count

Array-specialization of count with default predicate.

size_t count(T[] haystack, T[] needle)
@trusted
size_t
count
(
T
)
(
scope const T[] haystack
,
scope const T[] needle
)
size_t count(T[] haystack, T needle)
size_t count(T[] haystack)
bool startsWith(T[] haystack, T[] needle)
bool startsWith(T[] haystack, T needle)

Examples

// import std.algorithm.searching : count;
assert("".count("_") == 0);
assert("".count(" ") == 0);
assert(" ".count(" ") == 1);
assert("abc_abc".count("a") == 2);
assert("abc_abc".count("abc") == 2);
assert("_a_a_".count("_") == 3);
assert("_aaa_".count("a") == 3);
// assert("".count("") == 0);
// assert("_a_a_".count("") == 5);

assert("".count('_') == 0);
assert("abc_abc".count('a') == 2);
assert("_abc_abc_".count('_') == 3);

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