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Return 0 if field is null in MySQL
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332
Use IFNULL:
IFNULL(expr1, 0)
From the documentation:
If expr1 is not NULL, IFNULL() ret...
SQL query for finding records where count > 1
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350
Use the HAVING clause and GROUP By the fields that make the row unique
The below will find
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Android: TextView: Remove spacing and padding on top and bottom
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535
setIncludeFontPadding (boolean includepad)
or in XML this would be:
android:includeFontPaddi...
An “and” operator for an “if” statement in Bash
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William PursellWilliam Pursell
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How do you remove the root CA certificate that fiddler installs
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Martijn Pieters♦
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answered Dec 13 '16 at 8:33
Eyal Ab...
How do I concatenate two text files in PowerShell?
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173
Simply use the Get-Content and Set-Content cmdlets:
Get-Content inputFile1.txt, inputFile2.txt |...
ALTER TABLE to add a composite primary key
...y.
– Adrian Cornish
Jan 14 '12 at 1:30
37
@David: it's a single primary key composed of multiple ...
How to convert a ruby hash object to JSON?
...though).
So, take a look here:
car = {:make => "bmw", :year => "2003"}
# => {:make=>"bmw", :year=>"2003"}
car.to_json
# NoMethodError: undefined method `to_json' for {:make=>"bmw", :year=>"2003"}:Hash
# from (irb):11
# from /usr/bin/irb:12:in `<main>'
require 'json'
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How to emulate C array initialization “int arr[] = { e1, e2, e3, … }” behaviour with std::array?
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63
Best I can think of is:
template<class T, class... Tail>
auto make_array(T head, Tail... ...
Adding services after container has been built
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edited May 12 '15 at 9:38
huysentruitw
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answ...