A representation of the Spanner ENUM type: a protobuf enumeration.
A ProtoEnum<E> can be implicitly constructed from, and explicitly converted to an E. Values can be copied, assigned, compared for equality, and streamed.
Example
Given a proto definition enum Color { RED = 0; BLUE = 1; GREEN = 2; }:
auto e = spanner::ProtoEnum<Color>(BLUE);
assert(Color(e) == BLUE);
Constructors
ProtoEnum()
The default value is the first listed in the enum's definition.
ProtoEnum(enum_type)
Implicit construction from the enum type.
Parameter
Name
Description
v
enum_type
Operators
operator enum_type() const
Explicit conversion to the enum type.
Functions
static TypeName()
The fully-qualified name of the enum type, scope delimited by periods.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-03-21 UTC."],[[["The webpage provides documentation for the `ProtoEnum` class in the Google Cloud Spanner C++ library, detailing its functionality and usage across various versions."],["`ProtoEnum` objects can be implicitly constructed from, and explicitly converted to, an underlying enum type `E`, with the ability to copy, assign, compare, and stream these values."],["The default value of `ProtoEnum` is the first listed value in the corresponding enum's definition, and there is an implicit constructor that allows construction from the enum type."],["The documentation lists available versions of `ProtoEnum`, ranging from the latest release candidate 2.37.0-rc down to version 2.11.0."],["The documentation contains a function called `TypeName` which returns the fully qualified name of the enum type as a string."]]],[]]