pub enum MapKey {
    Bool(bool),
    I32(i32),
    I64(i64),
    U32(u32),
    U64(u64),
    String(String),
}
Expand description

A dynamically-typed key for a protobuf map.

Variants§

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Bool(bool)

A boolean value, encoded as the bool protobuf type.

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I32(i32)

A 32-bit signed integer, encoded as one of the int32, sint32 or sfixed32 protobuf types.

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I64(i64)

A 64-bit signed integer, encoded as one of the int64, sint64 or sfixed64 protobuf types.

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U32(u32)

A 32-bit unsigned integer, encoded as one of the uint32 or ufixed32 protobuf types.

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U64(u64)

A 64-bit unsigned integer, encoded as one of the uint64 or ufixed64 protobuf types.

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String(String)

A string, encoded as the string protobuf type.

Implementations§

Returns the default value for the given protobuf type kind.

Panics

Panics if kind is not a valid map key type (an integral type or string).

Returns true if this is the default value for the given protobuf type kind.

Panics

Panics if kind is not a valid map key type (an integral type or string).

Returns true if this map key can be encoded as the given Kind.

Returns the value if it is a MapKey::Bool, or None if it is any other type.

Returns a mutable reference to the value if it is a MapKey::Bool, or None if it is any other type.

Returns the value if it is a MapKey::U32, or None if it is any other type.

Returns a mutable reference to the value if it is a MapKey::U32, or None if it is any other type.

Returns the value if it is a MapKey::U64, or None if it is any other type.

Returns a mutable reference to the value if it is a MapKey::U64, or None if it is any other type.

Returns the value if it is a MapKey::I64, or None if it is any other type.

Returns a mutable reference to the value if it is a MapKey::I64, or None if it is any other type.

Returns the value if it is a MapKey::I32, or None if it is any other type.

Returns a mutable reference to the value if it is a MapKey::I32, or None if it is any other type.

Returns the value if it is a MapKey::String, or None if it is any other type.

Returns a mutable reference to the value if it is a MapKey::String, or None if it is any other type.

Trait Implementations§

Returns a copy of the value. Read more
Performs copy-assignment from source. Read more
Formats the value using the given formatter. Read more
Converts to this type from the input type.
Feeds this value into the given Hasher. Read more
Feeds a slice of this type into the given Hasher. Read more
This method returns an Ordering between self and other. Read more
Compares and returns the maximum of two values. Read more
Compares and returns the minimum of two values. Read more
Restrict a value to a certain interval. Read more
This method tests for self and other values to be equal, and is used by ==.
This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
This method returns an ordering between self and other values if one exists. Read more
This method tests less than (for self and other) and is used by the < operator. Read more
This method tests less than or equal to (for self and other) and is used by the <= operator. Read more
This method tests greater than (for self and other) and is used by the > operator. Read more
This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more

Auto Trait Implementations§

Blanket Implementations§

Gets the TypeId of self. Read more
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The resulting type after obtaining ownership.
Creates owned data from borrowed data, usually by cloning. Read more
Uses borrowed data to replace owned data, usually by cloning. Read more
The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion error.
Performs the conversion.