如何在Ruby中使用條件運(yùn)算符(？：)？條件運(yùn)算符如何(? :)用于紅寶石？例如，這是對(duì)的嗎？<% question = question.size > 20 ? question.question.slice(0, 20)+"..." : question.question %>
3 回答
夢(mèng)里花落0921
TA貢獻(xiàn)1772條經(jīng)驗(yàn) 獲得超6個(gè)贊
if_this_is_a_true_value ? then_the_result_is_this : else_it_is_this
ifif a then b else c end === a ? b : c
puts (if 1 then 2 else 3 end) # => 2puts 1 ? 2 : 3 # => 2x = if 1 then 2 else 3 endputs x # => 2
puts if 1
question = if question.size > 20 then question.slice(0, 20) + "..."else questionend
慕尼黑5688855
TA貢獻(xiàn)1848條經(jīng)驗(yàn) 獲得超2個(gè)贊
puts true ? "true" : "false" => "true" puts false ? "true" : "false" => "false"
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