mismatch

Performs a parallel linear scan of arr and arr_against from [0 .. N$(RP) where N = min(arr.length, arr_against.length), returning the index of the first element in arr which does not match the corresponding element in arr_against or N if no mismatch occurs. Comparisons will be performed using the supplied predicate or '==' if none is supplied.

If the input arrays are not sorted in the same way, or they have different number of duplicate items, see bsubset.

size_t mismatch(T[] arr, T[] arr_against, Pred pred)
size_t mismatch(Buffer!(T) arr, Buffer!(T) arr_against, Pred pred)
size_t
mismatch
(
T
Pred = DefaultPredicates.IsEqual!(T)
)
(
ref Buffer!(T) arr
,
ref Buffer!(T) arr_against
,
Pred pred = Pred.init
)

Parameters

arr Buffer!(T): The array to evaluate.
arr_against Buffer!(T): The array to match against.
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 mismatch or N if the first N elements of arr and arr_against match, where N = min$(LP)arr.length, arr_against.length$(RP).

Examples

// result must not change from swapping argument order:
test!("==")(mismatch("abcxefg", "abcdefg"), 3);
test!("==")(mismatch("abcdefg", "abcxefg"), 3);

// result must not change from swapping argument order:
auto buffer1 = createBuffer("abcxefg");
auto buffer2 = createBuffer("abcdefg");
test!("==")( mismatch(buffer1, buffer2), 3 );
test!("==")( mismatch(buffer2, buffer1), 3 );

mismatch

Parameters

Return Value

Examples

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