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Difference between DateTime and Time in Ruby
...g things such as current time of day, or points in the near future such as 10.minutes.from_now. The two have a lot in common, though as noted DateTime can represent a much wider range of values.
– tadman
Aug 11 '09 at 16:44
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Apply a function to every row of a matrix or a data frame
... 3 4
[3,] 5 6
R> apply(M, 1, function(x) 2*x[1]+x[2])
[1] 4 10 16
R>
This takes a matrix and applies a (silly) function to each row. You pass extra arguments to the function as fourth, fifth, ... arguments to apply().
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select * vs select column
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answered Jul 5 '10 at 14:50
Charles BretanaCharles Bretana
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Difference between fmt.Println() and println() in Go
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103
println is an built-in function (into the runtime) which may eventually be removed, while the ...
MySQL - length() vs char_length()
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AndomarAndomar
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What is the difference between related SQLite data-types like INT, INTEGER, SMALLINT and TINYINT?
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answered May 3 '10 at 22:13
J. PolferJ. Polfer
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CSS: How to have position:absolute div inside a position:relative div not be cropped by an overflow:
... #box2 { position: absolute }
#box3 { position: absolute; top: 10px }
/* Styling */
#box1 { background: #efe; padding: 5px; width: 125px }
#box2 { background: #fee; padding: 2px; width: 100px; height: 100px }
#box3 { background: #eef; padd...
MySQL: Sort GROUP_CONCAT values
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answered Jun 15 '09 at 10:23
SampsonSampson
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What is ApplicationException for in .NET?
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103
According to the remarks in msdn:
User applications, not the common language runtime, throw c...
How can one print a size_t variable portably using the printf family?
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answered Mar 26 '10 at 15:59
Adam RosenfieldAdam Rosenfield
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