string-hash, string-ci-hash - string hash functions

(import (rnrs))                     ;R6RS
(import (rnrs hashtables))          ;R6RS

(string-hash string)
(string-ci-hash string)

Returns an integer hash value for string, based on its current contents. It is used with make-hashtable(3scm).

string-hash

This hash function is suitable for use with string=?(3scm) as an equivalence function.

string-ci-hash

This hash function ignores case. It is suitable for use with string-ci=?(3scm) as an equivalence function.

Returns a single value; an integer.

(= (string-hash "Quux") (string-hash "Quux"))     =>  #t
(= (string-ci-hash "quux") (string-hash "QUUX"))  =>  #t or #f
(= (string-hash "foo") (string-hash "bar"))       =>  #t or #f

This procedure is used as an argument to make-hashtable(3scm).

This procedure can raise exceptions with the following condition types:

&assertion (R6RS)

The wrong number of arguments was passed or an argument was outside its domain.

make-hashtable(3scm)

R6RS, SRFI-69

The first Scheme report to include this procedure was R6RS for its new hashtable library. There is a similar procedure in SRFI-69.

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