v/vlib/v/tests/generics_array_delete_test.v

struct Set<T> {
mut:
	field []T
}

fn (mut s Set<T>) add<T>(value T) bool {
	mut result := false

	if value !in s.field {
		s.field << value
		result = true
	}

	return result
}

fn (mut s Set<T>) remove<T>(value T) bool {
	mut result := false

	if value in s.field {
		ndx := s.field.index(value)
		s.field.delete(ndx)
		result = true
	}

	return result
}

fn test_generics_array_delete() {
	// int
	mut set1 := Set<int>{}

	mut added := set1.add(4)
	println(added)
	assert added

	added = set1.add(3)
	println(added)
	assert added

	added = set1.add(3)
	println(added)
	assert !added

	println(set1)
	mut removed := set1.remove(4)
	println(removed)
	assert removed

	// f64
	mut set2 := Set<f64>{}

	added = set2.add(4.4)
	println(added)
	assert added

	added = set2.add(3.3)
	println(added)
	assert added

	added = set2.add(3.3)
	println(added)
	assert !added

	println(set2)
	removed = set2.remove(4.4)
	println(removed)
	assert removed

	// string
	mut set3 := Set<string>{}

	added = set3.add('aaa')
	println(added)
	assert added

	added = set3.add('bbb')
	println(added)
	assert added

	added = set3.add('bbb')
	println(added)
	assert !added

	println(set3)
	removed = set3.remove('aaa')
	println(removed)
	assert removed
}