[R-Forge #2548] Add "key" argument to fread()

[arunsrinivasan]

Submitted by: Matt Dowle; Assigned to: Nobody; R-Forge link

To make the syntax easier (also if the expected key columns aren't present it can return earlier before starting to read the data) :

http://stackoverflow.com/a/14952167/403310

[MichaelChirico]

I want this! Paralelling data.table(...,key="key") should give cleaner code than setkey(fread(...),key)

[jangorecki]

@MichaelChirico If you use chaining you can also use fread(...)[, .SD,, "key"] which makes it a start point of chain for operations on sorted data.