Method iter

src/jvm/clojure/lang/RT.java:591–634

(Object coll)

}

static public Iterator iter(Object coll){
	if(coll instanceof Iterable)
		return ((Iterable)coll).iterator();
	else if(coll == null)
		return new Iterator(){
			public boolean hasNext(){
				return false;
			}

			public Object next(){
				throw new NoSuchElementException();
			}

			public void remove(){
				throw new UnsupportedOperationException();
			}
		};
	else if(coll instanceof Map){
		return ((Map)coll).entrySet().iterator();
	}
	else if(coll instanceof String){
		final String s = (String) coll;
		return new Iterator(){
			int i = 0;

			public boolean hasNext(){
				return i < s.length();
			}

			public Object next(){
				return s.charAt(i++);
			}

			public void remove(){
				throw new UnsupportedOperationException();
			}
		};
	}
  else if(coll.getClass().isArray()){
    return ArrayIter.createFromObject(coll);
  }
	else
		return iter(seq(coll));
}

static public Object seqOrElse(Object o) {
	return seq(o) == null ? null : o;