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What are '$$' used for in PL/pgSQL
...for dollar quoting and are in no way specific to function definitions. It can be used to replace single quotes practically anywhere in SQL scripts.
The body of a function happens to be a string literal which has to be enclosed in single quotes. Dollar-quoting is a PostgreSQL-specific substitute fo...
How can I tell Moq to return a Task?
...
Your method doesn't have any callbacks so there is no reason to use .CallBack(). You can simply return a Task with the desired values using .Returns() and Task.FromResult, e.g.:
MyType someValue=...;
mock.Setup(arg=>arg.DoSomethingAsync())
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Return first match of Ruby regex
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@dmourati You can find this feature documented in String#[]. Thanks for asking about the doc, because in reading it I found the capture argument – which lets you return a capture instead of the full match.
– slothbe...
Rails.env vs RAILS_ENV
...ctiveSupport::StringInquirer.new(RAILS_ENV)
end
But, look at specifically how it's wrapped, using ActiveSupport::StringInquirer:
Wrapping a string in this class gives
you a prettier way to test for
equality. The value returned by
Rails.env is wrapped in a
StringInquirer object s...
What's the difference between io.sockets.emit and broadcast?
What's the difference between io.sockets.emit and socket.broadcast.emit? Is it only that broadcast emits to everyone BUT the socket that sends it?
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Get current stack trace in Ruby without raising an exception
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You can use Kernel#caller:
# /tmp/caller.rb
def foo
puts caller # Kernel#caller returns an array of strings
end
def bar
foo
end
def baz
bar
end
baz
Output:
caller.rb:8:in `bar'
caller.rb:12:in `baz'
caller.rb:1...
What is sys.maxint in Python 3?
... integer, and I've read to use "sys.maxint" . However, in Python 3 when I call it I get:
6 Answers
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Adding a y-axis label to secondary y-axis in matplotlib
I can add a y label to the left y-axis using plt.ylabel , but how can I add it to the secondary y-axis?
3 Answers
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How do you reference a capture group with regex find and replace in Visual Studio 2012, 2013, 2015,
...lize there are a ton of questions about this, but none that I found specifically referenced which VS version they referred to. With that important information lacking, I still was unable to successfully use the answers I found. The most common was
...
How can I make Array.Contains case-insensitive on a string array?
I am using the Array.Contains method on a string array. How can I make that case-insensitive?
4 Answers
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