Example usage for java.util.function ToIntFunction applyAsInt

Introduction

In this page you can find the example usage for java.util.function ToIntFunction applyAsInt.

Prototype

int applyAsInt(T value);

Source Link

Document

Applies this function to the given argument.

Usage

From source file:Main.java

public static void main(String[] args) {
    ToIntFunction<String> i = (x) -> Integer.parseInt(x);

    System.out.println(i.applyAsInt("2"));
}

From source file:Main.java

/**
 * Garbage free sum function.//from  w  ww .  java 2s . c  om
 *
 * @param values the list of input values
 * @param function function that map each value to an int
 * @param <V> the value to add up
 * @return the sum of all the int values returned for each member of the list.
 */
public static <V> int sum(final List<V> values, final ToIntFunction<V> function) {
    int total = 0;

    final int size = values.size();
    for (int i = 0; i < size; i++) {
        final V value = values.get(i);
        total += function.applyAsInt(value);
    }

    return total;
}

From source file:at.gridtec.lambda4j.function.bi.to.ToIntBiFunction2.java

/**
 * Creates a {@link ToIntBiFunction2} which uses the {@code first} parameter of this one as argument for the given
 * {@link ToIntFunction}.//from ww  w  . j a  v a  2s .c  o m
 *
 * @param <T> The type of the first argument to the function
 * @param <U> The type of the second argument to the function
 * @param function The function which accepts the {@code first} parameter of this one
 * @return Creates a {@code ToIntBiFunction2} which uses the {@code first} parameter of this one as argument for the
 * given {@code ToIntFunction}.
 * @throws NullPointerException If given argument is {@code null}
 */
@Nonnull
static <T, U> ToIntBiFunction2<T, U> onlyFirst(@Nonnull final ToIntFunction<? super T> function) {
    Objects.requireNonNull(function);
    return (t, u) -> function.applyAsInt(t);
}

From source file:at.gridtec.lambda4j.function.bi.to.ToIntBiFunction2.java

/**
 * Creates a {@link ToIntBiFunction2} which uses the {@code second} parameter of this one as argument for the given
 * {@link ToIntFunction}.//from   w w  w.  j  a v  a 2 s .  co  m
 *
 * @param <T> The type of the first argument to the function
 * @param <U> The type of the second argument to the function
 * @param function The function which accepts the {@code second} parameter of this one
 * @return Creates a {@code ToIntBiFunction2} which uses the {@code second} parameter of this one as argument for
 * the given {@code ToIntFunction}.
 * @throws NullPointerException If given argument is {@code null}
 */
@Nonnull
static <T, U> ToIntBiFunction2<T, U> onlySecond(@Nonnull final ToIntFunction<? super U> function) {
    Objects.requireNonNull(function);
    return (t, u) -> function.applyAsInt(u);
}

From source file:at.gridtec.lambda4j.function.tri.to.ToIntTriFunction.java

/**
 * Creates a {@link ToIntTriFunction} which uses the {@code first} parameter of this one as argument for the given
 * {@link ToIntFunction}./*from w w  w.jav a 2 s  .co  m*/
 *
 * @param <T> The type of the first argument to the function
 * @param <U> The type of the second argument to the function
 * @param <V> The type of the third argument to the function
 * @param function The function which accepts the {@code first} parameter of this one
 * @return Creates a {@code ToIntTriFunction} which uses the {@code first} parameter of this one as argument for the
 * given {@code ToIntFunction}.
 * @throws NullPointerException If given argument is {@code null}
 */
@Nonnull
static <T, U, V> ToIntTriFunction<T, U, V> onlyFirst(@Nonnull final ToIntFunction<? super T> function) {
    Objects.requireNonNull(function);
    return (t, u, v) -> function.applyAsInt(t);
}

