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improve iota_view's iterator's binary operator+ (LWG-3580) #2417

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Dec 17, 2021
Merged

improve iota_view's iterator's binary operator+ (LWG-3580) #2417

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41f2a71
improve iota_view's iterator's binary operator+
fsb4000 Dec 14, 2021
de0c629
correct implementation
fsb4000 Dec 14, 2021
2d520d7
Fix conditional noexcepts
CaseyCarter Dec 16, 2021
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10 changes: 6 additions & 4 deletions stl/inc/ranges
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Original file line number Diff line number Diff line change
Expand Up @@ -1140,16 +1140,18 @@ namespace ranges {
// clang-format on

_NODISCARD friend constexpr _Ioterator operator+(_Ioterator _It, const difference_type _Off) noexcept(
noexcept(static_cast<_Wi>(_It._Current + _Off))) /* strengthened */ requires _Advanceable<_Wi> {
return _Ioterator{static_cast<_Wi>(_It._Current + _Off)};
noexcept(_It._Current += _Off)) /* strengthened */ requires _Advanceable<_Wi> {
_It._Current += _Off;
return _It;
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}
_NODISCARD friend constexpr _Ioterator operator+(const difference_type _Off, _Ioterator _It) noexcept(
noexcept(static_cast<_Wi>(_It._Current + _Off))) /* strengthened */ requires _Advanceable<_Wi> {
return _Ioterator{static_cast<_Wi>(_It._Current + _Off)};
}
_NODISCARD friend constexpr _Ioterator operator-(_Ioterator _It, const difference_type _Off) noexcept(
noexcept(static_cast<_Wi>(_It._Current - _Off))) /* strengthened */ requires _Advanceable<_Wi> {
return _Ioterator{static_cast<_Wi>(_It._Current - _Off)};
noexcept(_It._Current -= _Off)) /* strengthened */ requires _Advanceable<_Wi> {
_It._Current -= _Off;
return _It;
}
_NODISCARD friend constexpr difference_type
operator-(const _Ioterator& _Left, const _Ioterator& _Right) noexcept(
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