https://github.com/jruby/jruby/jruby-core: JRuby is the effort to recreate the Ruby (https://www.ruby-lang.org) interpreter in Java. (JRuby)
  • headius
  • enebo
  • wmeissner
  • BanzaiMan
  • mkristian 
public interface org.jruby.util.func.Function1<R, A0> extends java.util.function.Function<A0, R>
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: org.jruby.util.func.Function1
  super_class: java.lang.Object
{
}
Signature: <R:Ljava/lang/Object;A0:Ljava/lang/Object;>Ljava/lang/Object;Ljava/util/function/Function<TA0;TR;>;
SourceFile: "Function1.java"
    RuntimeVisibleAnnotations: 
      java.lang.Deprecated()