ocean ~v6.x.x (2022-01-14T16:08:36.1174149)

rfind

ocean core array Search

Performs a linear scan of haystack from $(LP)haystack.length .. 0], returning the index of the first element matching needle, or haystack.length if no match was found. Comparisons will be performed using the supplied predicate or '==' if none is supplied.

  1. size_t rfind(T[] haystack, T needle, Pred pred)
  2. size_t rfind(T[] haystack, T[] needle, Pred pred)
  3. size_t rfind(Buffer!(T) haystack, T[] needle, Pred pred)
  4. size_t rfind(Buffer!(T) haystack, T needle, Pred pred)
    size_t
    rfind
    (
    T
    Pred = DefaultPredicates.IsEqual!(T)
    )
    (
    ref Buffer!(T) haystack
    ,
    in T needle
    ,
    Pred pred = Pred.init
    )

Parameters

needle T

The needletern to search for.

pred Pred

The evaluation predicate, which should return true if e1 is equal to e2 and false if not. This predicate may be any callable type.

Return Value

Type: size_t

The index of the first match or haystack.length if no match was found.

Examples

auto buffer = createBuffer([ 1, 2, 3 ]);
test!("==")(rfind(buffer, [ 2, 3 ]), 1);
test!("==")(rfind([ 1, 2, 3 ], 1), 0);
test!("==")(rfind([ 1, 2, 3 ], [ 1, 2 ]), 0);
auto buffer = createBuffer([ 1, 2, 3 ]);
test!("==")(rfind(buffer, 1), 0);

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ocean core array Search aliasesfunctions

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