Simple question

ruby-talk
1

hello

I have a string like this

string = "hello -a apple -b butterfly -c cat -d dophin"

i would like to parse the string based on some reg exp so that i can
store it in a variable like so.

valuea = "apple"
valueb = "butterfly"
valuec = "cat"
valued = "dophin"

Could someone help me out.

2

anitawa wrote:

hello

I have a string like this

string = "hello -a apple -b butterfly -c cat -d dophin"

i would like to parse the string based on some reg exp so that i can
store it in a variable like so.

valuea = "apple"
valueb = "butterfly"
valuec = "cat"
valued = "dophin"

Could someone help me out.

Are you parsing a command line? If so, you might want to consider http://www.ruby-doc.org/stdlib/libdoc/optparse/rdoc/index.html

cheers,
mick

3

anitawa wrote:

hello

I have a string like this

string = "hello -a apple -b butterfly -c cat -d dophin"

i would like to parse the string based on some reg exp so that i can
store it in a variable like so.

valuea = "apple"
valueb = "butterfly"
valuec = "cat"
valued = "dophin"

Here you go, but I just had to make one change. Instead of having variables
valuea, valueb, valuec..., I put them in a hash called value. Is it absolutely
necessary to have them as you posted?

string.split(/\s-/).each do |v|
  v = v.split(/\s/)
  value[ v[0] ] = v[1] if v.size == 2
end

So you would have

value["a"] = "apple"
value["b"] = "butterfly"
etc...

- --
  Travis Warlick

  "Programming in Java is like dealing with your mom --
   it's kind, forgiving, and gently chastising.
   Programming in C++ is like dealing with a disgruntled
   girlfriend -- it's cold, unforgiving, and doesn't tell
   you what you've done wrong."

4

or a gem called 'OptionParser'. It's like optparse, only, I find, a lot simpler.

ยทยทยท

On Jul 19, 2007, at 10:19 PM, Michael Hollins wrote:

anitawa wrote:

hello
I have a string like this
string = "hello -a apple -b butterfly -c cat -d dophin"
i would like to parse the string based on some reg exp so that i can
store it in a variable like so.
valuea = "apple"
valueb = "butterfly"
valuec = "cat"
valued = "dophin"
Could someone help me out.

Are you parsing a command line? If so, you might want to consider http://www.ruby-doc.org/stdlib/libdoc/optparse/rdoc/index.html

cheers,
mick

---------------------------------------------------------------|
~Ari
"I don't suffer from insanity. I enjoy every minute of it" --1337est man alive