[英]Convert hex to decimal in swift
how to convert hex to decimal in swift? 如何在swift中将十六进制转换为十进制?
I have string "423fdf4dfb1115" and I need get this => 18647576781459733. 我有字符串“423fdf4dfb1115”,我需要得到这个=> 18647576781459733。
I try this: 我试试这个:
let result = UInt8(strtoul("423fdf4dfb1115", nil, 16))
but app crash... 但是app崩溃......
I use this online convert: http://www.binaryhexconverter.com/hex-to-decimal-converter 我使用这个在线转换: http : //www.binaryhexconverter.com/hex-to-decimal-converter
The result must be UInt64
( UInt8.max
is 255). 结果必须是
UInt64
( UInt8.max
是255)。
There is a convenience initializer, strtoul
is not needed. 有一个方便的初始化程序,不需要
strtoul
。
let string = "423fdf4dfb1115"
let result = UInt64(string, radix:16)
let result = UInt64(strtoul("423fdf4dfb1115", nil, 16))
You need to get Int so better to use Int()
and should say it's hex radix: 16
Like below. 你需要让Int更好地使用
Int()
并且应该说它是十六进制radix: 16
如下所示。
Swift 3 斯威夫特3
let result = "423fdf4dfb1115"
let intResult = Int(result , radix: 16)
print(intResult)
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