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Bind.cpp
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78 lines (61 loc) · 1.91 KB
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// =====================================================================================
// Bind.cpp
// =====================================================================================
module modern_cpp:bind;
namespace Bind {
static void test() {
using namespace std::placeholders; // for _1, _2, _3...
std::vector<double> numbers{ 1, 2, 3, 4, 5, 6 };
std::vector<double> result(6);
for (double n : numbers) {
std::cout << n << '\t';
}
std::cout << std::endl;
std::transform(
numbers.begin(),
numbers.end(),
result.begin(),
std::bind((double (*)(double, int)) std::pow, _1, 2)
);
// or
//auto g = std::bind((double (*)(double, int)) std::pow, _1, 2);
//std::transform(
// numbers.begin(),
// numbers.end(),
// result.begin(),
// g
//);
for (double n : result) {
std::cout << n << '\t';
}
std::cout << std::endl;
std::transform(
numbers.begin(),
numbers.end(),
result.begin(),
[](auto value) {
double result = std::pow(value, 3);
return result;
}
);
for (double n : result) {
std::cout << n << '\t';
}
// doesn't compile - ambiguous call to overloaded function std::pow
//std::transform(
// numbers.begin(),
// numbers.end(),
// result.begin(),
// std::bind(std::pow, std::placeholders::_1, 7.0)
//);
std::cout << std::endl;
}
}
void main_bind()
{
using namespace Bind;
test();
}
// =====================================================================================
// End-of-File
// =====================================================================================