with a pattern matching the field separators.
# given $RECORD with field separated by PATTERN,
# extract @FIELDS.
@FIELDS = split(/PATTERN/, $RECORD);
function takes up to three arguments:
parameter is the maximum number of fields to split into. (If the input contains more fields, they are returned unsplit in the final list element.) If
is omitted, all fields (except any final empty ones) are returned.
gives the string value to split. If
is a pattern matching the field separator. If
is omitted, contiguous stretches of whitespace are used as the field separator and leading empty fields are silently discarded.
If your input field separator isn't a fixed string, you might want
to return the field separators as well as the data by using parentheses in
to save the field separators. For instance:
returns the values:
(3, '+', 5, '-', 2)
To split colon-separated records in the style of the
@fields = split(/:/, $RECORD);
The classic application of
is whitespace-separated records:
@fields = split(/\s+/, $RECORD);
started with whitespace, this last use of
would have put an empty string into the first element of
would consider the record to have an initial empty field. If you didn't want this, you could use this special form of
@fields = split(" ", $RECORD);
This behaves like
with a pattern of
, but ignores leading whitespace.
When the record separator can appear in the record, you have a problem. The usual solution is to escape occurrences of the record separator in records by prefixing them with a backslash. See