This function consults the option readr.read_lazy
to figure out whether to
do lazy reading or not. If the option is unset, the default is FALSE
,
meaning readr will read files eagerly, not lazily. If you want to use this
option to express a preference for lazy reading, do this:
Typically, one would use the option to control lazy reading at the session,
file, or user level. The lazy
argument of functions like read_csv()
can
be used to control laziness in an individual call.
See also
The blog post "Eager vs lazy reading in readr 2.1.0" explains the benefits (and downsides) of lazy reading.