Exceptions indicated.
cats.monad.either
The Either monad implementation and helper functions for working with either related types.
Also commonly known as Error monad.
(require '[cats.monad.either :as either])
(either/right 1)
;; => nil
(either/left 1)
;; => nil
The Either monad implementation and helper functions
for working with either related types.
Also commonly known as Error monad.
(require '[cats.monad.either :as either])
(either/right 1)
;; => nil
(either/left 1)
;; => nil
branchclj/s
(branch e lf rf)Given an either value and two functions, if the either is a left apply the first function to the value it contains; if the either is a right apply the second function to its value.
Given an either value and two functions, if the either is a left apply the first function to the value it contains; if the either is a right apply the second function to its value.
branch-leftclj/s
(branch-left e lf)Given an either value and a function, if the either is a left, apply the function to the value it contains; if the either is a right, return it.
Given an either value and a function, if the either is a left, apply the function to the value it contains; if the either is a right, return it.
branch-rightclj/s
(branch-right e rf)Either-specific synonym for #'cats.core/bind
Given an either value and a function, if the either is a right, apply the function to the value it contains; if the either is a left, return it.
Either-specific synonym for #'cats.core/bind Given an either value and a function, if the either is a right, apply the function to the value it contains; if the either is a left, return it.
either?clj/s
(either? v)Return true in case of v is instance
of Either monad.
Return true in case of `v` is instance of Either monad.
first-leftclj/s
Given a collection of either, return the first value that is left
Given a collection of either, return the first value that is left
first-rightclj/s
Given a collection of either, return the first value that is right
Given a collection of either, return the first value that is right
invertclj/s
(invert e)Convert a left to a right or viceversa, preserving content.
Convert a left to a right or viceversa, preserving content.
left?clj/s
(left? v)Return true if v is an instance
of Left type.
Return true if `v` is an instance of Left type.
leftsclj/s
Given a collection of eithers, return only the values that are left.
Given a collection of eithers, return only the values that are left.
right?clj/s
(right? v)Return true if v is an instance
of Right type.
Return true if `v` is an instance of Right type.
rightsclj/s
Given a collection of eithers, return only the values that are right.
Given a collection of eithers, return only the values that are right.
try-eitherclj/smacro
(try-either & body)Try to evalute the body and return the result as an either. If an exception is thrown return the exception as a left, otherwise return the result as a right.
Try to evalute the body and return the result as an either. If an exception is thrown return the exception as a left, otherwise return the result as a right.
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