## 用大数字作为数组的键名的坑

tmplinshi
Posts: 1278
Joined: 01 Oct 2013, 14:57

### 用大数字作为数组的键名的坑

Code: Select all

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

Code: Select all

n1 := "448045523405"
n2 := "1368924621"

obj := {}
obj[n1] := "abc"
obj[n2] := "efg"

MsgBox, % obj[n1] ; 结果变成了 efg

; 只有一个键值：1368924621=efg
for k, v in obj
MsgBox, % k "=" v

Code: Select all

n1 := "448045523405"
n2 := "1368924621"

obj := {}
obj["" n1 ""] := "abc"
obj["_" n2] := "efg"

MsgBox, % obj[n1] ; 结果为空
MsgBox, % obj["" n1 ""] ; 结果为abc
MsgBox, % obj["_" n2] ; 结果为efg

; 448045523405=abc
; _1368924621=efg
for k, v in obj
MsgBox, % k "=" v
xuezhe
Posts: 87
Joined: 06 Jan 2016, 11:02

### Re: 用大数字作为数组的键名的坑

Code: Select all

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

MsgBox  obj[n] ; 结果为 abc，正常。

for k, v in obj
MsgBox  k "=" v  ; 448045523405=abc

n1 := "448045523405"
n2 := "1368924621"

obj := {}
obj[n1] := "abc"
obj[n2] := "efg"

MsgBox obj[n1] ; abc
jeeswg
Posts: 5267
Joined: 19 Dec 2016, 01:58
Location: UK

### Re: 用大数字作为数组的键名的坑

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: 1278
Joined: 01 Oct 2013, 14:57

### Re: 用大数字作为数组的键名的坑

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