feat(utility): add bind_front for enum_switch partial application (#200) - #471
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ezralicodes wants to merge 4 commits into
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feat(utility): add bind_front for enum_switch partial application (#200)#471ezralicodes wants to merge 4 commits into
ezralicodes wants to merge 4 commits into
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…argye#200) Signed-off-by: ezralicodes <ezralicodes@users.noreply.github.com>
…argye#200) Signed-off-by: ezralicodes <ezralicodes@users.noreply.github.com>
…argye#200) Signed-off-by: ezralicodes <ezralicodes@users.noreply.github.com>
…argye#200) Signed-off-by: ezralicodes <ezralicodes@users.noreply.github.com>
Neargye
reviewed
Aug 15, 2026
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| * Zero is not reflected for flag enums. | ||
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| * GCC 16 with `-std=c++26` may miscompile string parsing that uses `find`/`remove_prefix` on flag names. `enum_flags_cast` uses an explicit token loop instead; see [#467](https://github.com/Neargye/magic_enum/issues/467). |
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This was never required and should be removed; internal documentation remains in the comments.
Neargye
reviewed
Aug 15, 2026
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| TEST_CASE("bind_front") { |
Owner
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Please also export |
Neargye
reviewed
Aug 15, 2026
| constexpr decltype(auto) operator()(CallArgs&&... call_args) const { | ||
| return std::apply( | ||
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| std::tuple_cat(bound_, |
Owner
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Please avoid tuple_cat here: it copies bound arguments into a temporary and breaks mutable callables, lvalue references, move-only values, and reference returns. Invoke the stored arguments directly via std::get, preserving the wrapper value category with &, const&, &&, and const&& overloads.
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Summary
Adds
magic_enum::bind_fronttomagic_enum_utility.hppas a C++17-friendly partial-application helper. Maintainer suggested this for nestedenum_switchuse cases on MSVC (#200).Also documents the GCC 16 C++26
enum_flags_castworkaround (#467).Test plan
bind_frontcase intest/test.cpp