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49 lines
741 B
49 lines
741 B
#pragma once
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#include "combinations/tuple.hpp"
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namespace cl{
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template<typename a, typename ...c>
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class compose_t{
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// f . next
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a f;
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compose_t<c...> next;
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public:
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compose_t(a fn1, c ...oth)
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: f{fn1}
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, next{oth...}
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{}
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template<typename ...t>
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auto operator()(t ...Args){
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return next(f(Args...));
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}
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};
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template<typename a>
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class compose_t<a>{
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// f . g
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a f;
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public:
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compose_t(a fn1)
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: f{fn1}
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{}
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template<typename ...t>
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auto operator()(t ...Args){
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return f(Args...);
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}
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};
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template<typename a, typename ...c>
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auto compose(a fn1, c ...oth)
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{
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return function(compose_t(fn1,oth...));
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}
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template<typename a, typename b>
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auto operator*(a fn1, b fn2)
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{
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return compose(fn1, fn2);
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}
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}
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