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How to check if field is null or empty in MySQL?
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194
Either use
SELECT IF(field1 IS NULL or field1 = '', 'empty', field1) as field1
from tablename...
What are the relationships between Any, AnyVal, AnyRef, Object and how do they map when used in Java
...is equivalent to java.lang.Object (on the JVM at any rate).
Up to Scala 2.9.x, a user could not extend Any or AnyVal, nor reference them from Java, but there were other uses they could be put to in Scala. Specifically, type signatures:
def f(x: AnyVal) = println(x)
def g(x: AnyRef) = println(x)
de...
Convert string to integer type in Go?
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answered Nov 25 '10 at 17:39
peterSOpeterSO
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JComboBox Selection Change Listener?
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jodonnelljodonnell
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45
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How to go to an error using only the keyboard in Eclipse?
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xav
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answered Dec 2 '09 at 11:24
Joe DaleyJoe Daley
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How to hide “Showing 1 of N Entries” with the dataTables.js library
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259
You can remove it with the bInfo option (http://datatables.net/usage/features#bInfo)
$('#exa...
How to map calculated properties with JPA and Hibernate
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Ask613
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answered Jun 6 '10 at 23:30
Pascal ThiventPascal ...
Don't Echo Out cURL
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answered Dec 16 '09 at 22:54
Matt McCormickMatt McCormick
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Ruby on Rails. How do I use the Active Record .build method in a :belongs to relationship?
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edited Oct 1 '13 at 23:09
mahemoff
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answe...
extract part of a string using bash/cut/split
...sion without any extra processes...
MYVAR="/var/cpanel/users/joebloggs:DNS9=domain.com"
NAME=${MYVAR%:*} # retain the part before the colon
NAME=${NAME##*/} # retain the part after the last slash
echo $NAME
Doesn't depend on joebloggs being at a particular depth in the path.
Summary
An ov...