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Test whether all elements in a collection fail a test implemented by a predicate function, iterating from right to left.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- test
- predicate
- none
- noneright
- every
- all
- array.every
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Test whether at least one element in a collection passes a test implemented by a predicate function, iterating from right to left.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- test
- predicate
- any
- anyright
- array.some
- iterate
- collection
- View more
Test whether all elements in a collection fail a test implemented by a predicate function.
Test whether all elements in a collection pass a test implemented by a predicate function, iterating from right to left.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- test
- predicate
- every
- all
- everyright
- array.every
- iterate
- View more
Test whether a collection contains at least `n` elements which pass a test implemented by a predicate function.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- test
- predicate
- any
- every
- all
- array.some
- array.every
- View more
Test whether a collection contains at least `n` elements which pass a test implemented by a predicate function, iterating from right to left.
Composable [type predicates](https://www.typescriptlang.org/docs/handbook/2/narrowing.html#using-type-predicates) for runtime type checking.
Test whether all elements in a collection fail a test implemented by a predicate function.
Test whether all elements in a collection pass a test implemented by a predicate function.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- async
- asynchronous
- test
- predicate
- every
- all
- array.every
- View more
Test whether at least one element in a collection passes a test implemented by a predicate function.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- async
- asynchronous
- test
- predicate
- any
- array.some
- iterate
- View more
Test whether all elements in a collection fail a test implemented by a predicate function, iterating from right to left.
Test whether a collection contains at least `n` elements which pass a test implemented by a predicate function, iterating from right to left.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- async
- asynchronous
- test
- predicate
- some
- right
- array.some
- View more
Test whether at least one element in a collection passes a test implemented by a predicate function, iterating from right to left.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- async
- asynchronous
- test
- predicate
- any
- right
- array.some
- View more
Test whether all elements in a collection pass a test implemented by a predicate function, iterating from right to left.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- async
- asynchronous
- test
- predicate
- every
- all
- everyright
- View more
Test whether a collection contains `n` elements which pass a test implemented by a predicate function.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- async
- asynchronous
- test
- predicate
- some
- array.some
- every
- View more
Predicate that returns true for "falsy" values.
Functions to check inputs (i.e. predicates)
Function argument validation for humans
- type
- types
- check
- checking
- guard
- guards
- assert
- assertion
- predicate
- predicates
- is
- validate
- validation
- utility
- View more
A tool to validate and cast values in Javascript by given schema, with customizable predictors and castors.
A collection of common runtime predicates that TypeScript actually understands.