From source file:at.gridtec.lambda4j.function.tri.to.ToIntTriFunction.java

/**
 * Creates a {@link ToIntTriFunction} which uses the {@code second} parameter of this one as argument for the given
 * {@link ToIntFunction}./* w  w  w  .  j a v a  2 s  . co m*/
 *
 * @param <T> The type of the first argument to the function
 * @param <U> The type of the second argument to the function
 * @param <V> The type of the third argument to the function
 * @param function The function which accepts the {@code second} parameter of this one
 * @return Creates a {@code ToIntTriFunction} which uses the {@code second} parameter of this one as argument for
 * the given {@code ToIntFunction}.
 * @throws NullPointerException If given argument is {@code null}
 */
@Nonnull
static <T, U, V> ToIntTriFunction<T, U, V> onlySecond(@Nonnull final ToIntFunction<? super U> function) {
    Objects.requireNonNull(function);
    return (t, u, v) -> function.applyAsInt(u);
}

From source file:at.gridtec.lambda4j.function.tri.to.ToIntTriFunction.java

/**
 * Creates a {@link ToIntTriFunction} which uses the {@code third} parameter of this one as argument for the given
 * {@link ToIntFunction}./*from w w w. j av  a  2  s. co m*/
 *
 * @param <T> The type of the first argument to the function
 * @param <U> The type of the second argument to the function
 * @param <V> The type of the third argument to the function
 * @param function The function which accepts the {@code third} parameter of this one
 * @return Creates a {@code ToIntTriFunction} which uses the {@code third} parameter of this one as argument for the
 * given {@code ToIntFunction}.
 * @throws NullPointerException If given argument is {@code null}
 */
@Nonnull
static <T, U, V> ToIntTriFunction<T, U, V> onlyThird(@Nonnull final ToIntFunction<? super V> function) {
    Objects.requireNonNull(function);
    return (t, u, v) -> function.applyAsInt(v);
}

From source file:at.gridtec.lambda4j.function.bi.obj.ObjIntToIntFunction.java

/**
 * Creates a {@link ObjIntToIntFunction} which uses the {@code first} parameter of this one as argument for the
 * given {@link ToIntFunction}./*from  ww  w  . ja  v a  2 s.  c o m*/
 *
 * @param <T> The type of the first argument to the function
 * @param function The function which accepts the {@code first} parameter of this one
 * @return Creates a {@code ObjIntToIntFunction} which uses the {@code first} parameter of this one as argument for
 * the given {@code ToIntFunction}.
 * @throws NullPointerException If given argument is {@code null}
 */
@Nonnull
static <T> ObjIntToIntFunction<T> onlyFirst(@Nonnull final ToIntFunction<? super T> function) {
    Objects.requireNonNull(function);
    return (t, value) -> function.applyAsInt(t);
}

From source file:at.gridtec.lambda4j.function.bi.obj.ObjByteToIntFunction.java

/**
 * Creates a {@link ObjByteToIntFunction} which uses the {@code first} parameter of this one as argument for the
 * given {@link ToIntFunction}.//from  w ww .  ja  v a 2  s  . com
 *
 * @param <T> The type of the first argument to the function
 * @param function The function which accepts the {@code first} parameter of this one
 * @return Creates a {@code ObjByteToIntFunction} which uses the {@code first} parameter of this one as argument for
 * the given {@code ToIntFunction}.
 * @throws NullPointerException If given argument is {@code null}
 */
@Nonnull
static <T> ObjByteToIntFunction<T> onlyFirst(@Nonnull final ToIntFunction<? super T> function) {
    Objects.requireNonNull(function);
    return (t, value) -> function.applyAsInt(t);
}

From source file:at.gridtec.lambda4j.function.bi.obj.ObjCharToIntFunction.java

/**
 * Creates a {@link ObjCharToIntFunction} which uses the {@code first} parameter of this one as argument for the
 * given {@link ToIntFunction}.//from  www  .  j a  va  2s .c o m
 *
 * @param <T> The type of the first argument to the function
 * @param function The function which accepts the {@code first} parameter of this one
 * @return Creates a {@code ObjCharToIntFunction} which uses the {@code first} parameter of this one as argument for
 * the given {@code ToIntFunction}.
 * @throws NullPointerException If given argument is {@code null}
 */
@Nonnull
static <T> ObjCharToIntFunction<T> onlyFirst(@Nonnull final ToIntFunction<? super T> function) {
    Objects.requireNonNull(function);
    return (t, value) -> function.applyAsInt(t);
}