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Function `std.algorithm.comparison.equal.equal`

Compares two ranges for equality. The ranges may have different element types, as long as pred(r1.front, r2.front) evaluates to bool. Performs Ο(min(r1.length, r2.length)) evaluations of pred.



bool equal(Range1, Range2)
(


  Range1 r1,


  Range2 r2


)


if (isInputRange!Range1 && isInputRange!Range2 && !(isInfinite!Range1 && isInfinite!Range2) && is(typeof(binaryFun!pred(r1.front, r2.front))));

At least one of the ranges must be finite. If one range involved is infinite, the result is (statically known to be) false.

If the two ranges are different kinds of UTF code unit (char, wchar, or dchar), then the arrays are compared using UTF decoding to avoid accidentally integer-promoting units.

Parameters

Name	Description
r1	The first range to be compared.
r2	The second range to be compared.

Returns

true if and only if the two ranges compare equal element for element, according to binary predicate pred.

Authors

Andrei Alexandrescu

License

Boost License 1.0.