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118 packages found
Until a test condition is true, invoke a function for each element in a collection.
Test whether at least one element in a collection is truthy.
Add elements from one collection to the end of another collection.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- push
- append
- extend
- lengthen
- array
- typed array
- typed-array
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Add elements from one collection to the beginning of another collection.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- unshift
- prepend
- append
- extend
- lengthen
- array
- typed array
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While a test condition is true, invoke a function for each element in a collection.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- for
- while
- each
- foreach
- iterate
- collection
- array-like
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Test whether an object contains at least n properties (own and inherited) which pass a test implemented by a predicate function.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- test
- predicate
- any
- every
- all
- object.some
- object.every
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Generate a frequency table according to an indicator function.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- tabulate
- table
- frequency
- frequencies
- aggregate
- partition
- summarize
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Split values into two groups according to a predicate function.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- group
- groupby
- group-by
- bifurcate
- bifurcation
- asynchronous
- async
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Group values according to an indicator function.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- group
- groupby
- group-by
- async
- asynchronous
- aggregate
- partition
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Create a readable stream from a strided array-like object.
- stdlib
- utilities
- utility
- utils
- util
- node
- stream
- streams
- readable
- array
- array-like
- typed array
- typed
- strided
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Apply a function against an accumulator and each element in a collection and return the accumulated result, iterating from right to left.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- asynchronous
- async
- reduce
- right
- reduceright
- reducer
- reduction
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Invoke a function once for each element in a collection, iterating from right to left.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- for
- each
- right
- foreach
- foreachright
- array.foreach
- array.foreachright
- View more
Group values according to an indicator function and return group counts.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- group
- groupby
- group-by
- count
- count-by
- aggregate
- partition
- View more
Invoke a function for each element in a collection and update the collection in-place, iterating from right to left.
Apply a function against an accumulator and each element in a collection and return the accumulated result.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- asynchronous
- async
- reduce
- reducer
- reduction
- array.reduce
- iterate
- View more
Invoke a function for each element in a collection and update the collection in-place.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- inmap
- map
- array.map
- iterate
- in-place
- mutate
- collection
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Test whether all elements in a collection fail a test implemented by a predicate function.
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
Test whether all elements in a collection fail a test implemented by a predicate function, iterating from right to left.
Invoke a function once for each element in a collection.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- for
- each
- foreach
- array.foreach
- async
- asynchronous
- iterate
- View more