puts true and false #相当于 (puts true) and false
Use &&/|| for boolean expressions, and/or for control flow. (Rule of thumb: If you have to use outer parentheses, you are using the wrong operators.)
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puts true and false #相当于 (puts true) and false
Use &&/|| for boolean expressions, and/or for control flow. (Rule of thumb: If you have to use outer parentheses, you are using the wrong operators.)
转载于:https://www.cnblogs.com/or2-/p/4446405.html