Difference between revisions of "PHP/native/BackedEnum"
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| Line 11: | Line 11: | ||
string|int $value; // pseudocode | string|int $value; // pseudocode | ||
| − | // | + | // OVERRIDEs UnitEnum::cases() |
| − | |||
static cases(): array; | static cases(): array; | ||
| + | // INHERITED from UnitEnum (unmodified): | ||
string $name; // pseudocode | string $name; // pseudocode | ||
} | } | ||
</syntaxhighlight> | </syntaxhighlight> | ||
The member-variables are labelled "pseudocode" because a normal interface can't declare member-variables. | The member-variables are labelled "pseudocode" because a normal interface can't declare member-variables. | ||
| + | ==cases()== | ||
| + | This method returns an array containing one element for each case in the enum: | ||
| + | * {{fmt/arg|array index}} (int) => {{fmt/arg|enum case-object}} (BackedEnum) | ||
| + | |||
| + | This list can then be used to build other arrays indexing the enum class's names, values, or calculated values. | ||
Revision as of 13:14, 25 August 2024
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BackedEnum pseudointerface manual page: The BackedEnum interface
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Note that this (pseudo)interface cannot actually be implemented as a standard class; it can only be (pseudo)implemented by declaring a backed enum.
Definition
interface BackedEnum extends UnitEnum {
static from(int|string $value): static;
static tryFrom(int|string $value): ?static;
string|int $value; // pseudocode
// OVERRIDEs UnitEnum::cases()
static cases(): array;
// INHERITED from UnitEnum (unmodified):
string $name; // pseudocode
}
The member-variables are labelled "pseudocode" because a normal interface can't declare member-variables.
cases()
This method returns an array containing one element for each case in the enum:
- <array index> (int) => <enum case-object> (BackedEnum)
This list can then be used to build other arrays indexing the enum class's names, values, or calculated values.