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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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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...
Node.js: Difference between req.query[] and req.params
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edited Mar 24 '17 at 16:33
answered Jan 19 '13 at 19:37
J...
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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SQLAlchemy: What's the difference between flush() and commit()?
...e same state as
# Foo('A') was above.
print 3, s2.query(Foo).all()
s2.rollback() # Foo('B') has not been committed, and rolling
# back the session's transaction removes it
# from the session....
How to remove all click event handlers using jQuery?
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31
Since jQuery 1.7, you should use on and off instead of bind and unbind
– Ralph Jansen
Jul 27 '12 at ...
How do I tell Maven to use the latest version of a dependency?
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753
NOTE:
This answer applies to Maven 2 only! The mentioned LATEST and RELEASE metaversions have ...
Easiest way to check for an index or a key in an array?
... "Correct usage: exists {key} in {array}"
return
fi
eval '[ ${'$3'[$1]+muahaha} ]'
}
For example
if ! exists key in array; then echo "No such array element"; fi
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