在 Swift 2.0 中使用 Stride
Using Stride in Swift 2.0
我正在尝试了解如何使用 Swift 中的 Stride 功能。
好像又变了,自从Xcode7.0 beta 6.
以前我可以使用
let strideAmount = stride(from: 0, to: items.count, by: splitSize)
let sets = strideAmount.map({ clients[[=11=]..<advance([=11=], splitSize, items.count)] })
现在,尽管有代码提示,我还是不知道如何使用此功能。
任何例子都会有所帮助,谢谢。
我看过 examples,但我无法掌握如何使用它。我从 Apple Docs 获得的所有内容都是有限的。
谢谢
有点改动,这里是新语法:
0.stride(to: 10, by: 2)
和
Array(0.stride(to: 10, by: 2)) // is [0, 2, 4, 6, 8]
如果你看一下 here,你可以看到哪些类型符合 Strideable
协议。
正如@RichFox 指出的那样,在 Swift 3.0 中,语法变回了原始的全局函数形式,例如:
stride(from:0, to: 10, by: 2)
stride函数在swift 4.2
中的使用
12345
2345
345
45
5
5
45
345
2345
12345
for i in 1...5{
for k in 1...i{
print(terminator : " ")
}
for j in stride(from: i, to: 6, by: 1){
print(j , terminator : "")
}
print(" ")
}
for i in stride(from: 5, to: 0, by: -1)
{
for k in 1...i{
print(terminator : " ")
}
for j in stride(from: i, to: 6, by: 1){
print(j,terminator : "")
}
print(" ")
}
1 2 3 4 5
2 3 4 5
3 4 5
4 5
5
5
4 5
3 4 5
2 3 4 5
1 2 3 4 5
for i in 1...5{
for k in 0...i{
print(terminator : " ")
}
for j in stride(from: i, to: 6, by: 1){
print(j , terminator : " ")
}
print(" ")
}
for i in stride(from: 6, to: 1, by: -1){
for k in 1...i{
print(terminator : " ")
}
for j in stride(from: i-1, to: 6, by: 1){
print(j , terminator : " ")
}
print(" ")
}
我正在尝试了解如何使用 Swift 中的 Stride 功能。
好像又变了,自从Xcode7.0 beta 6.
以前我可以使用
let strideAmount = stride(from: 0, to: items.count, by: splitSize)
let sets = strideAmount.map({ clients[[=11=]..<advance([=11=], splitSize, items.count)] })
现在,尽管有代码提示,我还是不知道如何使用此功能。
任何例子都会有所帮助,谢谢。
我看过 examples,但我无法掌握如何使用它。我从 Apple Docs 获得的所有内容都是有限的。
谢谢
有点改动,这里是新语法:
0.stride(to: 10, by: 2)
和
Array(0.stride(to: 10, by: 2)) // is [0, 2, 4, 6, 8]
如果你看一下 here,你可以看到哪些类型符合 Strideable
协议。
正如@RichFox 指出的那样,在 Swift 3.0 中,语法变回了原始的全局函数形式,例如:
stride(from:0, to: 10, by: 2)
stride函数在swift 4.2
中的使用12345
2345
345
45
5
5
45
345
2345
12345
for i in 1...5{
for k in 1...i{
print(terminator : " ")
}
for j in stride(from: i, to: 6, by: 1){
print(j , terminator : "")
}
print(" ")
}
for i in stride(from: 5, to: 0, by: -1)
{
for k in 1...i{
print(terminator : " ")
}
for j in stride(from: i, to: 6, by: 1){
print(j,terminator : "")
}
print(" ")
}
1 2 3 4 5
2 3 4 5
3 4 5
4 5
5
5
4 5
3 4 5
2 3 4 5
1 2 3 4 5
for i in 1...5{
for k in 0...i{
print(terminator : " ")
}
for j in stride(from: i, to: 6, by: 1){
print(j , terminator : " ")
}
print(" ")
}
for i in stride(from: 6, to: 1, by: -1){
for k in 1...i{
print(terminator : " ")
}
for j in stride(from: i-1, to: 6, by: 1){
print(j , terminator : " ")
}
print(" ")
}