链滴 Element Plus 和 Ant Design Vue 对比测评 ，哪个更好？ 作者：HiJiangChuan 原文链接：https://ld246.com/article/1649305618750 来源网站：链滴 许可协议：署名-相同方式共享 4.0 国际 (CC BY-SA 4.0) 本文首发：《Element Plus 和 Ant Design Vue 对比测评，哪个更好？》 Element Plus 和 Ant esign Vue 也相续发布新版支持 Vue 3。到底应该怎么选择呢？本文从多个纬度对两个框架进行对比 测评。 原文链接：Element Plus 和 Ant Design Vue 对比测评，哪个更好？ Element Plus 发布正式版后，下载量飙升，当然这也依托于 Element UI 的占有率和好口碑。有关 El ment Plus 的入门教程可看这篇：《Element 的入门教程可看这篇：《Element Plus for Vue 3 入门教程》 框架版本对 Vue 的支持 ● Element UI 支持 Vue 2 ● Element Plus 支持 Vue 3 ● Ant Design Vue 1.x 支持 Vue 2 ● Ant Design Vue 3.x 支持 Vue 3 Element Plus 是为了适配 Vue 3 对 Element UI 进行的重构。Vue

）。自然数的某些运算函 数定义如下，同样来自标准库： -- 一进制加法 plus : Nat -> Nat -> Nat plus Z y = y plus (S k) y = S (plus k y) -- 一进制乘法 mult : Nat -> Nat -> Nat mult Z y = Z mult (S k) y = plus y (mult k y) 标准算术运算符 + 和 * 同样根据 函数名（前面的 plus 和 mult ），数据构造器 （Z、S、Nil 和 ::） 以及类型构造器（Nat 和 List）均属同一命名空间。不过按照约定， 数据类型和 构造器的名字通常以大写字母开头。我们可以在 奉 奤 奲 奩 女 提示符中测试这些函数： Idris> plus (S (S Z)) (S (S Z)) 4 : Nat Idris> mult (S (S (S Z))) (plus (S (S 奲 奩 女 会将其显示为 4。 plus (S (S Z)) (S (S Z)) 的结果实际上为 (S (S (S (S Z))))， 即自然数 4。这点可在 奉 奤 奲 奩 女 提示符中验证： Idris> (S (S (S (S Z)))) 4 : Nat 和算术运算符一样，整数字面也可通过接口重载，因此我们也能像下面这样测试函数： Idris> plus 2 2 4 : Nat Idris>

4. 5. fn plus_one(i: Int) -> Int { i + 1 } 6. fn plus_two(i: Int) -> Int { i + 2 } 7. 8. let add_two: (Int) -> Int = repeat(plus_one) // 存储函数 9. 10. let compare: Bool = add_two(2) == plus_two(2) // -> Int = repeat(plus_one) repeat(plus_one) fn (a) { plus_one(plus_one(a)) } 替换表达式中的标识符 let x: Int = add_two(2) add_two(2) plus_one(plus_one(2)) 替换表达式中的标识符 plus_one(2) + 1

案例：语法解析器 Hongbo Zhang 1 语法解析器 案例⽬标 解析基于⾃然数的数学表达式： "(1+ 5) * 7 / 2" 转化为单词列表 LParen Value(1) Plus Value(5) Multiply Value(7) Divide Value(2) 转化为抽象语法树 Division(Multiply(Add(Value(1), Value(5)), Value(7)) +678" -> [ Value(12), Plus, Value(678) ] 通常可以通过有限状态⾃动机完成 ⼀般⽤领域特定语⾔定义后，由软件⾃动⽣成程序 算术表达式的词法定义 1. Number = %x30 / (%x31-39) *(%x30-39) 2. LParen = "(" 3. RParen = ")" 4. Plus = "+" 5. Minus Divide = "/" 8. Whitespace = " " 3 词法分析 算术表达式的词法定义 1. Number = %x30 / (%x31-39) *(%x30-39) 2. Plus = "+" 每⼀⾏对应⼀个匹配规则 "xxx" ：匹配内容为xxx的字符串 a b ：匹配规则a，成功后匹配规则b a / b ：匹配规则a，匹配失败则匹配规则b *a ：重复匹配规则a，可匹配0或多次

