forked from I2P_Developers/i2p.i2p
58 lines
961 B
C++
58 lines
961 B
C++
#ifndef NEITHER_TRAITS_HPP
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#define NEITHER_TRAITS_HPP
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namespace neither {
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template<class L, class R>
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struct Either;
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template<class T>
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struct Maybe;
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template<class L,class...Xs>
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auto isCopyable (L l, Xs...) -> L {
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return l;
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}
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template<class L, class R>
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auto ensureEither ( Either<L,R> const& e) -> Either<L,R> {
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return e;
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}
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template<class L, class R>
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auto ensureEither ( Either<L,R> && e) -> Either<L,R> {
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return e;
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}
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template<class L, class R>
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auto ensureEitherRight ( Either<L,R> const& e, R) -> Either<L, R> {
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return e;
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}
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template<class L, class R>
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auto ensureEitherRight ( Either<L,R>&& e, R&&) -> Either<L, R> {
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return e;
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}
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template<class L, class R>
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auto ensureEitherLeft ( Either<L,R> const& e, L) -> Either<L, R> {
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return e;
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}
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template<class L, class R>
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auto ensureEitherLeft ( Either<L,R>&& e, L&& ) -> Either<L, R> {
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return e;
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}
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template<class T>
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auto ensureMaybe ( Maybe<T> const& e) -> Maybe<T> {
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return e;
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}
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}
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#endif
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