xtd::expressions::equal< left_t, right_t > Struct Template Reference

Inheritance diagram for xtd::expressions::equal< left_t, right_t >:

Definition

template<typename left_t, typename right_t>
struct xtd::expressions::equal< left_t, right_t >

The xtd::expressions::equal is the equal expression.

Namespace

xtd::expressions

Header

#include <xtd/expressions/equal>

Library

xtd.core

Examples

The following example shows how to use xtd::expressions::expression::equal.

#include <xtd/xtd>
 
auto main() -> int {
  // auto equal1 = [](auto&& _) {return _ == 10;};
  auto equal1 = _ == 10;
  println("equal1 result => {}", equal1(42));
  auto equal2 = expression::equal(_, 10);
  println("equal2 result => {}", equal2(42));
  println();
  // auto equal3 = [](auto&& _1, auto&& _2) {return _1 == _2;};
  auto equal3 = _1 == _2;
  println("equal3 result => {}", equal3(42, 42));
  auto equal4 = expression::equal(_1, _2);
  println("equal4 result => {}", equal4(42, 42));
}
 
// This code produces the following output :
//
// equal1 result => false
// equal2 result => false
//
// equal3 result => true
// equal4 result => true

Remarks

The xtd::expressions::equal struct is used by xtd::expressions::expression::equal expression.

Public Fields
static constexpr operator_precedence	precedence
	The operator precedence. That contains one of xtd::expressions::operator_precedence values.

Public Constructors
constexpr	equal ()=default
	Initialize a new xtd::expressions::equal object.
constexpr	equal (left_t left, right_t right)
	Initialize a new xtd::expressions::equal object with specified left and right operands.

Public Operators
template<typename... args_t>
constexpr auto	operator() (args_t &&... args) const
	Equal to the specified arguments.

Additional Inherited Members

Constructor & Destructor Documentation

equal() [1/2]

template<typename left_t, typename right_t>

xtd::expressions::equal< left_t, right_t >::equal ( )

constexprdefault

Initialize a new xtd::expressions::equal object.

equal() [2/2]

template<typename left_t, typename right_t>

xtd::expressions::equal< left_t, right_t >::equal ( left_t left, right_t right )

inlineconstexpr

Initialize a new xtd::expressions::equal object with specified left and right operands.

Parameters

left	The left operand.
right	The right operand.

Member Function Documentation

operator()()

template<typename left_t, typename right_t>

template<typename... args_t>

auto xtd::expressions::equal< left_t, right_t >::operator() ( args_t &&... args ) const

inlineconstexpr

Equal to the specified arguments.

Parameters

args	the arguments to equal.

Returns

The result of equal.

Member Data Documentation

precedence

template<typename left_t, typename right_t>

operator_precedence xtd::expressions::equal< left_t, right_t >::precedence

staticconstexpr

The operator precedence. That contains one of xtd::expressions::operator_precedence values.

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The documentation for this struct was generated from the following file:

• xtd.core/include/xtd/expressions/equal.hpp