From: Gavin Sinclair <gsinclair@...>
Date: 2004-11-14T02:09:04+09:00
Subject: Re: assert

On Sunday, November 14, 2004, 3:48:28 AM, Florian wrote:

>> [ ... breakpoint_unless 'x + y == 10' ... ]
>>
>>   Breakpoint because 'x + y == 10' is false.
>>   irb>
>> 
>> Is that a convincing benefit?

> This does indeed sound nice.


>> Now let me ask you: since you proposed
>> 
>>   assume { x + y == 10 }
>> 
>> what does that provide over
>> 
>>   breakpoint unless x + y == 10
>> 
>> ?

> I think it looks nicer and it can be ignored if the code is not run in
> debug mode.

Are you suggesting that all breakpoint would only be enabled in debug
mode, or just the 'assume' ones?  What kind of debug mode do you mean?
$DEBUG?

> What would you think about an assume() method that could take either a
> block or a String?

I agree it looks nicer, but I feel that breakpoint_unless is actually
a more appropriate name, even though it's a little ugly.  'assume'
doesn't tell you what it does.  Setting breakpoints in this manner is
such a specific and irregular thing to do that I think the name needs
to be clear.

I'm happy with a method taking either a block or a string, though.

Gavin