ml::EnumKey Struct Reference

Utility for generating unique, stable string keys from enum values. More...

#include <EnumKey.h>

Static Public Member Functions
template<typename EnumType>
static std::string	get (EnumType value)
	Generate a unique string key for an enum value.
template<typename EnumType>
static std::string	typeKey ()
	Generate a unique string key for an enum type alone.

Detailed Description

Utility for generating unique, stable string keys from enum values.

EnumKey converts any scoped or unscoped enum value into a std::string key by combining the enum type's mangled name with the enum's integer value. The resulting key is:

• Guaranteed unique — different enum types produce different typeid().name() strings; different values produce different integers. No collision is possible.
• General purpose — works for any enum, not just event enums.
• Human-readable — keys like "N2ml5EventE::0" are debuggable.

Performance note

Keys are std::string — map lookups are slightly slower than size_t but collision-free and correct at any scale. If Malena grows to a scale where string lookup cost matters, switch to a hash-combine approach (e.g. boost::hash_combine) and benchmark.

Usage

std::string key = ml::EnumKey::get(ml::Event::CLICK);
std::string key = ml::EnumKey::get(MyManifest::Event::SCORE_CHANGED);

Note

Keys are stable within a single program run but are NOT guaranteed stable across runs, platforms, or compiler versions because typeid().name() is implementation-defined. Do not persist or serialize EnumKey values.

See also

EventsManager, Fireable, Unsubscribable

Definition at line 49 of file EnumKey.h.

Member Function Documentation

get()

template<typename EnumType>

std::string ml::EnumKey::get ( EnumType value )

inlinestatic

Generate a unique string key for an enum value.

Combines typeid(EnumType).name() with the integer value of value via "::". Guaranteed unique per (type, value) pair.

Template Parameters

EnumType

Any enum type (scoped or unscoped). Enforced at compile time via std::is_enum_v.

Parameters

value

The enum value to convert to a key.

Returns

A unique std::string key for this (type, value) pair.

Definition at line 63 of file EnumKey.h.

typeKey()

template<typename EnumType>

std::string ml::EnumKey::typeKey ( )

inlinestatic

Generate a unique string key for an enum type alone.

Returns a key representing the enum type without a specific value. Useful when grouping all events of a given enum type.

Template Parameters

EnumType

Any enum type.

Returns

The typeid name for EnumType.

Definition at line 83 of file EnumKey.h.

---

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

• Utilities/EnumKey.h