Example usage for org.apache.commons.functor.core.algorithm FoldLeft FoldLeft

Introduction

In this page you can find the example usage for org.apache.commons.functor.core.algorithm FoldLeft FoldLeft.

Prototype

public FoldLeft(BinaryFunction<? super T, ? super T, ? extends T> func) 

Source Link

Document

Create a new FoldLeft.

Usage

From source file:org.apache.commons.functor.example.kata.four.DataMunger.java

/**
 * Processes each line of the given Reader, returning the <i>selected</i> column for the
 * line where the absolute difference between the integer value of <i>col1</i> and <i>col2</i>
 * is least.  Note that lines that don't begin with an Integer are ignored.
 */// w ww . jav a  2 s  .  c  om
public static final Object process(final Reader file, final int selected, final int col1, final int col2) {
    return NthColumn.instance(selected)
            .evaluate(new FoldLeft<String>(lesserSpread(col1, col2)).evaluate(new FilteredGenerator<String>(
                    Lines.from(file), Composite.predicate(IsInteger.instance(), NthColumn.instance(0)))));
}

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