enable_if< bool, Type > Struct Template Reference

Define a member typedef only if a boolean constant is true. More...

#include <enable_if.hpp>

Detailed Description

template<bool, typename Type = void>
struct etl::enable_if< bool, Type >

Define a member typedef only if a boolean constant is true.

// SPDX-License-Identifier: BSL-1.0
// SPDX-FileCopyrightText: Copyright (C) 2019 Tobias Hienzsch
 
#if defined(TETL_ENABLE_CXX_MODULES)
import etl;
#else
    #include <etl/cstdint.hpp>
    #include <etl/type_traits.hpp>
#endif
 
namespace {
 
template <typename T>
    requires(etl::is_integral_v<T>)
auto func(T val) -> int
{
    return static_cast<int>(val);
}
 
auto func(float val) -> float
{
    return val;
}
 
} // namespace
 
auto main() -> int
{
    func(42);               // Calls template
    func(etl::uint16_t{1}); // Calls template
    func(3.0F);             // Does not call template
    return 0;
}

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

• include/etl/_type_traits/enable_if.hpp