etl/docs/utilities/static_assert.md

title
static assert

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Macro

ETL_STATIC_ASSERT

Either maps on to the built-in static_assert or supplies a suitable definition.

ETL_STATIC_ASSERT(condition, message);

Example

template <typename T>
void Do_This(T value)
{
  ETL_STATIC_ASSERT(etl::is_integral<T>::value, "Not an integral type");
}