Method push_front

SIP/SIPUtility.h:58–61

		mList.push_back(val);
	}
	void push_front(ValueType val) {
		ScopedLock(this->mMapLock);
		mList.push_front(val);
	}
	ValueType pop_frontr(ValueType val) { // Like pop_front, but return the value.
		ScopedLock(this->mMapLock);
		ValueType result = mList.front();