Tried it a little (30 minutes), so I didn't messed up with objects nor threads, but in these 30 minutes what I liked:
5.times { ... }5.upto(20) { ... }At least the first one, if possible to use with an integer variable $nr.times{...} it could have some use. The same for the second... easier to read than a typical C for but so easy as a for(5..20) perl for.
What I didn't like, was to use the sin function. Some print 3.4.sin does not work as expected.