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nullable object must have a value
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edited Dec 14 '17 at 9:59
Matt
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Convert duration to hours:minutes:seconds (or similar) in Rails 3 or Ruby
I have a feeling there is a simple/built-in way to do this but I can't find it.
13 Answers
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Why does Double.NaN==Double.NaN return false?
... falsarella
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answered Jan 11 '12 at 13:06
Adrian MitevAdrian Mitev
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How to perform a mysqldump without a password prompt?
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Since you are using Ubuntu, all you need to do is just to add a file in your home directory an...
Timeout a command in bash without unnecessary delay
...what you are asking for:
http://www.bashcookbook.com/bashinfo/source/bash-4.0/examples/scripts/timeout3
#!/bin/bash
#
# The Bash shell script executes a command with a time-out.
# Upon time-out expiration SIGTERM (15) is sent to the process. If the signal
# is blocked, then the subsequent SIGKILL ...
What's the opposite of 'make install', i.e. how do you uninstall a library in Linux?
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answered Sep 17 '09 at 16:43
Josh KelleyJosh Kelley
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Why exactly is eval evil?
...e a macro that based on the first parameter uses either SIN or COS.
(foo 3 4) does (sin 4) and (foo 1 4) does (cos 4).
Now we may have:
(foo (+ 2 1) 4)
This does not give the desired result.
One then may want to repair the macro FOO by EVALuating the variable:
(defmacro foo (a b)
(list (if (eql (...
How to convert byte array to string and vice versa?
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edited Nov 3 '14 at 3:58
CoasterChris
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answered Oct 8 '09 ...
calculating the difference in months between two dates
... want it to work.
For example, should dates like July 5, 2009 and August 4, 2009 yield one month or zero months difference? If you say it should yield one, then what about July 31, 2009 and August 1, 2009? Is that a month? Is it simply the difference of the Month values for the dates, or is it mor...
How can I use a carriage return in a HTML tooltip?
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answered Dec 11 '08 at 10:24
GregGreg
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