29 lines
715 B
Plaintext
29 lines
715 B
Plaintext
#include "share/atspre_staload.hats"
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fn {t1, t2, t3 : t@ype}
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compose (f : t2 -<cloref1> t3,
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g : t1 -<cloref1> t2) : t1 -<cloref1> t3 =
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lam x => f (g (x))
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fn
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compose_char2int2double
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(f : int -<cloref1> double,
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g : char -<cloref1> int) :
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char -<cloref1> double =
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compose<char, int, double> (f, g)
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implement
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main0 () =
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let
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val one_hundred = 100.0
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val char_zero = '0'
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val f = (lam y =<cloref1> add_double_int (one_hundred, y))
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val g = (lam x =<cloref1> char2i x - char2i char_zero)
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val z = compose_char2int2double (f, g) ('5')
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val fg = compose_char2int2double (f, g)
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val w = fg ('7')
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in
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println! (z : double);
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println! (w : double)
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end
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