swfit - why global static variable is not init? : ## Problem ##

* SomeTimes (maybe thread) ***kIndexMinID , kIndexMaxID*** value is **"0"**

## Code ##

```
// test.swift
let kIndexMinID :Int	= 100
let kIndexMaxID :Int	= 200
```

## Question ##
* why not init value? (when init?)
* how to global variable init ?
