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What is the purpose of a plus symbol before a variable?
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329
The + operator returns the numeric representation of the object. So in your particular case, i...
Simple explanation of clojure protocols
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2 Answers
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How to check if a model has a certain column/attribute?
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209
For a class
Use Class.column_names.include? attr_name where attr_name is the string name of y...
what's the meaning of '=?' in angularJS directive isolate scope declaration?
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limido
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answered Dec 7 '13 at 23:20
Matt ZeunertMatt Zeunert
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How can strings be concatenated?
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edited Apr 22 '18 at 1:52
Graham
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a...
Inheriting class methods from modules / mixins in Ruby
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def bar1
'bar1'
end
end
module ClassMethods
def bar2
'bar2'
end
end
end
class Test
include Foo
end
Test.new.bar1 # => "bar1"
Test.bar2 # => "bar2"
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Differences between ExpandoObject, DynamicObject and dynamic
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answered Aug 25 '10 at 11:57
SLaksSLaks
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Numpy array dimensions
... ndarray.shape
Tuple of array dimensions.
Thus:
>>> a.shape
(2, 2)
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Difference between Destroy and Delete
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294
Basically destroy runs any callbacks on the model while delete doesn't.
From the Rails API:
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Checking user's homepage in Internet Explorer
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T.J. CrowderT.J. Crowder
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