32 lines
701 B
Scheme
32 lines
701 B
Scheme
#lang scheme
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(require web-server/http
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"lib.ss")
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(define (next-name i)
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(values (format "input_~a" i) (add1 i)))
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(define (input i)
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(let-values ([(w i) (next-name i)])
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(values (list `(input ([name ,w])))
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(lambda (env) (bindings-assq (string->bytes/utf-8 w) env))
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i)))
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(define input-string
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(cross
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(pure (lambda (bf)
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(bytes->string/utf-8 (binding:form-value bf))))
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input))
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(define input-int
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(cross
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(pure string->number)
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input-string))
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(define input-symbol
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(cross
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(pure string->symbol)
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input-string))
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(provide/contract
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[input-string (formlet/c string?)]
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[input-int (formlet/c integer?)]
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[input-symbol (formlet/c symbol?)]) |