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Add to CollectionUtil: consolidate LazyList creation+sizing(+empty case)

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caucow
2021-05-13 13:40:42 -05:00
parent 2a2ffa1572
commit 3339fdc859
1 changed files with 11 additions and 0 deletions
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11
plugins/civmodcore-paper/src/main/java/vg/civcraft/mc/civmodcore/util/MoreCollectionUtils.java
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@@ -1,6 +1,8 @@
package vg.civcraft.mc.civmodcore.util;
import it.unimi.dsi.fastutil.ints.Int2ObjectFunction;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
@@ -8,6 +10,7 @@ import java.util.concurrent.ThreadLocalRandom;
import java.util.function.Predicate;
import java.util.function.Supplier;
import org.apache.commons.collections4.CollectionUtils;
import org.apache.commons.collections4.list.LazyList;
import org.apache.commons.lang3.ArrayUtils;
/**
@@ -170,4 +173,12 @@ public final class MoreCollectionUtils {
return counter;
}
public static <T> LazyList<T> lazyList(List<Supplier<T>> supplierList) {
LazyList<T> lazyList = LazyList.lazyList(new ArrayList<>(supplierList.size()), i -> supplierList.get(i).get());
// initialize size of LazyList if size > 0
if (!supplierList.isEmpty()) {
lazyList.get(supplierList.size() - 1);
}
return lazyList;
}
}