Nor is it just the new kids - ":=" for assignment goes back to Pascal and Smalltalk (IIRC Smalltalk used a funky left arrow, like R but a single char, but also

Nor is it just the new kids - ":=" for assignment goes back to Pascal and Smalltalk (IIRC Smalltalk used a funky left arrow, like R but a single char, but also allowed := because who has a funky left arrow on their keyboard?)