4 comments

[ 0.29 ms ] story [ 20.1 ms ] thread
if (42 = myNumber) { /* ... */ }

// A syntax error this is and compile it will not

At least it's a compile time error and not a run time exception, because there is no try{}.
I use this sometimes in my JavaScript to avoid > characters, which trip up Mosaic, which considers > to be the end of HTML comments.