I'm trying to understand why this expression: $x = false && print 'printed' || true; results in $x being false instead of true. I know that && has higher precedence than ||, but I'm confused about how the combination of…
Why this code is error: console.log(true&&false??true) But this code is no error: console.loge((true&&false)??true) Or this example why B() does not run: function A() { console.log('called A'); return false; } function B() { console.log('called B'); return false; } function C() {…
In Postgres, does the EXISTS operator have the highest precedence of all? For example: SELECT 1 + EXISTS (SELECT 1)::int; It seems to be missing from the manual page. Though the highest one is ::, meaning EXISTS would be higher?…
I don't understand what's going on here in PHP. I've spent hours on this until I understood that it doen't work normally, or that I dont understand something. Here the few lines : $test = false OR false OR true;…