假设我有两个
msg = "Saved Successfully"
或
msg = -> "Saved #{@course.title} Successfully"
有没有办法在不知道msg是函数还是常规变量的情况下优雅地获得msg的值,而不是做
success_message = if typeof msg is 'function' then msg() else msg
https://stackoverflow.com/questions/8283431
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