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What does send() do in Ruby?
...argument).
Practically speaking, those lines are equivalent:
1.send '+', 2
1.+(2)
1 + 2
Note that send bypasses visibility checks, so that you can call private methods, too (useful for unit testing).
If there is really no variable before send, that means that the global Object is used:
send ...
Skip a submodule during a Maven build
...s>
<module>module1</module>
<module>module2</module>
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</modules>
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<profiles>
<profile>
<id>ci</id>
<modules>
<module>module1</module>
<module>...
rails 3 validation on uniqueness on multiple attributes
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In Rails 2, I would have written:
validates_uniqueness_of :zipcode, :scope => :recorded_at
In Rails 3:
validates :zipcode, :uniqueness => {:scope => :recorded_at}
For multiple attributes:
validates :zipcode, :uniquenes...
Are there any downsides to enabling git rerere?
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edited Jun 20 at 9:12
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answered Apr 2 '11 at 5:59
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SQL select only rows with max value on a column [duplicate]
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27 Answers
27
Active
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Match linebreaks - \n or \r\n?
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231
Gonna answer in opposite direction.
2) For a full explanation about \r and \n I have to refer...
Input and output numpy arrays to h5py
... using h5py reduces the file size considerably. So, let's say I have the 2D numpy array named A . How do I save it to an h5py file?
Also, how do I read the same file and put it as a numpy array in a different code, as I need to do manipulations with the array?
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What is a None value?
..., but others you have to write yourself with lines like F = "fork" and A = 2 and c17 = 3.14, and then you can stick them on other objects later (like F = 10 or F = None; it's all the same.)
Briggs is pretending that all possible stickers you might want to write were already stuck to the None object...
Get TransactionScope to work with async / await
...ionContext based on this example http://blogs.msdn.com/b/pfxteam/archive/2012/01/20/10259049.aspx .
3 Answers
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How to 'git pull' into a branch that is not the current one?
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edited Dec 16 '18 at 20:30
answered Sep 25 '13 at 2:21
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