Detailed Description

Defines a feature flag listener which may be used to listen for flag changes. The struct should be initialized using LDFlagListener_Init before use.

Member Data Documentation

FlagChangedCallbackFn LDFlagListener::FlagChanged

Callback function which is invoked for flag changes.

The provided pointers are only valid for the duration of the function call (excluding UserData, whose lifetime is controlled by the caller).

Parameters

flag_key	The name of the flag that changed.
new_value	The new value of the flag. If there was not an new value, because the flag was deleted, then the LDValue will be of a null type. Check the deleted parameter to see if a flag was deleted.
old_value	The old value of the flag. If there was not an old value, for instance a newly created flag, then the Value will be of a null type.
deleted	True if the flag has been deleted.

void* LDFlagListener::UserData

UserData is forwarded into callback functions.

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

/home/runner/work/cpp-sdks/cpp-sdks/libs/common/include/launchdarkly/bindings/c/flag_listener.h