A review of data.table (1.7.10)

5

Excellent

data.table is a perfect combination of useability and speed. The query syntax is very intuitive, the printing is smart, and the performance is much better than data.frame.

data.table provides SQL-like functionality for R that is flexible, fast, and syntactically consistent.

The time-series join capability saves me no-end of headaches - it is essential functionality for time-series analysis.

I doubt I will ever go back to data.frame