countLines
From R.utils v1.12.0
by Henrik Bengtsson
Counts the number of lines in a text file
Counts the number of lines in a text file by counting the number of occurances of platform-independent newlines (CR, LF, and CR+LF [1]), including a last line with neither. An empty file has zero lines.
- Keywords
- programming
Usage
## S3 method for class 'default':
countLines(file, chunkSize=5e+07, ...)
Arguments
- file
- A
connection
or a pathname. - chunkSize
- The number of bytes read in each chunk.
- ...
- Not used.
Value
- Returns an non-negative
integer
.
References
[1] Page Newline, Wikipedia, July 2008.
Examples
pathname <- system.file("NEWS", package="R.utils");
n <- countLines(pathname);
n2 <- length(readLines(pathname));
stopifnot(n == n2);
Community examples
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