它将使用一系列的规范,其中包括优先级编号以及一个通配字符表达式,以便与加载名称进行匹配。
It will have a series of specs that include a priority number and a wild card expression to match a load name or names.
如果松绑定(looser - binding)运算符使用紧绑定(tighter - binding)运算符作为操作数表达式,那么优先级是自动处理的。
If looser-binding operators take as operands expressions using tighter-binding operators, precedence is handled automatically.
在后缀表达式中,不需要括号,而且操作符的优先级也不再起作用了。
In postfix notation, the need for parentheses is eliminated and the priority of the operators is no longer relevant. You can use the following algorithm to evaluate postfix expressions.
And so, in fact, if I wanted the other version of it, in fact, if I do this right, 23 it's going to give me 23 because it does the multiplication first, if I wanted the other version of it, Python I need to tell it that, by using, excuse me, parentheses.
因此,实际上,如果我想换种做法,实际上,如果我去执行这个表达式,返回值是3,因为乘法会被优先执行,如果我需要换种做法,我需要告诉,用括号来告诉它。
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