Method containsKey

src/jvm/clojure/lang/ATransientMap.java:83–85

(Object key)

	private static final Object NOT_FOUND = new Object();
	public final boolean containsKey(Object key){
		return valAt(key, NOT_FOUND) != NOT_FOUND;
	}
	public final IMapEntry entryAt(Object key){
		Object v = valAt(key, NOT_FOUND);
		if(v != NOT_FOUND)