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An S-Expression inspiried library focused on iterators.

There is a newer version: 1.1.23

package com.github.basking2.sdsai.itrex.functions;

import com.github.basking2.sdsai.itrex.EvaluationContext;

import java.util.Iterator;

public class StringJoinFunction implements FunctionInterface {
    @Override
    public String apply(final Iterator iterator, final EvaluationContext evaluationContext) {
        if (!iterator.hasNext()) {
            return "";
        }

        final String s = iterator.next().toString();

        final StringBuilder sb = new StringBuilder();

        while (iterator.hasNext()) {
            final Object o = iterator.next();
            if (o instanceof Iterator) {
                @SuppressWarnings("unchecked")
                final Iterator