Re^2: How to print an array of multidimensional arrays with a for or foreach loop

[thanos1983]

Hello ikegami,

I have seen several times this syntax (ref($row) ? @$row : $row) but I was not aware how it was operating. So I looked it up and I found ternary operator ? it was so simple [condition] ? [true expression] : [false expression].

Thank you for time and effort.

[ikegami]

It's like if-then-else, but the value of "then" or "else" is returned by the whole.

[tobyink]

Why the "but"? If-then-else also returns the value of "then" or "else". But if-then-else is parsed as a whole statement making it hard to use in an expression.

use v5.14;

# Ternary is convenient to use in an expression...
my $value1 = int(rand 2) ? 666 : 999;

# If-then-else is less convenient...
my $value2 = do { if (int rand 2) { 666 } else { 999 } };

say for $value1, $value2;