Interesting! Just for fun I tried to list all binary operators to check which comply with this rule. These symmetric symbols represent symmetric operators in o

Interesting! Just for fun I tried to list all binary operators to check which comply with this rule. These symmetric symbols represent symmetric operators in one or more widespread languages (C-like, Basic, etc.), so they're OK: + * | ^ /\ \/ == === <> = (where = is test for equality, not assignment). Conversely, these asymmetric symbols represent asymmetric operators, also OK: / % -> => << >> < <= > >= , := \ && plus all the assigments like +=. Now the bad ones, symmetric symbols for asymmetric operators: - = ** ^ || . :: .. (where = is assignment, ^ is exponent). And finally the few asymmetric symbols for symmetric operators: & != I'm probably missing a lot of other operators...