stringslice

See tests for example usage.

Adds functions for manipulating string slices:

• Sort (does not mutate)
• SortBy (Sort, but supply your own sorting function)
• Uniq (currently implies also sorted)
• SortedUniq (only Uniq on an already-sorted string slice)
• Map (iterate elements and call a function on each element, replacing the element with the return value)
• Each (iterate elements and call a function on each element)
• Reduce (aka inject)
• Subtract (subtract one slice's elements from another slice and return the result)
• Add (add two slices together and return the result)
• Contains
• Index (assumes not sorted, O(n) time)
• SortedIndex (index operation on a sorted slice, O(log(n)) operating time)
• First (first element in slice)
• Last (last element in slice)
• Any (true if len > 0)
• ToStringSlice (converts anything like a []string slice to a []string slice, eg type MyString string and []MyString)
• Filter (select elements from the slice based on a selection function)
• DeleteIf (reject elements from the slice if they match a selection function)

Functions for operations on string slices that represent sets:

• Difference
• Union
• Intersect
• Compare (allows custom set operations)

Functions that operate on maps and return string slices:

• GetKeys
• GetValues

Future support; perhaps (let me know if you'd like to see one of these – @ssoroka on twitter):

• Pop
• Push
• Shift
• Unshift
• Reverse

usage

Functions are available as one-off functions,

  s := []string{"echo", "alpha", "bravo", "delta", "charlie", "Charlie"}

  s2 := stringslice.Map(strings.ToUpper)

  // s2 == []string{"ECHO", "ALPHA", "BRAVO", "DELTA", "CHARLIE", "CHARLIE"}

or as a chainable StringSlice object

  s := []string{"echo", "alpha", "bravo", "delta", "charlie", "Charlie"}

  s2 := stringslice.New(s).Sort().Map(strings.ToUpper).Subtract("ALPHA").Uniq().Slice()

  // s2 == []string{"BRAVO", "CHARLIE", "DELTA", "ECHO"}

See tests for more usage.

install

go get github.com/ssoroka/stringslice