/ csv parser - e exclusive
getrange: {[str;s;e] s_(e-1)#str};

lines: 0: "tempST.csv";

/csv parser
parsel: {[l] comi: &l=",";comi+:1;r: 2':!#comi;r: comi@r;r: (1 2#(0;r[0;0])),r;getrange[l].'r}
parsel'lines

/ / how the parser works
/ t: lines[0];
/ comi: &t=","; / commas idx
/ comi+:1; / help exlude commas (later use -1 on upper)
/
/ r: 2':!#comi; / ranges of comma separated parts
/ r: comi@r; / apply ranges to comma idx
/ r: (1 2#(0;r[0;0])),r; / add 0-first comma range
/ getrange[t].'r