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118 packages found
Group values according to an indicator function.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- group
- groupby
- group-by
- async
- asynchronous
- aggregate
- partition
- View more
Generate a frequency table according to an indicator function.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- tabulate
- table
- frequency
- frequencies
- aggregate
- partition
- summarize
- View more
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
- View more
Convert a collection to an object whose keys are determined by a provided function and whose values are the collection values, iterating from right to left.
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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Test whether all elements in a collection pass a test implemented by a predicate function.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- test
- predicate
- every
- all
- array.every
- iterate
- collection
- View more
Split values into two groups according to a predicate function.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- group
- groupby
- group-by
- bifurcate
- bifurcation
- aggregate
- partition
- View more
Test if a value is an array-like object containing only truthy values.
Test if a value is an array-like object containing only falsy values.
Add one or more elements to the beginning of a collection.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- unshift
- append
- extend
- lengthen
- array
- typed array
- typed-array
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Perform a single-pass map-reduce operation against each element in an array and return the accumulated result.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- map
- transform
- map-reduce
- reduce
- reducer
- reduction
- array.map
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Apply a function against an accumulator and each element in an array and return the accumulated result.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- reduce
- reducer
- reduction
- array.reduce
- iterate
- aggregate
- accumulator
- View more
Generate a frequency table according to an indicator function.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- tabulate
- table
- frequency
- frequencies
- aggregate
- partition
- summarize
- View more
Test if a value is an array-like object where every element is between two values.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- comparison
- compare
- order
- interval
- closed
- open
- View more
Apply a function against an accumulator and each element in an array while iterating from right to left and return the accumulated result.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- reduce
- reducer
- reduction
- reduceright
- right
- array.reduce
- array.reduceright
- View more
Until a test condition is true, invoke a function for each element in a collection, iterating from right to left.
While a test condition is true, invoke a function for each element in a collection, iterating from right to left.
Invoke a function for each element in a collection, iterating from right to left.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- for
- each
- foreach
- right
- foreachright
- array.foreach
- iterate
- View more
Split values into two groups.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- group
- bifurcate
- bifurcation
- aggregate
- partition
- split
- array
- View more
Test whether at least one element in a collection passes a test implemented by a predicate function.