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npm install error - MSB3428: Could not load the Visual C++ component “VCBuild.exe”
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edited Nov 26 '19 at 15:38
Ahmed Ashour
4,1191010 gold badges2828 silver badges4646 bronze badges
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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...
Where's the difference between setObject:forKey: and setValue:forKey: in NSMutableDictionary?
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edited May 23 '17 at 12:02
Community♦
111 silver badge
answered Aug 8 '09 at 19:09
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Superiority of unnamed namespace over static?
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2 Answers
2
Active
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How do you make lettered lists using markdown?
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Andrew Mascillaro
3691212 bronze badges
answered Mar 15 '13 at 0:01
creativecodercreativecoder
1,191...
What does a tilde do when it precedes an expression?
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273
~ is a bitwise operator that flips all bits in its operand.
For example, if your number was 1...
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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How to select date from datetime column?
I have a column of type "datetime" with values like 2009-10-20 10:00:00
8 Answers
8
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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 ...