Hi All,

 Request you help on the below program as it error out with the below error

Error:
UDictCompression.d(31): Error: template UDictCompression.compress cannot deduce function from argument types !()(string), candidates are:
UDictCompression.d(19):        UDictCompression.compress(T)(Array!T col)

Program:
import std.algorithm: countUntil, joiner, sort, uniq, map;
import std.csv: csvReader;
import std.stdio: File, writeln;
import std.typecons: Tuple, tuple;
import std.meta: AliasSeq;
import std.container.array;

alias ColumnTypes = AliasSeq!(string, string, int);
alias Arr(T) = Array!T;

auto readData() {
auto file = File("C:\\Users\\bheev1\\Desktop\\Current\\Script\\Others\\TColRead.csv", "r");
Arr!(Tuple!ColumnTypes) res;
foreach (record; file.byLineCopy.joiner("\n").csvReader!(Tuple!ColumnTypes))
	{ res.insertBack(record); }	
	return res;
}

auto compress(T)(Array!T col) {
    Arr!int ks; Array!T vals;
    vals.insertBack(sort(col.dup[]).uniq);
	ks.insertBack(col.map!(v => vals.countUntil(v)));
	return tuple(vals, ks);
}

void main() {
	auto columns = readData[];
	foreach(r; columns)
	{
		foreach(i, ColT; ColumnTypes) {
			auto vk = compress(r[i]);
			writeln(vk[0][], vk[1][]);
			}
	}
}

From,
Vino.B

On Saturday, 6 January 2018 at 15:26:30 UTC, Vino wrote:
> Hi All,
>
>  Request you help on the below program as it error out with the below error
>
> [...]

Hi All,

 Thank you was able to resolve the issue.

From,
Vino.B