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jQuery: checking if the value of a field is null (empty)
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The value of a field can not be null, it's always a string value. this isn't entirely true. I've got a select containing no options. When I...
grepping using the “|” alternative operator
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136
You need to escape the |. The following should do the job.
grep "gene\|exon" AT5G60410.gff
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Creating temporary files in bash
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Will Barnwell
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answered Jun 11 '12 at 15:20
kojirokojiro
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How to do SELECT COUNT(*) GROUP BY and ORDER BY in Django?
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edited Aug 24 at 15:23
answered Sep 30 '13 at 19:44
Al...
Difference between document.addEventListener and window.addEventListener?
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3 Answers
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Create a folder inside documents folder in iOS apps
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326
I do that the following way:
NSError *error;
NSArray *paths = NSSearchPathForDirectoriesInDom...
in entity framework code first, how to use KeyAttribute on multiple columns
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SlaumaSlauma
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1
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Difference between $state.transitionTo() and $state.go() in Angular ui-router
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answered Jan 14 '14 at 3:53
Michelle TilleyMichelle Tilley
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Remove duplicate rows in MySQL
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A really easy way to do this is to add a UNIQUE index on the 3 columns. When you write the ALTER statement, include the IGNORE keyword. Like so:
ALTER IGNORE TABLE jobs
ADD UNIQUE INDEX idx_name (site_id, title, company);
This will drop all the duplicate rows. As an added benefit...
Enabling HTTPS on express.js
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In express.js (since version 3) you should use that syntax:
var fs = require('fs');
var http = require('http');
var https = require('https');
var privateKey = fs.readFileSync('sslcert/server.key', 'utf8');
var certificate = fs.readFileSync('sslcert/ser...