How do I convert "$ 10.80" to decimal? By using regex?
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What do you mean by "decimal"? An arbitrary precision floating-point?Jan– Jan2011-12-18 10:13:01 +00:00Commented Dec 18, 2011 at 10:13
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7 Answers
It's maybe not the best way to do it but here is something that works :
"$ 10.80".match(/[0-9|\.]+/)[0].to_f
1 Comment
TonyTakeshi
Nice solution. Could just use this to extract the decimal value from any string. Thanks
s = "$ 10.80"
BigDecimal.new s.match(/(\d+\.\d+)/)[1]
Returns your value as an BigDecimal to preserve precision.
1 Comment
d11wtq
Why not use BigDecimal if you want to preserve precision?
There are already several solutions, but I'd like to add
>> "$ 10.80"[/[\d\.]+/].to_f #=> 10.8
Comments
If you know that it always has $ at the beginning, then just remove that, and a simple to_f will do.
"$ 10.00"[1..-1].to_f
1 Comment
Tyler K
This. Why would you complicate the problem any more than necessary?
Code that may be easier to understand for regex illiterates:
"$ 10.80".split(' ')[1].to_f
Comments
This soluiton matches any floating point number (including eg "$ .89") and preserves precision:
require 'bigdecimal'
s = "$ 10.80"
puts BigDecimal.new(s.match(/\d*\.?\d+/)[0]).to_s('F') # 10.8
Comments
you can even use split method.
"$ 10.80".split(' ')[1].to_f
