Interesting factoid:

Did you know that Smalltalk practically invented TDD, or at least it was largely responsible for its creation? (Also, Smalltalk created the world’s first refactoring browser!)

See Type Wars.

Smalltalkers have known about the power of TDD since, well, forever. They’ve also known the value of constant refactoring. These are some of the reasons that Smalltalk is the most productive general-purpose programming language in the world, according to a study conducted by Namcook Analytics. On average, twice as productive as JavaScript, C++, Go, Java, PHP, Python, and C#. This is only the average; in many instances, the productivity amplification could be up to 5X (according to many Smalltalkers I’ve spoken to)!

Just FYI.

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