[英]How do I load library to support hashtable in R5RS language (DrScheme)?
Looks like R5RS language in DrScheme does not come with hashtable library.. 看起来DrScheme中的R5RS语言没有哈希表库。
when I run (make-hash-table) it throws an error... 当我运行(make-hash-table)时会引发错误...
Pretty Big has support for hashtable but does not support mutable pairs.. Pretty Big支持哈希表,但不支持可变对。
so I am stuck making one of them work for me .. 所以我坚持让他们中的一个为我工作..
How do I add support for hashtable in R5RS? 如何在R5RS中添加对哈希表的支持?
thanks 谢谢
I wasn't sure of how to do this either, but found how to import a module in r5rs: 我也不确定如何执行此操作,但发现如何在r5rs中导入模块:
(#%require scheme)
then... 然后...
(define h (make-hash))
etc... 等等...
If you don't care about what "language" you use, you might just use R6RS. 如果您不关心使用什么“语言”,则可以只使用R6RS。 Here is how to get what you want in R6RS:
这是在R6RS中获得所需内容的方法:
#!r6rs
(import (rnrs)
(rnrs mutable-pairs))
(define foo (make-eqv-hashtable))
(define bar (list 'a 'b))
(write bar) (newline)
(set-car! bar 'Z)
(write bar)
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