Writing files to disk
fwrite()
is a parallel file writer, and like fread()
, it also has intelligent defaults.
For example, print dt
in your console and notice that the column name
has the first and last names separated with a ,
and the column val
is of type list
. fwrite()
can automatically quote name
column and add a secondary separator (the symbol for OR operator, |
) for the list column.
This exercise is part of the course
Data Manipulation with data.table in R
Exercise instructions
- Write
dt
to disk using the file name"fwrite.txt"
. - Import the file using
readLines()
to verify that thename
column is quoted automatically and the list column is separated with|
. - Import the file using
fread()
.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
# Write dt to fwrite.txt
___(___, "___")
# Import the file using readLines()
___("fwrite.txt")
# Import the file using fread()
___("fwrite.txt")