JuliaStats/DataFrames.jl — pull request #376 by jvns (2013-10-11 22:05:13+00:00)
Title: Display a summary if there are more than 15 columns. Fixes #373.

Here's a start. Now the output when there are more than 15 columns is something like:

```
DataFrame with 10000 rows, 52 columns
Columns:

Unique Key 10000 non-null values
Created Date 10000 non-null values
Closed Date 4247 non-null values
Agency 10000 non-null values
Agency Name 10000 non-null values
Complaint Type 10000 non-null values
Descriptor 10000 non-null values
Location Type 6354 non-null values
Incident Zip 8633 non-null values
```

15 is chosen kind a bit arbitrarily -- it would be better to figure out the terminal width and make a smart decision.

I've also added a new function `column_summary` which isn't the best since there's already `summarize` and `dump`