Read lines from a file or string by chunk.
read_lines_chunked( file, callback, chunk_size = 10000, skip = 0, locale = default_locale(), na = character(), progress = show_progress() ) read_lines_raw_chunked( file, callback, chunk_size = 10000, skip = 0, progress = show_progress() )
Either a path to a file, a connection, or literal data (either a single string or a raw vector).
Files ending in
Literal data is most useful for examples and tests. It must contain at least one new line to be recognised as data (instead of a path) or be a vector of greater than length 1.
Using a value of
A callback function to call on each chunk
The number of rows to include in each chunk
Number of lines to skip before reading data.
The locale controls defaults that vary from place to place.
The default locale is US-centric (like R), but you can use
Character vector of strings to interpret as missing values. Set this
Display a progress bar? By default it will only display
in an interactive session and not while knitting a document. The display
is updated every 50,000 values and will only display if estimated reading
time is 5 seconds or more. The automatic progress bar can be disabled by