Foldable

The Foldable typeclass is used for data structures that can be folded. More...

Classes
struct	boost::mpl11::foldr< f, state, structure >
	Right-associative fold of a structure using a binary operation. More...
struct	boost::mpl11::foldr1< f, structure >
	Variant of foldr that has no base case, and thus may only be applied to non-empty structures. More...
struct	boost::mpl11::foldl< f, state, structure >
	Left-associative fold of a structure using a binary operation. More...
struct	boost::mpl11::foldl1< f, structure >
	Variant of foldl that has no base case, and thus may only be applied to non-empty structures. More...
struct	boost::mpl11::all< predicate, structure >
	Returns whether all the elements of the structure satisfy the predicate. More...
struct	boost::mpl11::all_of< structure >
	Equivalent to all<lift<id>, structure>. More...
struct	boost::mpl11::none< predicate, structure >
	Returns whether none of the elements of the structure satisfy the predicate. More...
struct	boost::mpl11::none_of< structure >
	Equivalent to none<lift<id>, structure>. More...
struct	boost::mpl11::any< predicate, structure >
	Returns whether any element of the structure satisfies the predicate. More...
struct	boost::mpl11::any_of< structure >
	Equivalent to any<lift<id>, structure>. More...
struct	boost::mpl11::sum< structure >
	Compute the sum of the elements of a structure. More...
struct	boost::mpl11::product< structure >
	Compute the product of the elements of a structure. More...
struct	boost::mpl11::maximum_by< predicate, structure >
	The largest element of a non-empty structure with respect to the given predicate. More...
struct	boost::mpl11::maximum< structure >
	Returns the largest element of a non-empty structure. More...
struct	boost::mpl11::minimum_by< predicate, structure >
	The least element of a non-empty structure with respect to the given predicate. More...
struct	boost::mpl11::minimum< structure >
	Returns the least element of a non-empty structure. More...
struct	boost::mpl11::unpack< f, structure >
	Invokes a metafunction class with the contents of a structure. More...

Detailed Description

The Foldable typeclass is used for data structures that can be folded.

Methods

foldl, foldl1, foldr and foldr1.

Minimal complete definition

foldl and foldr.

Todo:

• Consider removing unpack or moving it elsewhere, maybe Functional.