Any returns true if any element in src satisfies the predicate.

CloseIgnore closes c, ignoring any error.

Filter applies fn on all elements in src, producing a new slice containing the elements for which fn returned true, preserving the same order.

Find returns the first element where pred returns true.

FlatMap applies fn on all elements in src, producing a new slice with the results, in order.

Map applies fn on all elements in src, producing a new slice with the results, in order.

MapAndFilter applies fn on all elements in src, producing a new slice with the results, in order.

MapErr applies fn on all elements in src, producing a new slice with the results, in order.

MapKeys returns the keys of the map m.

MergeMaps merges all maps into a single map.

ToMap converts a slice to a map.

TransformMapKeys creates a new map with the same values as m, but with the keys transformed by fn.

TransformMapToSlice creates a new slice with the results of applying fn to each key-value pair in m.