What is the advantage of commas in a conditional statement?

Question

We can write an if statement as

if (a == 5, b == 6, ... , thisMustBeTrue)

and only the last condition should be satisfiable to ent

Answer 1

There is no advantage: the comma operator is simply an expression with type of the last expression in its expression list and an if statement evaluates a boolean expression.

if() { ... }
 with type of  boolean

It's a weird operator true, but there's no magic to it - except that it confuses lists of expressions with argument lists in function calls.

foo()
 with  := [[, ]*]

Note that in the argument list, comma binds stronger to separating arguments.