⽉兔允许利⽤ <变量>.<⽅法>() 的形式调⽤⽅法 ⽅法的第⼀个参数为该类型的数值 1. fn BoxedInt::plus_one(b: BoxedInt) -> BoxedInt { 2. { value : b.value + 1 } 3. } 4. fn plus_two(self: BoxedInt) -> BoxedInt { // 参数名称为self时可省略 <类型>:: 5 6. } 7. 8. fn init { 9. let _five = { value: 1 }.plus_one().plus_one().plus_two() 10. // ⽆需进⾏深层嵌套，⽅便理解 11. let _five = plus_two(plus_one(plus_one({value: 1}))) 12. } 8 派⽣定义 简单的接⼝可以⾃动⽣成，在定义最后声明

文件名：src/main.rs 59/600 Rust 程序设计语言 简体中文版 fn main() { let x = plus_one(5); println!("The value of x is: {x}"); } fn plus_one(x: i32) -> i32 { x + 1 } 运行代码会打印出 The value of x is: 6 。但如果在包含 的行尾加上一个分号，把它 从表达式变成语句，我们将看到一个错误。 文件名：src/main.rs fn main() { let x = plus_one(5); println!("The value of x is: {x}"); } fn plus_one(x: i32) -> i32 { x + 1; } 运行代码会产生一个错误，如下： $ cargo run Compiling v0.1.0 (file:///projects/functions) error[E0308]: mismatched types --> src/main.rs:7:24 | 7 | fn plus_one(x: i32) -> i32 { | -------- ^^^ expected `i32`, found `()` | | | implicitly

New module in Apache 2.0. This module includes the functionality of mod_mmap_static in Apache 1.3, plus adds further caching abilities. mod_headers This module is much more flexible in Apache 2.0. It which compiles Apache for the installation tree /sw/pkg/apache with a particular compiler and flags plus the two additional modules mod_rewrite and mod_speling for later loading through the DSO mechanism: If you configure with --enable-nonportable-atomics, however, APR generates code that uses a SPARC v8plus opcode for fast hardware compare-and-swap. If you configure Apache with this option, the atomic operations

New module in Apache 2.0. This module includes the functionality of mod_mmap_static in Apache 1.3, plus adds further caching abilities. mod_headers This module is much more flexible in Apache 2.0. It which compiles Apache for the installation tree /sw/pkg/apache with a particular compiler and flags plus the two additional modules mod_rewrite and mod_speling for later loading through the DSO mechanism: If you configure with --enable-nonportable-atomics, however, APR generates code that uses a SPARC v8plus opcode for fast hardware compare-and-swap. If you configure Apache with this option, the atomic operations

New module in Apache 2.0. This module includes the functionality of mod_mmap_static in Apache 1.3, plus adds further caching abilities. mod_headers This module is much more flexible in Apache 2.0. It which compiles Apache for the installation tree /sw/pkg/apache with a particular compiler and flags plus the two additional modules mod_rewrite and mod_speling for later loading through the DSO mechanism: If you configure with --enable-nonportable-atomics, however, APR generates code that uses a SPARC v8plus opcode for fast hardware compare-and-swap. If you configure Apache with this option, the atomic operations

New module in Apache 2.0. This module includes the functionality of mod_mmap_static in Apache 1.3, plus adds further caching abilities. mod_headers This module is much more flexible in Apache 2.0. It which compiles Apache for the installation tree /sw/pkg/apache with a particular compiler and flags plus the two additional modules mod_rewrite and mod_speling for later loading through the DSO mechanism: If you configure with --enable-nonportable-atomics, however, APR generates code that uses a SPARC v8plus opcode for fast hardware compare-and-swap. If you configure Apache with this option, the atomic operations