灵感来源于 ObjectiveSugar 和 RubySugar
大多数 Ruby 函数都采用两种常见风格书写：以常规方式编写的 不可变 函数和以感叹号 (!) 结尾的 可变 函数。遗憾的是，在 Swift 中，! 被预留关键字用于 可选值。因此，RubifiedSwift 在可变函数末尾使用 $ 以保留最佳的 Ruby 样式。
var array = [1, 2, 3, 4]
array.at(2) // 3
array.at(-3) // 2
array.push(5) // [1, 2, 3, 4, 5]
array.push(6, 7) // [1, 2, 3, 4, 5, 6, 7]
array.unshift(0) // [0, 1, 2, 3, 4, 5, 6, 7]
array.unshift(-2, -1) // [-2, -1, 0, 1, 2, 3, 4, 5, 6, 7]
array.pop() // 7
array // [-2, -1, 0, 1, 2, 3, 4, 5, 6]
array.shift() // -2
array // [-1, 0, 1, 2, 3, 4, 5, 6]
array.join() // "-10123456"
array.join(" ") // "-1 0 1 2 3 4 5 6"
array.map$ { $0 * 2 }
array // [-2, 0, 2, 4, 6, 8, 10, 12]
array.select { $0 % 3 == 0 } // [6, 12]
var arr = array
arr.select$ { $0 % 3 == 0 }
arr // [6, 12]
array.reject { $0 % 4 == 0 } // [-2, 2, 6, 10]
arr = array
arr.reject$ { $0 % 4 == 0 }
arr // [-2, 2, 6, 10]
arr = array
arr.deleteIf { $0 % 5 == 0 }
arr // [-2, 2, 4, 6, 8, 12]
arr = array
arr.keepIf { $0 % 5 == 0 }
arr // [0, 10]
[1, 2, 3].permutation() // [[1, 2, 3], [1, 3, 2], [2, 1, 3], [2, 3, 1], [3, 1, 2], [3, 2, 1]]
array.max() // 12
array.min() // -2
arr = array
arr.delete(5) // nil
arr.delete(2) // Optional(2)
arr = [1, 1, 2, 3, 4, 4]
arr.uniq() // [1, 2, 3, 4]
arr.uniq$()
arr // [1, 2, 3, 4]
[1, 2, 3, 4].eachWithIndex { (element, index) in
print("\(index). \(element)")
}
[1, 2, 3, 4].mapWithIndex { (element, index) in
index * element
} // [0, 2, 6, 12]
arr = [1, 2, 3, 4]
arr << 5 // [1, 2, 3, 4, 5]
[1, 2, 3, 4] | [3, 4, 5, 6] // [1, 2, 3, 4, 5, 6]
[1, 2, 3, 4] & [3, 4, 5, 6] // [3, 4]
[1, 2, 3, 4] - [3, 4, 5, 6] // [1, 2]
[1, 2, 3, 4] ^ [3, 4, 5, 6] // [1, 2, 5, 6]
[1, 2] * [3, 4] // [[1, 3], [1, 4], [2, 3], [2, 4]]
[1, 2] * 3 // [1, 2, 1, 2, 1, 2]
[1, 2, 3, 4] * ", " // "1, 2, 3, 4"
[[1, 2, 3], [4, 5, 6]].transpose() // [[1, 4], [2, 5], [3, 6]]
let sub1 = [4, 5]
let sub2: [Any?] = [8, nil]
let sub3: [Any?] = [nil]
let sub4: [Any?] = [7, sub2, [9], sub3]
var arr: [Any?] = [1, 2, sub1, 6, sub4]
array.unwrapped() // [1, 2, [4, 5], 6, [Optional(7), Optional([Optional(8), nil]), Optional([9]), Optional([nil])]]
array.deepUnwrapped() // [1, 2, [4, 5], 6, 7, [9]]
array.compact() // [Optional(1), Optional(2), Optional([4, 5]), Optional(6), Optional([Optional(7), Optional([Optional(8), nil]), Optional([9]), Optional([nil])])]
array.deepCompact() // [Optional(1), Optional(2), Optional([4, 5]), Optional(6), Optional(7), Optional(8), Optional([9])]
["a", "b", "c", "d"].rotate() // ["b", "c", "d", "a"]
["a", "b", "c", "d"].rotate(-2) // ["c", "d", "a", "b"]
["a", "b", "c", "d"].sample() // "c"
["a", "b", "c", "d"].shuffle() // ["b", "c", "d", "a"]1.0.abs() // 1.0
-1.0.abs() // 1.0
7.seconds() // 7.0
6.minutes() // 360.0
5.hours() // 18000.0
4.days() // 345600.0
3.weeks() // 1814400.0
2.months() // 5184000.0
1.years() // 31536000.0
3.hours().ago()
3.hours().sinceNow()
let time = 3.hours().ago()
3.hours().until(time)
3.hours().since(time)
5.times() // [0, 1, 2, 3, 4, 5]
5.times {
print("Invoke callback")
}
3.upTo(5) // [3, 4, 5]
3.upTo(5) {
print("Invoke callback")
}
3.downTo(1) // [3, 2, 1]
3.downTo(1) {
print("Invoke callback")
}
1.next() // 2
1.pred() // 0
1.abs() // 1
-1.abs() // 1
15.toF() // 15.0
15.toS() // "15"
75.toS(2) // "1001011"
75.toS(8) // "113"
75.toS(16) // "4B"
75.toS(16, uppercase: false) // "4b"
3.isEven() // false
3.isOdd() // true
21.gcd(6) // 3
21.lcm(6) // 42var str = "Hello, World!"
str.length // 13
str[1] // "e"
str[-1] // "!"
str[1...4] // "ello"
str.reverse() // "!dlroW ,olleH"
str.split() // ["H", "e", "l", "l", "o", ",", " ", "W", "o", "r", "l", "d", "!"]
str.split(", ") // ["Hello", "World!"]
str.index("l") // 2
str * 2 // "Hello, World!Hello, World!"
str << " You're good" // "Hello, World! You're good"
str << 33 // "Hello, World! You're good!"
let match: String? = str =~ "\\w+" // "Hello"
let matches: [String] = str =~ "\\w+" // ["Hello", "World"]NSObject.performAfter(3) {
print("Perform after 3 seconds")
}
NSObject.performInBackground({
print("Perform in background")
}) {
print("Perform in foreground")
}