levenshteinDistance

size_t levenshteinDistance(alias  equals = (a, b)  =>  a ==  b,  Range1,  Range2)(Range1 s,  Range2 t) if (isForwardRange!(Range1)  &&  isForwardRange!(Range2))

Returns the Levenshtein distance between s and t. The Levenshtein distance computes the minimal amount of edit operations necessary to transform s into t. Performs s.length * t.length evaluations of equals and occupies min(s.length, t.length) storage.

Parameters

`equals`	The binary predicate to compare the elements of the two ranges.
`s`	The original range.
`t`	The transformation target

Returns

The minimal number of edits to transform s into t.

Does not allocate GC memory.

size_t levenshteinDistance(alias  equals = (a, b)  =>  a ==  b,  Range1,  Range2)(auto  ref  Range1 s,  auto  ref  Range2 t) if (isConvertibleToString!Range1 ||  isConvertibleToString!Range2)

ditto