A function is a rule of correspondence by which when anything is given (as argument) another thing (the value of the function for that argument) may be obtained.
函数是一种对应规则,通过它当给定任何东西(作为参数)时,可以获得另一个东西(该参数的函数值)。
我们必须拥抱成长型思维模式,不断学习、适应和进化。
In every line, there is a hidden truth.