[X] My Assistant

[curioComp]

I'm trying to write a function that gives me the second word in a sentence, what I have is getword - but it gives me only the first word, and I don't know what to change to get only the second word from the sentece/line in a file.

CODE

getword :: String -> String
getword "" = []
getword (x:xs)
| (x == ' ') = []
| otherwise = [x] ++ (getword xs)

All my sentences are like this: push constant 10
Can I use the same thing to get the third element that is a number?
Thank you!

[Raynes]

CODE

getSecondWord = head . tail . words

CODE

*Main> getSecondWord "I smell Haskell on your breath."
"smell"

To get the third element (which appears to be the last element in each of your sentences, you would do something like this:

CODE

getLastWord = last . words

CODE

*Main> getLastWord "I smell Haskell on your breath."
"breath."

Have fun!

[curioComp]

Than you! It was very helpfull, but actually, the third element in my sentences are always numbers, but this:

CODE

getLastWord = last . words

It's not good for numbers, just for words...
Is it posible to write something like this?

CODE

getLastWord = last . numbers

Thank you so much in advance.

[Raynes]

Than you! It was very helpfull, but actually, the third element in my sentences are always numbers, but this:

CODE

getLastWord = last . words

It's not good for numbers, just for words...
Is it posible to write something like this?

CODE

getLastWord = last . numbers

Thank you so much in advance.

As long as the number is separated from the second and forth word by a space, like so: "word1 word2 3 word4", the 'words' function will work. What the 'words' function does is split up a string at every space, and eliminates the space. The word function will work just fine for you.

CODE

words "word1 word2 3 word4 word5" -- This returns ["word1","word2","3","word4","word5"]

On an unrelated note, I would really appreciate it if you could click the "this post was helpful" link on any of my posts that you find helpful. You don't have to, but it would be really awesome if you did!

Good luck.

This post has been edited by Raynes: 12 Nov, 2009 - 05:19 PM