From Cppreference
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| template< class T >
bool operator<=( const T& lhs, const T& rhs );
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Given a user-defined operator< for objects of type T, implements the usual semantics of operator<=.
[edit] Parameters
| lhs
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-
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left-hand argument
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| rhs
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-
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right-hand argument
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[edit] Return value
Returns true if lhs is less or equal rhs, false otherwise.
[edit] Equivalent function
namespace rel_ops {
template< class T >
bool operator>( const T& lhs, const T& rhs ) {
return !(rhs<lhs);
}
} |
[edit] Example
#include <iostream>
#include <utility>
struct Foo {
int n;
};
bool operator<(const Foo& lhs, const Foo& rhs)
{
return lhs.n < rhs.n;
}
int main()
{
Foo f1 = {1};
Foo f2 = {2};
using namespace std::rel_ops;
if(f1 <= f2)
std::cout << "Less or equal\n";
}Output:
[edit] See also
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automatically generated operator!= based on user-defined operator==
(function template)
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automatically generated operator> based on user-defined operator<
(function template)
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automatically generated operator<= based on user-defined operator<
(function template)
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