Stuff method

ruby-talk
1

Hi,

I missed the stuff function or method found in some languages so I added
this method to my Helpers mixin.

def stuff(str, substr, rplstr, prefix = '.*')
  r1 = Regexp.new("(#{prefix})(#{substr})(.*)")
  str.gsub(r1,'\1'+rplstr+'\3')
end

puts stuff('012-014640-001','-.','-X')

This works but if you know a better way please share so I can learn.

In particular it would be nicer I think if it worked like this:

new_str = '012-014640-001'.stuff('-.','-X')

Thanks,
  Carl

···

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2

when modifying core classes, yada yada yada...

class String
  def stuff(substr, rplstr, prefix = '.*')
     r1 = Regexp.new("(#{prefix})(#{substr})(.*)")
     self.gsub(r1,'\1'+rplstr+'\3')
  end
end

Michael Guterl

···

On Jan 23, 2008 7:23 PM, Carl Graff <cagraff@cox.net> wrote:

Hi,

I missed the stuff function or method found in some languages so I added
this method to my Helpers mixin.

def stuff(str, substr, rplstr, prefix = '.*')
r1 = Regexp.new("(#{prefix})(#{substr})(.*)")
str.gsub(r1,'\1'+rplstr+'\3')
end

puts stuff('012-014640-001','-.','-X')

This works but if you know a better way please share so I can learn.

In particular it would be nicer I think if it worked like this:

new_str = '012-014640-001'.stuff('-.','-X')

Try this if you want it to work like above. You should always be careful

3

Carl Graff wrote:

Hi,

I missed the stuff function or method found in some languages so I added
this method to my Helpers mixin.

def stuff(str, substr, rplstr, prefix = '.*')
  r1 = Regexp.new("(#{prefix})(#{substr})(.*)")
  str.gsub(r1,'\1'+rplstr+'\3')
end

puts stuff('012-014640-001','-.','-X')

This works but if you know a better way please share so I can learn.

In particular it would be nicer I think if it worked like this:

new_str = '012-014640-001'.stuff('-.','-X')

How about:

s = '012-014640-001'
puts s.gsub(/(.*)-.(.*)/, "\\1-X\\2")
puts s.gsub(/(.*)-.(.*)/) { "#{$1}-X#{$2}" }

···

--
       vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407

4

Michael Guterl wrote:

···

On Jan 23, 2008 7:23 PM, Carl Graff <cagraff@cox.net> wrote:

puts stuff('012-014640-001','-.','-X')

This works but if you know a better way please share so I can learn.

In particular it would be nicer I think if it worked like this:

new_str = '012-014640-001'.stuff('-.','-X')

Try this if you want it to work like above. You should always be careful

when modifying core classes, yada yada yada...

class String
  def stuff(substr, rplstr, prefix = '.*')
     r1 = Regexp.new("(#{prefix})(#{substr})(.*)")
     self.gsub(r1,'\1'+rplstr+'\3')
  end
end

Michael Guterl

Thanks Michael!

I guess the use of self is because gsub is itself a member of String.
Just out of curiosity I wonder if I can use
String.gsub(r1,'\1'+rplstr+'\3') as well - but even should that work I'm
sure it is unorthodox.

Carl

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