Comma-separated value

The CSV and tab-separated value (TSV) files are supported.

Operations

csv() - instantiate a new CSV stream

Returns a new input stream that can accept a CSV file and output its values. The first array passed to the stream should contain the types of each column. Types are strings, integers, floats, etc. Next, it can read an entire CSV file that consists of the headers and the rows.

./streem medicines.strm

Here’s the input file ‘medicines.csv’.

id,social security number,medicine,start date,end date
1,01010111111,vitamin bears,20250822,20251128
2,22020222222,fluoride tablets,20250111,
3,01010111111,cod liver oil,20250601,20250630

It can be read, and all values are piped to the standard output.

data = csv()
["integer,string,string,time,time"] | data
stream = fread("medicines.csv") | data
stream | stdout

# Output:
# ["integer", "string", "string", "time", "time"]
# [integer:"integer", string:"social security number", string:"medicine", time:"start date", time:"end date"]
# ["1", "01010111111", "vitamin bears", "20250822", "20251128"]
# ["2", "22020222222", "fluoride tablets", "20250111", ""]
# ["3", "01010111111", "cod liver oil", "20250601", "20250630"]