◆ ruby bench.rb 
                      Results |
-------------------------------
single                  0.152 |
single colon3           0.151 |
colon2                  0.239 |
colon3                  0.243 |
                      Results |
-------------------------------
single                  0.150 |
single colon3           0.151 |
colon2                  0.241 |
colon3                  0.240 |
                      Results |
-------------------------------
single                  0.152 |
single colon3           0.149 |
colon2                  0.237 |
colon3                  0.236 |
                      Results |
-------------------------------
single                  0.150 |
single colon3           0.153 |
colon2                  0.239 |
colon3                  0.260 |
                      Results |
-------------------------------
single                  0.160 |
single colon3           0.148 |
colon2                  0.237 |
colon3                  0.246 |
[headius @ cnutter:~/projects/jruby]
◆ jruby bench.rb 
                      Results |
-------------------------------
single                  0.096 |
single colon3           0.120 |
colon2                  0.223 |
colon3                  0.327 |
                      Results |
-------------------------------
single                  0.091 |
single colon3           0.113 |
colon2                  0.196 |
colon3                  0.310 |
                      Results |
-------------------------------
single                  0.087 |
single colon3           0.114 |
colon2                  0.196 |
colon3                  0.313 |
                      Results |
-------------------------------
single                  0.105 |
single colon3           0.120 |
colon2                  0.201 |
colon3                  0.322 |
                      Results |
-------------------------------
single                  0.094 |
single colon3           0.120 |
colon2                  0.202 |
colon3                  0.316 |