CODEWITHSUNDEEP
rebolred-lang
user310291
user310291

Reputation: 38228

rebol / red parse with [to end] rule

I'm trying to understand parse from the ground up so don't tell me to use split in this case.

sentence: "This is a sentence"

parse sentence [
    any [
        [any space] copy text [to space | to end] skip
        (print text)
    ]
 ]

Why do I not get the last word in the sentence, and only:

This
is
a

Did the [to end] not work?

Upvotes: 3

Views: 106

Answers (2)

sqlab
sqlab

Reputation: 6436

An alternative solution without to and end

sentence: "This is a sentence"
space:  charset " "
chars: complement space

parse sentence [
    any [
       any space 
       copy text some chars
       (print text) 
    ]
]

In Rebol2 you have to use parse/all, if you deal with strings, but the most simple solution in Rebol2 for splitting is 

>> parse sentence none
== ["This" "is" "a" "sentence"]

Upvotes: 1

rebolek
rebolek

Reputation: 1301

to end did work, but then you have skip there and you're already at the end, so skip fails. See this:

>> parse sentence [any [[any space] copy text [to space | to end ] (print text) skip]]
This
is
a
sentence

Upvotes: 4

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