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What is the difference between the | and || or operators?
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12 Answers
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How to fix the uninitialized constant Rake::DSL problem on Heroku?
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205
Put this in your Rakefile above require 'rake':
require 'rake/dsl_definition'
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Find an element in a list of tuples
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240
If you just want the first number to match you can do it like this:
[item for item in a if it...
Adding a parameter to the URL with JavaScript
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How do you match only valid roman numerals with a regular expression?
...mple:
0: <empty> matched by M{0}
1000: M matched by M{1}
2000: MM matched by M{2}
3000: MMM matched by M{3}
4000: MMMM matched by M{4}
You could, of course, use something like M* to allow any number (including zero) of thousands, if you want to allow bigger numbers...
Is there common street addresses database design for all addresses of the world? [closed]
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When should I use nil and NULL in Objective-C?
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edited Jan 27 '16 at 14:15
community wiki
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Bytes of a string in Java
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291
A string is a list of characters (i.e. code points). The number of bytes taken to represent t...
JavaScript Regular Expression Email Validation [duplicate]
...ine it as a regular expression:
var pattern = /^\w+@[a-zA-Z_]+?\.[a-zA-Z]{2,3}$/;
BTW, please don't validate email addresses on the client-side. Your regular expression is way too simple to pass for a solid implementation anyway.
See the real thing here: http://www.ex-parrot.com/~pdw/Mail-RFC...