pub unsafe extern "C" fn flipper_format_insert_or_update_string( flipper_format: *mut FlipperFormat, key: *const c_char, data: *mut FuriString, ) -> bool
Updates the value of the first matching key to a string value, or adds the key and value if the key did not exist. Sets the RW pointer to a position at the end of inserted data.
flipper_format
key
data
True on success