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How do I use NSTimer?
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Alex RozanskiAlex Rozanski
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Determine the data types of a data frame's columns
...o use ?str(). To explore some examples, let's make some data:
set.seed(3221) # this makes the example exactly reproducible
my.data <- data.frame(y=rnorm(5),
x1=c(1:5),
x2=c(TRUE, TRUE, FALSE, FALSE, FALSE),
X3=letters[1:5])
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SQL SELECT WHERE field contains words
...lumn1 LIKE '%word1%'
OR column1 LIKE '%word2%'
OR column1 LIKE '%word3%'
If you need all words to be present, use this:
SELECT * FROM mytable
WHERE column1 LIKE '%word1%'
AND column1 LIKE '%word2%'
AND column1 LIKE '%word3%'
If you want something faster, you need to look into full tex...
Check if a value is in an array (C#)
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234
Add necessary namespace
using System.Linq;
Then you can use linq Contains() method
string[]...
Predicate in Java
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203
I'm assuming you're talking about com.google.common.base.Predicate<T> from Guava.
From th...
How do I serialize an object and save it to a file in Android?
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RalkieRalkie
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Remove the last character in a string in T-SQL?
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AdaTheDevAdaTheDev
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Specifying column name in a “references” migration
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edited Dec 4 '12 at 1:35
Tom Harrison
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answer...
LINQ .Any VS .Exists - What's the difference?
...her any element of a sequence satisfies a condition.
This is new in .NET 3.5 and uses Func(TSource, bool) as argument, so this was intended to be used with lambda expressions and LINQ.
In behaviour, these are identical.
s...
Func with out parameter
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Spencer Ruport
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answered Aug 15 '09 at 23:54
Mehrdad Afsh...