setting an environment variable before a command in Bash is not working for the second command in a
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Use a shell script:
#!/bin/bash
# myscript
FOO=bar
somecommand someargs | somecommand2
> ./myscript
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How to set auto increment primary key in PostgreSQL?
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I have tried the following script to successfully auto-increment the primary key in PostgreSQL.
CREATE SEQUENCE dummy_id_seq
START WITH 1
INCREMENT BY 1
NO MINVALUE
NO MAXVALUE
CACHE 1;
CREATE table dummyTable (
id bigint DEFAULT nextval('dum...
What is the leading LINQ for JavaScript library? [closed]
I'm looking for a JavaScript library that will allow me to query complex JSON objects using a LINQ-like syntax. A quick search found a couple of promising options that look they might offer what I need:
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How can I add remote repositories in Mercurial?
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changegroup = hg update 2>&1 > /dev/null && path/to/script/restart-server.sh
Not everyone is a big fan of having remote repos automatically update their working directories on push, and it's certainly not the default.
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How to inherit from a class in javascript?
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In JavaScript you don't have classes but you can get inheritance and behavior reuse in many ways:
Pseudo-classical inheritance (through prototyping):
function Super () {
this.member1 = 'superMember1';
}
Super.prototype.member2 =...
Azure SQL Database Bacpac Local Restore
...o.
/tsn is the name of your SQL server.
You can see all these parameter descriptions on the link from #5.
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#pragma once vs include guards? [duplicate]
...or something like that--). Not taking into account speed, you could have a script that substituted any, say, %INCLUDE_GUARD% in a file for an automatically-managed guard symbol; you would write headers as header.hpp.in, and, because you would already have the preprocessor conditional pair, the final...
Get file version in PowerShell
...cs.FileVersionInfo]::GetVersionInfo($_).FileVersion }
Or even nicer as a script: https://jtruher3.wordpress.com/2006/05/14/powershell-and-file-version-information/
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How to make a cross-module variable?
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@sedeh: no. If a.py is also run as a script then use if __name__=="__main__" guard in it to avoid running unexpected code on import.
– jfs
Aug 23 '14 at 12:31
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