Ruby Script at Work
Lukhnos D. Liu
Chief, Lithoglyph Inc.

We’re an ObjC/C++ house...

I love C++...

Templates don’t scare me

for (vector<pair<pair<string, size_t>, set<Node>::const_iterator> >::iterator i = lst.begin()
; i != lst.end()
; ++i)
{
// iterate the list...
if (matches((*i).first.first)) {
run((*i).second);
}
}
* modified actual code

C++ is fast

Speed
Improvement
(higher is better)
ObjC 1.0 1x
C++ gen1 5.0 5x
C++ gen2 20.0 20x
* tested on a 1 GHz PowerPC Mac

Can do everything

In OpenVanilla, We Have...
OVStringHelper::Split
OVStringHelper::Join
OVFileHelper::SlurpFile
OVUTF16::FromUTF8
OVStringHelper::StringByReplacingOccurancesOfString
WithString(src, occur, replacement)
... and more script-language perks!

</digress>

But...

(that’s why I’m here today!)

C++ needs lots of care

Turn-around speed is slow

Compliation is slooooooow

Bad for more than 1 tool

Choices: sh/Makefile/Ruby

Ruby is advanced

Clear structure

Easy to maintain

post-
processing
directives
aggregate
Data Set 1 tool
and rinse
Merged Processed
tool tool
Data Set Data Set
Data Set 4
cherry pick
Data Set 2
and rinse
Meged Separation
tool
Data Set Tool
Data Set 5
aggregate
Data Set 3
and rinse
Data Set 4 Data Set 5
Interm. merge tool
Data Set 6 conversion Data Set 7
Data Set
* actual process

Windows Build System
Source version- Versioned Validation and Dev Dev
Code upper Source Files Staging Packages
Mac OS X Build System
Data Set 7
* actual process

Ruby’s Drawbacks

Modules We Use
openssl
digest
uuidtools
Formosa::Mandarin (lukhnos)

Slow... Very slooooooow

String processing Performance
C++ 1 100%
Perl 0.75 75%
Ruby 0.20 20%
* estimation on daily use cases

Total time =
run time x frequency of run

Won’t deploy to users

Future Plans

My Question...

pair<T, T> equivalent?

Questions