नमस्कार! 

Sameer Deshmukh @v0dro @v0dro 

Pune | पुणे 

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Ruby Science Foundation www.sciruby.com @sciruby @sciruby 

Ruby speed reliability C 

Ruby speed reliability C Nokogiri Nokogiri::XML() fast_blank String#blank? libxml Handwritten C 

Rubex: Highly productive C extensions. 

Rubex code C code CRuby runtime Language which looks like Ruby. Code ready to interface with Ruby. Code actually runs here. 

def fibo(n) a, b, i, temp = 1, 1, 0, nil print a, "\n" print b, "\n" while i < n do temp = b b = a + b a = temp i += 1 print b, "\n" end end fibo(10); 

VALUE cfibo(VALUE obj_n, VALUE self) { int n = INT2FIX(obj_n); int i = 0, a = 1, b = 1, temp = 0; printf("%d\n", a); printf("%d\n", b); while (i < n) { temp = b; b = a + b; a = temp; i += 1; print("%d\n", b); } return self; } Init_fibo(void) { rb_define_global_function("fibo", cfibo, 1); } 

BIG Problems ● Difficult and irritating to write. ● Debugging is time consuming. ● Remember the CRuby C API. ● Need to care about small things.™* *Matz. 

def fibo(int n) int a = 1, b = 1, i = 0, temp = 0 print a, "\n" print b, "\n" while i < n do temp = b b = a + b a = temp i += 1 print b, "\n" end end 

def fibo(int n) int a = 1, b = 1, i = 0, temp = 0 print a, "\n" print b, "\n" while i < n do temp = b b = a + b a = temp i += 1 print b, "\n" end end 

Salient Features ● Looks exactly like Ruby but with the ability to declare C types. ● Implicit, transparent conversion and interfacing between Ruby and C. ● Compiles to C code so is super fast. ● Simple and intuitive interfaces to the Ruby GC. ● Interface with external C libraries. 

https://github.com/v0dro/rubex 

Functional libcsv wrapper Ruby gem in examples/ folder written entirely in Rubex. 

I haz SciRuby stickers. ^_^ 

THANK YOU!