Swift 数组与 C 的互操作性

Swift 数组与 C 的互操作性

swift
import Foundation
func createSwiftArrayFromCArray() -> [Int] {
    let cArray: [Int32] = [1, 2, 3, 4, 5] // C 数组
    let count = cArray.count
    
    let swiftArray = cArray.withUnsafeBufferPointer { buffer -> [Int] in
        let baseAddress = buffer.baseAddress!
        let bufferPointer = UnsafeBufferPointer(start: baseAddress, count: count)
        return Array(bufferPointer)
    }
    
    return swiftArray
}
let array = createSwiftArrayFromCArray()
print(array) // 输出 [1, 2, 3, 4, 5]

swift
import Foundation
func createCArrayFromSwiftArray(swiftArray: [Int]) -> [Int32] {
    var cArray = [Int32](repeating: 0, count: swiftArray.count)
    
    cArray.withUnsafeMutableBufferPointer { buffer in
        for (index, value) in swiftArray.enumerated() {
            buffer[index] = Int32(value)
        }
    }
    
    return cArray
}
let swiftArray = [1, 2, 3, 4, 5]
let cArray = createCArrayFromSwiftArray(swiftArray: swiftArray)
for value in cArray {
    print(value) // 输出 1, 2, 3, 4, 5
}