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Float vs Decimal in ActiveRecord
...esent a Float. It's like a scientific notation for binary (something like +1.43*10^2). Because of that, it is impossible to store fractions and decimals in Float exactly.
That's why there is a Decimal format. If you do this:
irb:001:0> "%.47f" % (1.0/10)
=> "0.100000000000000005551115123125...
invalid multibyte char (US-ASCII) with Rails and Ruby 1.9
I'm using Ruby 1.9.1 with Rails 2.3.4 My application is to handle text input
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When should I use a composite index?
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You should use a composite index when you are using queries that benefit from it. A composite ...
Most common way of writing a HTML table with vertical headers?
...in a table should contain an equal number of columns (TD). Your header has 1 while the body has 3. You should use the colspan attribute to fix that.
Reference: "The THEAD, TFOOT, and TBODY sections must contain the same number of columns." - Last paragraph of section 11.2.3.
With that being said, ...
What do 'real', 'user' and 'sys' mean in the output of time(1)?
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Real, User and Sys process time statistics
One of these things is not like the other. Real r...
maximum value of int
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edited Jan 17 '12 at 9:26
Oliver Hanappi
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How do I get a human-readable file size in bytes abbreviation using .NET?
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How to pass parameters to a partial view in ASP.NET MVC?
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edited Oct 29 '13 at 15:01
Michał Powaga
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Can I get Memcached running on a Windows (x64) 64bit environment?
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13 Answers
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Data structure for loaded dice?
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You are looking for the alias method which provides a O(1) method for generating a fixed discr...