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discard """
output: 9
"""
type DataTable = concept x
x is object
for f in fields(x):
f is seq
type Students = object
id : seq[int]
name : seq[string]
age: seq[int]
proc nrow*(dt: DataTable) : Natural =
var totalLen = 0
for f in fields(dt):
totalLen += f.len
return totalLen
let
stud = Students(id : @[1,2,3], name : @["Vas", "Pas", "NafNaf"], age : @[10,16,32])
echo nrow(stud)
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