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What does the phrase “binds stronger” mean?

2019-10-18 05:33发布

我知道这可能是一个新手的问​​题,但我试图让这句话的意义(从使用EBNF元语言纸):

 Logical and (&) binds stronger than logical or (|). 

在此之前,它说:

Conditions are: 
  condition ::= condition (`&´ | `|´ ) condition | `!´ condition | relation 
  relation ::= expression ( `=´ | `#´ | `<´ | `<=´ | `>´ | `>=´ ) expression 

谢谢

Answer 1:

这是指优先 。 换句话说,如果你有A & B | C A & B | C ,你真的有(A & B) | C (A & B) | C 。 具有较高的优先级/结合更强操作第一评价。



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