2013年12月29日 · fun good_max (xs : int list) = if null xs then 0 else if null (tl xs) then hd xs else (* for style, could also use a let-binding for (hd xs) *) let val tl_ans = good_max(tl xs) in if hd xs > tl_ans then hd xs else tl_ans end

2012年11月14日 · max [1,4,65,7,6]; Try to figure out why yourself. If you really need to return 0 if the input list to max is empty, then you should pattern match that case. This also fixes the warning about "match nonexhaustive", and is the correct place to do it. fun max [] = 0 | max (x::xs) = fold (fn a => fn b => if a > b then a else b) (x::xs) x;

2012年9月21日 · We want to find the largest value in a given nonempty list of integers. Then we have to compare elements in the list. Since data values are given as a sequence, we can do comparisons from the beginning or from the end of the list. Define in both ways.

Instances of the INTEGER signature provide a type of signed integers of either a fixed or arbitrary precision, and arithmetic and conversion operations. For fixed precision implementations, most arithmetic operations raise the exception Overflow when their result is not representable.

Make tuples and lists using built-in types and themselves. Note: 1-tuples don't exist in Standard ML. Operators have different priority levels. Higher priority operations are performed before lower priority operations. The operators *, +, and - work on both int and real types.

Int. max: int * int -> int where Int.toString is the function that returns the string representation of a given integer, and Int.compare has return type order , which is inhabited only by values LESS , EQUAL , and GREATER .

2022年5月25日 · Standard ML （SML），是一个 函数式 、 指令式 、 模块化 的 通用 的 编程语言，具有 编译时间类型检查 和 类型推论。 它流行于 编译器 作者和 编程语言研究 者和 自动定理证明 研究者之中。 Standard ML是 ML 的 现代方言，ML是用于 LCF （可计算函数逻辑）定理证明计划的编程语言。 Standard ML在广泛使用的语言之中与众不同，源于它具有正式规定《The Definition of Standard ML》，给出了语言的 类型规则 和 操作语义。 ML一般被归为非纯函数式 …

2022年2月9日 · min_max. Write a function min_max : int list -> int * int that takes a non-empty list of numbers, and returns a pair (min, max) of the minimum and maximum of the numbers in the list. cumsum. Write a function cumsum : int list -> int list that takes a list of numbers and returns a list of the partial sums of those numbers.

Standard ML of New Jersey （缩写为SML/NJ），由 普林斯顿大学 和 贝尔实验室 在1986年开始联合开发的实现，是一个完全的编译器，具有关联的库、工具、交互式外壳和文档，还支持 Concurrent ML [7]。 MLton，是一个 全程序优化 （英语：Interprocedural optimization） 编译器，它产生相比其他ML实现非常快的代码 [8]。

2018年4月13日 · How to put the maximum value of Integer into val in SML? You can remove the "option" part using Option.valOf : 'a option -> 'a : - val max = valOf Int.maxInt; > val max = 1073741823 : int