Ternary ifelse ( ?: ) in different languages

• AWK

$ awk 'ORS=NR%3?",":"\n"' student-marks

• Perl /PHP

$result = ($a > $b) ? $x : $y;

In Per6, use double ? and ! instead.

$result = ($a > $b) ?? $x !! $y;

• R

ifelse(a>0,a,0)

Ternary operator (if?true:false)

• bash/linux

ternary operator ? : is just short form of if/else

case "$b" in
 5) a=$c ;;
 *) a=$d ;;
esac

Or

 [[ $b = 5 ]] && a="$c" || a="$d"

Reference:

http://en.wikipedia.org/wiki/Ternary_operation

http://en.wikipedia.org/wiki/%3F: