4.18 argsize - Number of Arguments

Format 1: argsize( $str_1,str_2,\cdots$ )

Return the number of character strings specified by $str_ i$ . The column names can be specified using wildcard. It is possible to count the number of items using wild card. An important point to note is that this function is only compatible with character string format.

Example

Example 1: Basic Example

Count the number of column names that start with "v".

$ more dat1.csv
id,v1,v2,v3
1,1,2,3
2,-5,2,1
3,1,,3
4,,,
$ mcal c='argsize($s{v*})' a=rsl i=dat1.csv o=rsl1.csv
#END# kgcal a=rsl c=argsize($s{v*}) i=dat1.csv o=rsl1.csv
$ more rsl1.csv
id,v1,v2,v3,rsl
1,1,2,3,3
2,-5,2,1,3
3,1,,3,3
4,,,,3