iterate_selected

auto eve::iterate_selected = functor<iterate_selected_t>

inlineconstexpr

See also

eve::algo::for_each_selected

Header file

#include <eve/module/core.hpp>

Sometimes (for example in parsing) you need to perform scalar operations for each element that matches a predicate. This is a low level utility to help you do that. The predicate for iteration should return true if you want to break, false otherwise.

Callable Signatures

namespace eve
{
  auto iterate_selected
                    [relative_conditional_expr auto ignore]
    <logical_simd_value L>(L l, irregular_predicate<std::ptrdiff_t> auto&& f) -> bool;              // (1)
    <logical_simd_value L>(top_bits<L> l, irregular_predicate<std::ptrdiff_t> auto&& f) -> bool;    // (2)
                          (bool l, irregular_predicate<std::ptrdiff_t> auto&& f) -> bool;           // (3)
}

Parameters

• ignore - ignored elements are considered false
• l - logical value (either logical_simd_value, top_bits or just 1 bool).
• f - callback, that's invoked for every true index. Return false to break.

Return value

• true iff the user broke the exeuction (f returned true).