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How to change a git submodule to point to a subfolder?
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answered Mar 14 '11 at 20:05
Mark LongairMark Longair
358k6565 gold badges384384 silver badges314314 bronze badges
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Test whether string is a valid integer
...q "$1" ] 2>/dev/null
then
echo "$1 is an integer !!"
else
echo "ERROR: first parameter must be an integer."
echo $USAGE
exit 1
fi
This approach also accounts for negative numbers, which some of the other solutions will have a faulty negative result, and it will allow a prefix of...
Why is Double.MIN_VALUE in not negative
...recise ;-)
– aioobe
Oct 7 '10 at 19:05
You probably misunderstood me. In a better world, Double.MIN_VALUE would be equ...
find() with nil when there are no records
...in
user = User.find(10)
rescue ActiveRecord::RecordNotFound
puts "some error msg"
end
If you want to recover from the error in the rescue block (e.g. by setting a placeholder user (null pattern)), you can continue with your code below this block. Otherwise you might just put all your code for ...
How to convert timestamp to datetime in MySQL?
...e(UNIX_TIMESTAMP(CURRENT_TIMESTAMP)), '%Y-%m-%d') as DATE) < CAST('2019-05-02' AS DATE)) ; to compare dates, I replace 2019-05*02 a formatted datetime object in php. Thnaks.
– Mantisse
Apr 12 '19 at 18:00
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Why should I implement ICloneable in c#?
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answered Mar 30 '09 at 22:05
Matt HamiltonMatt Hamilton
183k5959 gold badges376376 silver badges317317 bronze badges
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form serialize javascript (no framework)
...ee, googlecode does not work without javascript. It simply spits That's an error
– user1040495
Apr 17 '17 at 14:35
3
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Gem::LoadError for mysql2 gem, but it's already in Gemfile
This error occurred while loading the following files:
14 Answers
14
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Calling shell functions with xargs
...'echo_var "$@"' _ {}
Also, using return 0 and exit 0 like that masks any error value that might be produced by the command preceding it. Also, if there's no error, it's the default and thus somewhat redundant.
@phobic mentions that the Bash command could be simplified to
bash -c 'echo_var "{}"'
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Safely turning a JSON string into an object
...SON.parse, the program MAY continue "successfully" but you'll still see an error thrown in the console with the dreaded "Error: unexpected token 'x'".
var data;
try {
data = JSON.parse(jqxhr.responseText);
} catch (_error) {}
data || (data = {
message: 'Server error, please retry'
});
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