javolution.util.function.Reducers Class Reference

Classes
class	AndReducer
class	AnyReducer
class	MaxReducer
class	MinReducer
class	OrReducer
class	SumReducer

Static Public Member Functions
static< E > Reducer< E >	any (Class<? extends E > type)
static< E > Reducer< E >	max (Comparator<? super E > comparator)
static< E > Reducer< E >	min (Comparator<? super E > comparator)
static Reducer< Boolean >	and ()
static Reducer< Boolean >	or ()
static Reducer< Integer >	sum ()

Private Member Functions
	Reducers ()

Detailed Description

A set of useful reducers of collection elements.

Author

Jean-Marie Dautelle

Version

6.0, July 21, 2013

See also

FastCollection::reduce(Reducer)

Definition at line 30 of file Reducers.java.

Constructor & Destructor Documentation

Reducers()

javolution.util.function.Reducers.Reducers ( )

private

Definition at line 33 of file Reducers.java.

{}

Member Function Documentation

and()

static Reducer<Boolean> javolution.util.function.Reducers.and ( )

static

Conditional 'and' operator (returns

true 

if the collection is empty). This operator stops iterating as soon as a

false 

value is found.

Definition at line 155 of file Reducers.java.

                                         {
        return new AndReducer();
    }

any()

static <E> Reducer<E> javolution.util.function.Reducers.any ( Class<? extends E >  type )

static

Returns any non-null element of the specified type. This reducer stops iterating as soon as an element with the matching type is found.

Definition at line 42 of file Reducers.java.

                                                              {
        return new AnyReducer<E>(type);
    }

Referenced by javolution.util.FastCollection< E >.any().

Here is the caller graph for this function:

max()

static <E> Reducer<E> javolution.util.function.Reducers.max ( Comparator<? super E >  comparator )

static

Returns the greatest element of a collection according to the specified comparator (returns

null 

if the collection is empty).

Parameters

comparator

the comparator to use for comparison.

Definition at line 80 of file Reducers.java.

                                                                       {
        return new MaxReducer<E>(comparator);
    }

Referenced by javolution.util.FastCollection< E >.max().

Here is the caller graph for this function:

min()

static <E> Reducer<E> javolution.util.function.Reducers.min ( Comparator<? super E >  comparator )

static

Returns the smallest element of a collection according to the collection comparator (returns

null 

if the collection is empty).

Definition at line 117 of file Reducers.java.

                                                                       {
        return new MinReducer<E>(comparator);
    }

Referenced by javolution.util.FastCollection< E >.min().

Here is the caller graph for this function:

or()

static Reducer<Boolean> javolution.util.function.Reducers.or ( )

static

Conditional 'or' operator (returns

false 

if the collection is empty). This operator stops iterating as soon as a

true 

value is found.

Definition at line 183 of file Reducers.java.

                                        {
        return new OrReducer();
    }

sum()

static Reducer<Integer> javolution.util.function.Reducers.sum ( )

static

Returns the sum of the specified integers value (returns

0 

if the collection is empty).

Definition at line 210 of file Reducers.java.

                                         {
        return new SumReducer();
    }

---

The documentation for this class was generated from the following file:

• Reducers.java