Swift memdump. I was bored and wanted to learn swift syntax

memdump.swift

import Foundation

let bytes = 16
let rows = 8
let sep = 4

let bytesPointer = UnsafeMutableRawPointer.allocate(bytes: 1, alignedTo: 1)
bytesPointer.storeBytes(of: 0xff, as: UInt8.self)
var c = 0
var a = 0

print("                   ", terminator: "")
for x in 0 ..< bytes {
    var str = String(format:"%X", x)
    str = str.padding(toLength:2,withPad:" ",startingAt:0)
    if (x % sep)==0 {print(" ", terminator: "")}
    print(str, terminator: "")
}
print("    ", terminator: "")
for x in 0 ..< bytes {
    var str = String(format:"%X", x)
    if (x % sep)==0 {print(" ", terminator: "")}
    print(str, terminator: "")
}
print()
for x in stride(from:0,to:bytes*(rows),by:bytes){
    let offsetptr = bytesPointer+(x)
    print("\(offsetptr) ", terminator: "")
    for y in 0 ..< bytes {
        let yptr = offsetptr+y
        let v = yptr.load(as:UInt8.self)
        let str = String(format:"%02X", v)
        if (y % sep)==0 {print(" ", terminator: "")}
        print(str, terminator: "")
    }
    print("    ", terminator: "")
    for y in 0 ..< bytes {
        let yptr = offsetptr+y
        let v = yptr.load(as:UInt8.self)
        var str = String(UnicodeScalar(v))
        if let range = str.range(of:"\\p{L}",options: [.regularExpression]){
            str = str.substring(with:range)
        } 
        if str.range(of:"\\p{L}",options: [.regularExpression]) == nil || v<32 || v==127 {
            str = "."
        }
        if (y % sep)==0 {print(" ", terminator: "")}
        print(str, terminator: "")
    }
    print()
}