Re: std.algorithm

[Meta via Digitalmars-d-learn]

On Thursday, 30 November 2017 at 20:49:36 UTC, flamencofantasy 
wrote:
Hello,

I have the following csv text;
auto input = "Start Date,End Date,Subject,All day 
event,Categories,Show time as
1/1/2018,1/1/2018,New Year's Day,TRUE,Holiday,3
1/15/2018,1/15/2018,\"Martin Luther King, Jr. 
Day\",TRUE,Holiday,3
2/19/2018,2/19/2018,President's Day,TRUE,Holiday,3
5/28/2018,5/28/2018,Memorial Day,TRUE,Holiday,3
7/4/2018,7/4/2018,Independence Day,TRUE,Holiday,3
9/3/2018,9/3/2018,Labor Day,TRUE,Holiday,3
11/22/2018,11/22/2018,Thanksgiving Day,TRUE,Holiday,3
11/23/2018,11/23/2018,Day after Thanksgiving,TRUE,Holiday,3
12/24/2018,12/24/2018,Christmas Eve,TRUE,Holiday,3
12/25/2018,12/25/2018,Christmas Day,TRUE,Holiday,3";

What is the most clean compact efficient/lazy way to produce a 
range that removes the first line and then retains the second 
and third columns of the following lines, basically producing 
this;


"1/1/2018,New Year's Day
1/15/2018,\"Martin Luther King, Jr. Day\"
2/19/2018,President's Day
5/28/2018,Memorial Day
7/4/2018,Independence Day
9/3/2018,Labor Day,TRUE
11/22/2018,Thanksgiving Day
11/23/2018,Day after Thanksgiving
12/24/2018,Christmas Eve
12/25/2018,Christmas Day"

Thanks a bunch

This *almost* works:

import std.algorithm;
import std.range;
import std.stdio;
import std.string;

void main()
{
        auto input = "Start Date,End Date,Subject,All day 
event,Categories,Show time as
                1/1/2018,1/1/2018,New Year's Day,TRUE,Holiday,3
                1/15/2018,1/15/2018,\"Martin Luther King, Jr. 
Day\",TRUE,Holiday,3
                2/19/2018,2/19/2018,President's Day,TRUE,Holiday,3
                5/28/2018,5/28/2018,Memorial Day,TRUE,Holiday,3
                7/4/2018,7/4/2018,Independence Day,TRUE,Holiday,3
                9/3/2018,9/3/2018,Labor Day,TRUE,Holiday,3
                11/22/2018,11/22/2018,Thanksgiving 
Day,TRUE,Holiday,3
                11/23/2018,11/23/2018,Day after 
Thanksgiving,TRUE,Holiday,3
                12/24/2018,12/24/2018,Christmas Eve,TRUE,Holiday,3
                12/25/2018,12/25/2018,Christmas 
Day,TRUE,Holiday,3";

        input.lineSplitter()
                .dropOne()
                .map!(l =>
                        l.splitter(',')
                         .dropOne()
                         .take(2)
                         .joiner(","))
                .each!writeln();
}

The only problem is the comma in Martin Luther King, Jr. Day, so 
that line comes out as `1/15/2018,"Martin Luther King`.