限制到最大值

Question

@a = 200 
@b = 1 

@c = @a/@b 

@c將會等於200。我怎麼能制定一個最大值爲@c爲100？

if @c = 99, do nothing 
if @c = 100, do nothing 
if @c > 100, make @c 100 

在SQL中，這是LEAST功能。

Answer 1

Enumerable#min作品：

[@c, 100].min 

Answer 2

case @c 
when 99 
    ## do something 
when 100 
    ## do something 
else 
    @c = 100 if @c > 100 
    # or 
    @c = [@c, 100].min # inspired by minitech answer 
end