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Batch equivalent of Bash backticks
...edirecting the output to a file first. For example:
echo zz > bla.txt
set /p VV=<bla.txt
echo %VV%
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Printing everything except the first field with awk
...am BN
Explanation:
$(NF+1)=$1: Generator of a "new" last field.
$1="": Set the original first field to null
sub(FS,""): After the first two actions {$(NF+1)=$1;$1=""} get rid of the first field separator by using sub. The final print is implicit.
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Override devise registrations controller
...ctly the same thing (I just have Organization instead of Company).
If you set properly your nested form, at model and view level, everything works like a charm.
My User model:
class User < ActiveRecord::Base
# Include default devise modules. Others available are:
# :token_authenticatable, ...
How do I put two increment statements in a C++ 'for' loop?
I would like to increment two variables in a for -loop condition instead of one.
8 Answers
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rails i18n - translating text with links inside
...h do |type, message|
# Skip empty messages, e.g. for devise messages set to nothing in a locale file.
next if message.blank?
type = type.to_sym
type = :success if type == :notice
type = :error if type == :alert
next unless ALERT_TYPES.include?(type)
Arra...
How do I parse a string to a float or int?
...n, how can I parse a numeric string like "545.2222" to its corresponding float value, 545.2222 ? Or parse the string "31" to an integer, 31 ?
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Hidden Features of JavaScript? [closed]
What "Hidden Features" of JavaScript do you think every programmer should know?
99 Answers
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Can a decorator of an instance method access the class?
...EP: python.org/dev/peps/pep-0232 Not sure it's possible because you can't set an attribute on a class/static method and I think they gobble up any custom function attributes when they are applied to a function.
– Carl G
Apr 14 '10 at 0:42
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Efficient method to generate UUID String in JAVA (UUID.randomUUID().toString() without the dashes)
I would like an efficient utility to generate unique sequences of bytes. UUID is a good candidate but UUID.randomUUID().toString() generates stuff like 44e128a5-ac7a-4c9a-be4c-224b6bf81b20 which is good, but I would prefer dash-less string.
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Resizing an image in an HTML5 canvas
...errible. It looks as if it was downsized in photoshop with the resampling set to 'Nearest Neighbor' instead of Bicubic. I know its possible to get this to look right, because this site can do it just fine using a canvas as well. I've tried using the same code they do as shown in the "[Source]" ...