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A Persistent Java Collections Library

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One of the major differences between pcollections and other persistent collections libraries like vavr is the desire to remain interoperable with the standard java collections framework. However, because persistent collections...

enhancement
help wanted

hi, how about the performance compare with others? any benchmark?

enhancement
help wanted

- [ ] if the passed list is a `Set`, then iterate over whichever set is smaller, so we get `O(mlgn)` complexity, with m

enhancement

As discussed in #74, using high-level methods in loops can create lots of wrapper objects, which can reduce performance. An example of fixing this sort of thing is f58c25f. -...

enhancement
help wanted

`mvn clean compile -Dmaven.compiler.showDeprecation=true` …they don't indicate any actual problem, they're just because we have to implement mutators to fulfill Collections interfaces, but we have also deprecated mutators in PCollections...

enhancement
good first issue

as discussed in #50 we can use this benchmark to help shrink the memory footprint- https://github.com/Albul/sizeof-objects-java

enhancement

We get doclint errors when running `./gradlew javadoc`, if we don't enable `Xdoclint:none` in `build.gradle` Mostly it's just `@param` fields with no description—simplest would be to just delete them entirely....

enhancement
good first issue

Hi there, can you please provide a version in which your interfaces do not extend mutable Java interfaces? **Example**: Right now ```PVector``` extends ```List```. This forces users to reference directly...

enhancement
good first issue

I am currently investigating a garbage issue created by an application using pcollections a lot. What I observed is that Iteration over an IntTree allocates plenty of Integers, as seen...

enhancement
help wanted

_From [[email protected]](https://code.google.com/u/100694777776169671086/) on 2009-03-16T21:43:16Z_ should be relatively easy to duplicate one of the other Java-vs-PCollections random tests. _Original issue: http://code.google.com/p/pcollections/issues/detail?id=2_

enhancement
good first issue