play-with-tri-expression.md

Play with tri-expression

条件 ？处理1:处理2

条件：逻辑表达式，返回bool类型值 处理1：当条件为真时执行 处理2：当条件为假时执行

point =2800 
if point ==2800 then
	puts "uzi"
else 
	puts "other"
end
puts point ==2800? "uzi":"other"