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Test if string is a number in Ruby on Rails
...t(string) rescue false
end
And then call it like this:
my_string = '12.34'
is_number?( my_string )
# => true
Extend String Class.
If you want to be able to call is_number? directly on the string instead of passing it as a param to your helper function, then you need to define is_number? as...
Twitter Bootstrap modal: How to remove Slide down effect
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edited Apr 4 '14 at 20:59
digitalextremist
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How to compare arrays in JavaScript?
...operty(Array.prototype, "equals", {enumerable: false});
Usage:
[1, 2, [3, 4]].equals([1, 2, [3, 2]]) === false;
[1, "2,3"].equals([1, 2, 3]) === false;
[1, 2, [3, 4]].equals([1, 2, [3, 4]]) === true;
[1, 2, 1, 2].equals([1, 2, 1, 2]) === true;
You may say "But it is much faster to compare strings ...
Having the output of a console application in Visual Studio instead of the console
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edited Aug 19 '18 at 7:34
LUser
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answered Mar 31 ...
How to get a list of user accounts using the command line in MySQL?
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edited May 23 '17 at 12:34
community wiki
5 re...
libxml install error using pip
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486
** make sure the development packages of libxml2 and libxslt are installed **
From the lx...
Error Code: 1005. Can't create table '…' (errno: 150)
...e relationship
The name of your foreign key exceeds the maximum length of 64 characters.
For more details, refer to: MySQL Error Number 1005 Can’t create table
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How to make a .jar out from an Android Studio project
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Abhinav TyagiAbhinav Tyagi
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How can I get the current screen orientation?
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483
Activity.getResources().getConfiguration().orientation
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How to sort by two fields in Java?
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edited Mar 28 '18 at 14:30
Mathias Pahlen
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answered Jan 26 '11 at 14:31
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