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Setting PayPal return URL and making it auto return?
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answered Oct 10 '11 at 4:05
Kevin StrickerKevin Stricker
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The cast to value type 'Int32' failed because the materialized value is null
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Anders AbelAnders Abel
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Difference between “\n” and Environment.NewLine
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answered Jun 18 '09 at 23:46
anthonyanthony
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Joining three tables using MySQL
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answered Sep 14 '10 at 14:11
raisynraisyn
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CSS scrollbar style cross browser [duplicate]
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– Stijn de Witt
Jul 31 '12 at 13:43
9
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Get first n characters of a string
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edited Sep 8 '14 at 18:05
Emil Vikström
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Get the time difference between two datetimes
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This approach will work ONLY when the total duration is less than 24 hours:
var now = "04/09/2013 15:00:00";
var then = "04/09/2013 14:20:30";
moment.utc(moment(now,"DD/MM/YYYY HH:mm:ss").diff(moment(then,"DD/MM/YYYY HH:mm:ss"))).format("HH:mm:ss")
// outputs: "00:39:30"
If you have 24...
Scala best way of turning a Collection into a Map-by-key?
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234
You can use
c map (t => t.getP -> t) toMap
but be aware that this needs 2 traversals.
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Convert the values in a column into row names in an existing data frame
...t;- df[,1]
R> df[,1] <- NULL
R> df
b c
a 1 A
b 2 B
c 3 C
d 4 D
e 5 E
f 6 F
g 7 G
h 8 H
i 9 I
j 10 J
R>
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