4. http://twitter.com/#!/cactusman/status/9123744081510400

5. gist.github
https://gist.github.com/

6. https://gist.github.com/gists

7. Groovy

9. gist 310321
File.glob('**/[a-z]*.groovy')

10. gist 233429

11. import javax.sound.midi.*
def synth = MidiSystem.getSynthesizer()
synth.open()
def channel = synth.getChannels()[9]
channel.noteOn(56, 96)
Thread.sleep(100)
channel.noteOff(56)
synth.close()

12. gist 250489

13. score = [
[A2, d4], [A2, d4], [B2, d2],
[A2, d4], [A2, d4], [B2, d2],
[A2, d4], [B2, d4], [C2, d4], [B2, d4],
[A2, d4], [B2, d8], [A2, d8], [F1, d2],
[E1, d4], [C1, d4], [E1, d4], [F1, d4],
[E1, d4], [E1, d8], [C1, d8], [B1, d2],
[A2, d4], [B2, d4], [C2, d4], [B2, d4],
[A2, d4], [B2, d8], [A2, d8], [F1, d2],
[E1, d4], [C1, d4], [E1, d4], [F1, d4],
[E1, d4], [E1, d8], [C1, d8], [B1, d2],
[A2, d4], [A2, d4], [B2, d2],
[A2, d4], [A2, d4], [B2, d2],
[E1, d4], [F1, d4], [B2, d8], [A2, d8], [F1, d4],
[E1, d2], [null, d2],
]

14. gist 506855

15. import hudson.model.*
import hudson.slaves.*
node = new DumbSlave("testing", "Testing node",
"/home/hudson", "2", Node.Mode.NORMAL,
"test label", new JNLPLauncher(),
new RetentionStrategy.Always(),
new ArrayList())
hudson.model.Hudson.instance.addNode(node)

16. gist 702337

17. gist 524018

18. Newbie programmer
int factorial_newbie(int n) {
if (n == 0) {
return 1
} else {
return n * factorial_newbie(n - 1)
}
}
println factorial_newbie(6)

19. First year programmer,
studied Pascal
int factorial_pascal(int n) {
int result = 1;
for (int i = 1; i <= n; i++) {
result = result * i;
}
return result;
}
println factorial_pascal(6)

20. First year programmer,
studied C
int fact_c(int n) {
int result = 1;
for (int i = 1; i <= n; i++) {
result *= i;
}
return result;
}
println fact_c(6)

21. First year programmer,
Python
int Factorial_python(int n) {
int res = 1
(2..n).each { i ->
res *= i
}
return res
}
println Factorial_python(6)

22. Lazy Groovy programmer
int fact_lazy(int n) {
return (n <= 1) ? 1 : n * fact_lazy(n - 1)
}
println fact_lazy(6)

23. Lazier Groovy programmer
def factLazier = { (it <= 1) ? 1 : it * call(it - 1) }
println factLazier(6)

24. Groovy expert programmer
def factExpert = { n ->
n ? (1..n).inject(1, { a, b -> a * b }): 1 }
println factExpert(6)

25. Enterprise programmer
class InternalBase {
private int base
public InternalBase(Integer base) {
this.base = base.intValue()
}
int getBase() {
return new Integer(base)
}
}
class StandardMathematicsSystem {
private static StandardMathematicsSystem INSTANCE = null
private Integer base
private StandardMathematicsSystem(InternalBase base) throws RuntimeException {
if (base.getBase().compareTo(new Integer(2)) != 0) {
throw RuntimeException("Non base 2 bases are not supported.")
}
this.base = base.getBase()
}
int calculateFactorial(Integer target) {
Integer result = new Integer(1)
for (Integer i = new Integer(2); i.compareTo(target) <= 0; i = new Integer(i.intValue() + 1)) {
result = result * i
}
return result
}
static private StandardMathematicsSystem createInstance(InternalBase base) {
return new StandardMathematicsSystem(base)
}
static StandardMathematicsSystem getInstance(InternalBase base) {
if (INSTANCE == null) {
INSTANCE = createInstance(base)
}
return INSTANCE
}
}
println StandardMathematicsSystem.getInstance(new InternalBase(new Integer(2))).calculateFactorial(new Integer(6))

27. Gist

32. Gist G
Groovy G

34. gist 326626
groovywebconsole.user.js
Gist Groovy
Greasemonkey
for Firefox (not for Chrome)

35. Groovy Gist