random k-sample of a file

[Andrei Alexandrescu]

Christopher Wright wrote:
> Andrei Alexandrescu wrote:
>>     enforce(k > 0, "Must pass a strictly positive selection size");
> 
> Out of curiosity, why are you using enforce rather than assert?

Enforce is never ignored, even in production builds. You wouldn't want a 
release build of your app to skip checking command line arguments.

> I've written an assertions framework, but it provides some more options 
> than assert:
> 
> expect.because ("Must pass a strictly positive selection size").that 
> (k).greaterThan (0);
> 
> If that failed, it would produce:
> AssertionException: Expected: greater than 0 but was: -4 -- Must pass a 
> strictly positive selection size

That looks pretty darn nice.


Andrei