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June 2018 Update

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This commit is contained in:
Ingy döt Net 2018-06-22 20:57:24 +00:00
parent ba8067c3b7
commit 22f33d4004
5278 changed files with 84726 additions and 14379 deletions
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10
Task/Y-combinator/Elena/y-combinator.elena
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@ -3,14 +3,14 @@ import extensions.
singleton YCombinator
{
fix : func
= (:f)[(:x)[ x eval:x ] eval(:g)[ f eval(:x)[(g eval:g) eval:x] ]] eval:func.
= (:f)[(:x)[ x(x) ] eval(:g)[ f eval(:x)[(g(g)) eval:x] ]] eval:func.
}
program =
[
var fib := YCombinator fix(:f)((:i)( (i <= 1) ifTrue:[^i] ifFalse:[^f eval(i-1) + f eval(i-2) ] )).
var fact := YCombinator fix(:f)((:i)((i == 0) ifTrue:[^1] ifFalse:[^f eval(i-1) * i] )).
var fib := YCombinator fix(:f)((:i)( (i <= 1) ifTrue:[^i] ifFalse:[^f(i-1) + f(i-2) ] )).
var fact := YCombinator fix(:f)((:i)((i == 0) ifTrue:[^1] ifFalse:[^f(i-1) * i] )).
console printLine("fib(10)=",fib eval(10)).
console printLine("fact(10)=",fact eval(10)).
console printLine("fib(10)=",fib(10)).
console printLine("fact(10)=",fact(10)).
].