String.Copy alternative for dotnet core

Question

I'm trying to get the following code to work in dotnet core running on ubuntu linux - but getting a "string does not contain a definition for copy" compile error on this line - where apparently String.Copy is not supported in dotnet-core:

         Attendance = String.Copy(markers) };

What are the best ways of doing a shallow string copy in dotnet Core? Should I use string.CopyTo?

Thanks

//I want to add an initial marker to each record
//based on the number of dates specified
//I want the lowest overhead when creating a string for each record

string markers = string.Join("", dates.Select(p => 'U').ToArray());
return logs.Aggregate( new List<MonthlyAttendanceReportRow>(), (rows, log) => {
     var match = rows.FirstOrDefault(p => p.EmployeeNo == log.EmployeeNo);
     if (match == null) {
         match = new MonthlyAttendanceReportRow() {
             EmployeeNo = log.EmployeeNo,
             Name = log.FirstName + " " + log.LastName,
             Attendance = String.Copy(markers) };
         rows.Add(match);
     } else {
     }
     return rows;
 });

Possible duplicate of [How to do String.Copy in .net core?](http://stackoverflow.com/q/41758338/213550) — VMAtm, Apr 26 '17 at 00:06
Similar question yes, but this one was asked 2 months before the other one? Not sure how to handle this. — onemorecupofcoffee, Apr 26 '17 at 13:57

score 3 · Answer 1 · edited Mar 14 '19 at 18:54

To complete Rogerson's answer, you can have an extension method which will do the exact thing that you are looking for.

using System;
using System.IO;
using System.Linq;
using System.Collections.Generic;

namespace CSharp_Shell
{
public static class ext{
    public static string Copy(this string val){
        return new String(val.ToArray());
    }
}

    public static class Program 
    {
        public static void Main() 
        {
            string b = "bbb";
            var a = b.Copy();
            Console.WriteLine("Values are equal: {0}\n\nReferences are equal: {1}.", Object.Equals(a,b), Object.ReferenceEquals(a,b));
        }
    }
}

score 2 · Accepted Answer · edited Sep 12 '19 at 07:59

2

Try this:

string b = "bbb";
var a = new String(b.ToArray());
Console.WriteLine("Values are equal: {0}\n\nReferences are equal: {1}.", Object.Equals(a,b), Object.ReferenceEquals(a,b));

You can see it running on this fiddle.

edited Sep 12 '19 at 07:59

Ali Alp

691
7
10

answered Apr 25 '17 at 20:13

Rogerson Nazário

331
5
15

String.Copy alternative for dotnet core

2 Answers2