12 lines
298 B
Racket
12 lines
298 B
Racket
#lang racket
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;; Racket can use Unicode in identifier names
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(define √ sqrt)
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(√ 256) ; -> 16
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;; and in fact the standard language makes use of some of these
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(λ(x) x) ; -> an identity function
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;; The required binding:
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(define Δ 1)
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(set! Δ (add1 Δ))
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(printf "Δ = ~s\n" Δ) ; prints "Δ = 2"
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