I have the following string
id = "(48.88689971942316, 2.3380279541015625)"
is there any method to transform directly into an array [48.88689971942316, 2.3380279541015625] or should extract both parts and create the array (what I did.. but not very DRY)
tfyl
joss
id[1..-2].split(',').map {|e| e.to_f }
On Jan 28, 2007, at 11:15 AM, Josselin wrote:
I have the following string
id = "(48.88689971942316, 2.3380279541015625)"
is there any method to transform directly into an array [48.88689971942316, 2.3380279541015625] or should extract both parts and create the array (what I did.. but not very DRY)tfyl
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Julian 'Julik' Tarkhanov
please send all personal mail to
me at julik.nl
I have the following string
id = "(48.88689971942316, 2.3380279541015625)"
is there any method to transform directly into an array [48.88689971942316, 2.3380279541015625] or should extract both parts and create the array (what I did.. but not very DRY)
In this simple case you can do:
>> id = "(48.88689971942316, 2.3380279541015625)"
=> "(48.88689971942316, 2.3380279541015625)"
>> id.scan /\d+\.\d+/
=> ["48.88689971942316", "2.3380279541015625"]
>> id.scan(/\d+\.\d+/).map! {|x| x.to_f}
=> [48.8868997194232, 2.33802795410156]
It depends on the values that can occur in the string if this is sufficient (for example, the piece above does not take care of signs also does not recognize numbers without decimals). You can find plenty solutions for matching floating point numbers in the archives of this list / newsgroup.
Generally, if you get this string from some piece of external code, you want to parse it in some way to make sure it matches your expectations.
Kind regards
robert
On 28.01.2007 11:13, Josselin wrote:
Since, I dunno abt really DRY way of doing that, I would go with this:
class String
def to_farray
self.split(',').map {|part| part.gsub(/[()]/,"").to_f}
end
end
a = "(48.88689971942316, 2.3380279541015625)"
a.to_farray #=> [48.88689971942316, 2.3380279541015625]
On Sun, 2007-01-28 at 19:15 +0900, Josselin wrote:
I have the following string
id = "(48.88689971942316, 2.3380279541015625)"
is there any method to transform directly into an array
[48.88689971942316, 2.3380279541015625] or should extract both parts
and create the array (what I did.. but not very DRY)tfyl
joss
thanks Robert, better that what I originally wrote : (suppressing parenthesis then split on comma)
@point = id.tr('()', ' ').split(',')
On 2007-01-28 11:20:27 +0100, Robert Klemme <shortcutter@googlemail.com> said:
On 28.01.2007 11:13, Josselin wrote:
I have the following string
id = "(48.88689971942316, 2.3380279541015625)"
is there any method to transform directly into an array [48.88689971942316, 2.3380279541015625] or should extract both parts and create the array (what I did.. but not very DRY)In this simple case you can do:
>> id = "(48.88689971942316, 2.3380279541015625)"
=> "(48.88689971942316, 2.3380279541015625)"
>> id.scan /\d+\.\d+/
=> ["48.88689971942316", "2.3380279541015625"]
>> id.scan(/\d+\.\d+/).map! {|x| x.to_f}
=> [48.8868997194232, 2.33802795410156]It depends on the values that can occur in the string if this is sufficient (for example, the piece above does not take care of signs also does not recognize numbers without decimals). You can find plenty solutions for matching floating point numbers in the archives of this list / newsgroup.
Generally, if you get this string from some piece of external code, you want to parse it in some way to make sure it matches your expectations.
Kind regards
robert