bcolnames {bread}

Retrieve the column names directly from a big file without loading it in memory

Description

Simply reads the first line of a file with data.table::fread and the head Unix command. This allows analyzing big files that would not fit in memory (and cause an error such as 'cannot allocate vector of size').

Usage

bcolnames(file = NULL, ...)

Arguments

file

String. Name or full path to a file compatible with data.table::fread()

...

Arguments that must be passed to data.table::fread() like 'sep'.

Value

A character vector

Examples

file <- system.file('extdata', 'test.csv', package = 'bread')
## Retrieving the column names
bcolnames(file = file)