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Converting an array of objects to ActiveRecord::Relation
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How can I convert an Array of objects to an ActiveRecord::Relation? Preferably without doing...
What is mattr_accessor in a Rails module?
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phil pirozhkov
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answered Oct 9 '08 at 1:49
AvdiAvdi
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why does DateTime.ToString(“dd/MM/yyyy”) give me dd-MM-yyyy?
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Slash is a date delimiter, so that will use the current culture date delimiter.
If you want to...
Rails where condition using NOT NIL
...h Rails 3:
Foo.includes(:bar).where("bars.id IS NOT NULL")
ActiveRecord 4.0 and above adds where.not so you can do this:
Foo.includes(:bar).where.not('bars.id' => nil)
Foo.includes(:bar).where.not(bars: { id: nil })
When working with scopes between tables, I prefer to leverage merge so that...
Memory footprint of Haskell data types
... instance of these constructors and shares it amongst all uses.
A word is 4 bytes on a 32-bit machine, and 8 bytes on a 64-bit machine.
So e.g.
data Uno = Uno a
data Due = Due a b
an Uno takes 2 words, and a Due takes 3.
The Int type is defined as
data Int = I# Int#
now, Int# takes one wor...
Plotting time in Python with Matplotlib
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How to get last items of a list in Python?
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You can use negative integers with the slicing operator for that. Here's an example using the p...
RVM is not working in ZSH
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answered Jan 21 '11 at 5:24
intellidiotintellidiot
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HintPath vs ReferencePath in Visual Studio
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Set default syntax to different filetype in Sublime Text 2
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