[taolson]

> Indeed Smalltalk - a pure OOP language - had `Block` objects fifty years ago.

Although in the original Smalltalk-80, blocks were not full closures, so it didn't support all the things you would expect to be able to do with a lambda.

[igouy]

"The major commercial Smalltalk implementations of the 1990’s all corrected these problems and developed various techniques for efficiently implementing blocks."

https://wirfs-brock.com/allen/things/smalltalk-things/effici...