Using afunction as afunctionargument, or returning afunction as a value, elevates this abstraction into the realm of higher-order functions.
将函数用作函数的参数,或将函数作为值返回,这些概念属于高阶函数的领域。
2
Length ofa string variable: Input argument for the SUBSTR function, which determines the desired length of the resulting string or output of the length function.
字符串变量的长度:substr函数的输入参数,决定了结果字符串的期望长度或length函数的输出。
3
This statement passes a row as the second argumentof the genxml2 function.