The Monoid Class

hymn.types.monoid - base monoid class

class hymn.types.monoid.Monoid

Bases: object

the monoid class

types with an associative binary operation that has an identity

append(other)

an associative operation for monoid

classmethod concat(seq)

fold a list using the monoid

empty

the identity of append()

hymn.types.monoid.append(*monoids)

the associative operation of monoid

Hy Specific API

Functions

<>

alias of append()

Examples

append() adds up the values, while handling empty gracefully, <> is an alias of append()

=> (import [hymn.types.maybe [Just Nothing]])
=> (import [hymn.types.monoid [<> append]])
=> (append (Just "Cuddles ") Nothing (Just "the ") Nothing (Just "Hacker"))
Just('Cuddles the Hacker')
=> (<> (Just "Cuddles ") Nothing (Just "the ") Nothing (Just "Hacker"))
Just('Cuddles the Hacker')