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Purging file from Git repo failed, unable to create new backup
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edited Apr 4 '14 at 0:53
user456814
answered Jun 19 '11 at 18:37
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argparse store false if unspecified
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edited Nov 20 '11 at 19:11
answered Nov 20 '11 at 18:31
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How do I test if a variable is a number in Bash?
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One approach is to use a regular expression, like so:
re='^[0-9]+$'
if ! [[ $yournumber =~ $re ]] ; then
echo "error: Not a number" >&2; exit 1
fi
If the value is not necessarily an integer, consider amending the regex appropriately; for instance:
^[0-9]+([.][0-9]+)?$
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Java 8 stream reverse order
...ect[] temp = input.toArray();
return (Stream<T>) IntStream.range(0, temp.length)
.mapToObj(i -> temp[temp.length - i - 1]);
}
Another technique uses collectors to accumulate the items into a reversed list. This does lots of insertions at the front of Ar...
Difference between a Factory, Provider and a Service?
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edited Dec 4 '09 at 21:16
answered Dec 4 '09 at 21:06
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Append an element with fade in effect [jQuery]
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$(html).hide().appendTo("#mycontent").fadeIn(1000);
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jQuery get the image src
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205
src should be in quotes:
$('.img1 img').attr('src');
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Changing .prop using jQuery does not trigger .change event
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202
Change event is fired when the value is changed by users interaction on page and not when value...
Show filename and line number in grep output
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edited Dec 17 '15 at 19:06
Drew Gaynor
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Reading header data in Ruby on Rails
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edited Apr 10 '16 at 20:00
answered Feb 6 '13 at 13:08
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