[−][src]Function paho_mqtt_sys::MQTTProperties_propertyCount
pub unsafe extern "C" fn MQTTProperties_propertyCount(
props: *mut MQTTProperties,
propid: MQTTPropertyCodes
) -> c_int
Returns the number of instances of a property id. Most properties can exist only once. User properties and subscription ids can exist more than once. @param props pointer to the property list. @param propid the property id to check for. @return the number of times found. Can be 0.