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Ruby on rails Ruby-showel算子vs（？：）条件

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Ruby on rails Ruby-showel算子vs（？：）条件,ruby-on-rails,ruby,Ruby On Rails,Ruby,我有以下代码： @ids = [] x = 'a' @ids << x == 'a' ? [1,2] : [3,4] @ids @ids=[] x='a' @ids操作按其优先级顺序执行。 相关代码行中的操作按以下顺序执行： @ids (((@ids << x) == 'a') ? [1,2] : [3,4]) ^^^----1----^ ^ ^ ||---------2--------| | |-

我有以下代码：

@ids = []
x = 'a'
@ids << x == 'a' ? [1,2] : [3,4]
@ids

@ids=[]
x='a'

@ids操作按其优先级顺序执行。
相关代码行中的操作按以下顺序执行：


  • @ids

    (((@ids << x) == 'a') ? [1,2] : [3,4])
^^^----1----^       ^                ^
||---------2--------|                |
|------------------3-----------------|

    

    @ids << (x == 'a' ? [1,2] : [3,4])

    

    @ids.push(x == 'a' ? [1,2] : [3,4])