用大数字作为数组的键名的坑

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tmplinshi
Posts: 1092
Joined: 01 Oct 2013, 14:57

用大数字作为数组的键名的坑

14 Nov 2017, 00:31

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n := "448045523405"
obj := {}
obj[n] := "abc"

MsgBox, % obj[n] ; 结果为 abc,正常。

for k, v in obj
MsgBox, % k "=" v ; 但是这里显示的是 1368924621=abc


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解决方法:键名前面加上非数字,或者键名两边加引号

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xuezhe
Posts: 79
Joined: 06 Jan 2016, 11:02

Re: 用大数字作为数组的键名的坑

14 Nov 2017, 03:46

这是漏洞吗。最好报告给ahk作者呀。这是L V1 的漏洞,估计作者也不升级了。

我用V2运行结果正常,没有上面的问题。

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jeeswg
Posts: 2961
Joined: 19 Dec 2016, 01:58
Location: UK

Re: 用大数字作为数组的键名的坑

14 Nov 2017, 07:45

Objects
https://autohotkey.com/docs/Objects.htm
•Integer keys are stored using the native signed integer type. AutoHotkey 32-bit supports integer keys in the range -2147483648 to 2147483647. AutoHotkey supports 64-bit integers, but only AutoHotkey 64-bit supports the full range as keys in an object.

Objects
https://lexikos.github.io/v2/docs/Objects.htm
•Integer keys are stored using the native signed integer type where possible. Integers which are less than -2147483648 or greater than 2147483647 are stored as strings on AutoHotkey 32-bit but as integers on AutoHotkey 64-bit. (By contrast, 64-bit integers can be stored as values on either version.)

Cheers. 干杯。
tmplinshi
Posts: 1092
Joined: 01 Oct 2013, 14:57

Re: 用大数字作为数组的键名的坑

14 Nov 2017, 10:18

Oh, thank you jeeswg! This is exactly the document I was looking for.

@xuezhe 我猜测会有相应的文档说明,jeeswg帮忙找出来了 :)

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