[ANN] Threequals: Ruby-like #=== for VW

All,

I have just released Threequals, which implements a Ruby-like #=== operator for Visualworks Smalltalk.

#=== provides more flexible object comparison, which can be useful in certain circumstances. For example, I now use #=== to compare expected and actual arguments in my DoubleAgents test double library.

In this implementation, two objects are === if they are =. In addition:

• A BlockClosure is === to an object if the block evaluates to true when passed that object.

• A Class is === to an object if the object is an instance of the class or one of its subclasses.

• An Interval is === to a number if that number is within the endpoints of the interval, including the endpoints.

• If the optional Threequals-Regex package is loaded, a regular expression (RxMatcher) is === to a string if the string matches the regex.

Threequals is available in the Cincom Public Store Repository. A snapshot of the current version is also on
GitHub. The Readme file on GitHub includes high-level documentation if you'd like more information before diving in.

The full release announcement is on my blog, Courageous Software.