Hi,

On May 21, 2011, at 2:34 PM, 王雷 wrote:

> Hi,
> 
> 
>    Thanks for the fast reply.   How to figure out the version requirement
> is less than 1.5.0. Is there any document specify this? Thanks again.

It's what "~>" means in rubygems. If you want to learn more about rubygems, the 
documentation is at

http://docs.rubygems.org/

Rhett

> 
> 
>    Best Regards
> 
> 
>                Lei Wang.
> 
> 2011/5/20 Rhett Sutphin <[email protected]>
> 
>> Hi,
>> 
>> On May 19, 2011, at 5:27 PM, 王雷 wrote:
>> 
>>> Hi,
>>> 
>>>   I find in the apache ODE Rakefile the following line. What does this
>>> line mean? Thanks.
>>> 
>>> 
>>>   gem "buildr", "~>1.4.3"
>> 
>> That means it uses the buildr gem at version greater than or equal to 1.4.3
>> but less than 1.5.0.
>> 
>> Rhett
>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>>   Best Regards
>>> 
>>> 
>>> 
>>>                    Lei Wang
>> 
>> 

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