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Fastest way to check if string contains only digits
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edited Sep 18 '15 at 16:35
answered Sep 18 '11 at 11:13
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In C++, if throw is an expression, what is its type?
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According to the standard, 5.16 paragraph 2 first point, "The second or the third operand (but not both) is a throw-expression (15.1); the result is of the type of the other and is an rvalue." Therefore, the conditional operator doesn't care what type...
View inside ScrollView doesn't take all place
...w, the attribute has no effect.
http://www.curious-creature.org/2010/08/15/scrollviews-handy-trick/
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Access string.xml Resource File from Java Android Code
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5 Answers
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Should I URL-encode POST data?
...ray, the Content-Type header will be set to multipart/form-data. As of PHP 5.2.0, value must be an array if files are passed to this option with the @ prefix.
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Use curly braces to initialize a Set in Python
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How to debug external class library projects in visual studio?
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edited Mar 17 '09 at 15:47
answered Mar 17 '09 at 15:20
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Run a callback only if an attribute has changed in Rails
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Rails 5.1+
class Page < ActiveRecord::Base
before_save :do_something, if: :will_save_change_to_status_id?
private
def do_something
# ...
end
end
The commit that changed ActiveRecord::Dirty is here: https://githu...