Links for 16-Feb

Why are thread-safe collections so hard?

Effective concurrency -- Sharing is the root of all contention.

LINQ -- the functional programming gateway drug.

The basic syntax of F# - classes, interfaces, and members.

F# discoveries of the week ending 13-Feb.

Fun with folds.

C-based extensions for Ruby 1.8.6 and 1.9.1 in one code base.

IronPython 2.0.1 release.