pydata/pandas — pull request #5970 by jreback (2014-01-16 16:35:58+00:00)
Title: PERF: perf improvments in dtypes/ftypes methods (GH5968)

closes #5968

```
-------------------------------------------------------------------------------
Test name | head[ms] | base[ms] | ratio |
-------------------------------------------------------------------------------
frame_dtypes | 0.2654 | 51.2140 | 0.0052 |
frame_wide_repr | 17.1947 | 525.7313 | 0.0327 |
-------------------------------------------------------------------------------
Test name | head[ms] | base[ms] | ratio |
-------------------------------------------------------------------------------

Ratio < 1.0 means the target commit is faster then the baseline.
Seed used: 1234

Target [6a7bfc1] : PERF: perf improvments in dtypes/ftypes methods (GH5968)
Base [2081fcc] : Merge pull request #5951 from y-p/PR_latest_ipython_rep_fixes

CLN: repr_html raises NotImplementedError rather then ValueError in qtconsole
```