Example usage for java.lang Iterable iterator

Introduction

In this page you can find the example usage for java.lang Iterable iterator.

Prototype

Iterator<T> iterator();

Source Link

Document

Returns an iterator over elements of type T .

Usage

From source file:Main.java

static String tocsv(Iterable<String> set) {
    Iterator<String> iter = set.iterator();
    StringBuffer buf = new StringBuffer();
    if (iter.hasNext()) {
        buf.append(iter.next());/*from   w w  w .  j a  v a 2  s.  c om*/
    }
    while (iter.hasNext()) {
        buf.append(",");
        buf.append(iter.next());
    }

    return buf.toString();
}

From source file:Main.java

/**
 * Get the first element of a an {@link Iterable} in iteration order, or null if empty.
 *
 * @param <T> the type//from   w w  w.  j  a va  2 s  .co m
 * @param iterable the thing to get something from.
 * @return the first thing the iterator spits out. May
 */
public static <T> T first(@Nonnull final Iterable<? extends T> iterable) {
    final Iterator<? extends T> iterator = iterable.iterator();
    return (iterator.hasNext()) ? iterator.next() : null;
}

From source file:Main.java

public static boolean isNotEmpty(@Nullable final Iterable<?> aCont) {
    return aCont != null && aCont.iterator().hasNext();
}

From source file:Main.java

public static boolean isEmpty(@Nullable final Iterable<?> aCont) {
    return aCont == null || !aCont.iterator().hasNext();
}

From source file:Main.java

/**
 * Adds all of the items from a given {@code Iterable} into a
 * {@code Collection}./*ww w  . j av a2 s .  c  om*/
 *
 * @param <T>
 *            the element type of the given {@code Iterable} and
 *            {@code Collection}
 * @param <C>
 *            the type of the given {@code Collection}
 * @param c
 *            the {@code Collection} to add items to
 * @param i
 *            the {@code Iterable} to take items from
 * @return {@code c}
 */
public static <T, C extends Collection<T>> C fillFromIterable(C c, Iterable<T> i) {
    return fillFromIterator(c, i.iterator());
}

From source file:Main.java

/**
 *  Appends the contents of an iterable object to the passed collection.
 *///from   w ww.j  a  v  a 2 s .  com
public static <T> void addAll(Collection<T> coll, Iterable<T> src) {
    addAll(coll, src.iterator());
}

From source file:Main.java

public static <T> Set<T> toSet(final Iterable<T> iterable) {
    final Set<T> set = new TreeSet<T>();
    for (Iterator<T> i = iterable.iterator(); i.hasNext();) {
        set.add(i.next());/*from  www . ja v  a2s.  c  o  m*/
    }
    return set;
}

From source file:Main.java

public static String join(Iterable<? extends CharSequence> s, String delimiter) {
    Iterator<? extends CharSequence> iter = s.iterator();
    if (!iter.hasNext())
        return "";
    StringBuilder buffer = new StringBuilder(iter.next());
    while (iter.hasNext())
        buffer.append(delimiter).append(iter.next());
    return buffer.toString();
}

From source file:Main.java

public static <T> Iterable<T> openIntervalIterable(Iterable<T> iterable, T start, T end) {
    return () -> openIntervalIterator(iterable.iterator(), start, end);
}

From source file:edu.byu.nlp.util.Counters.java

public static <E> Counter<E> count(Iterable<E> it) {
    return count(it.iterator());
}