Need a Faster Compressor

Era Scarecrow via Digitalmars-d digitalmars-d at puremagic.com
Sun May 22 03:32:13 PDT 2016


On Sunday, 22 May 2016 at 10:12:11 UTC, Marco Leise wrote:
>> Question Walter (or Andrei): Would it be terrible to have 
>> lower characters as part of the identifier string? I'm 
>> referring to characters under 32 (control characters, 
>> especially the \r, \n and \t).
>
> That would be my question, too. What is the allowed alphabet? 
> Control characters might break output of debuggers, and spaces 
> would also look confusing. So I guess everything in the range  
> (95 symbols)?

  Actually if compressed text (which uses symbols 128-155) are 
okay, then that gives us closer to 223 symbols to work with, not 
95.

  Curiously the extra 95 symbols actually is just enough to keep 
compression up and bring speed to about 37% speed gain, with it 
looks like no disadvantages. Then again I still need a larger set 
to test things on, but it's very promising!


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