CODEWITHSUNDEEP
schemeracket
user3220348
user3220348

Reputation: 27

How to compare partial string matches in racket?

I was wondering how one would compare strings for a partial match. For example,

to see if the phrase "example" is found in a sentence, say "this is an example"?

Upvotes: 3

Views: 1949

Answers (2)

uselpa
uselpa

Reputation: 18917

In Racket the general mechanism for this are regular expressions:

(regexp-match "example" "this is an example")
=> '("example")

(regexp-match-positions "example" "this is an example")
=> '((11 . 18))

Regular expressions are a slightly complex but very powerful way of processing strings. You can specify if the search string needs to be a separate word, search for repetitive patterns or character classes. See the excellent Racket doc for this.

Upvotes: 3

C. K. Young
C. K. Young

Reputation: 223013

Use string-contains from SRFI 13:

> (require srfi/13)
> (string-contains "this is an example" "example")
11
> (string-contains "this is an example" "hexample")
#f

Upvotes: 3

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