C# scripting - How to output a dynamically created list of strings?

Question

I would like to output a list (C# Scripting), which contains elements of objects' names. Since this list is generating dynamacally, I just get a output in every single line. This is my code:

public static List<string> myList= new List<string>();
//...
public static void myMethod (Renderer[] renderers) {
        foreach (var renderer in renderers) {
            if (IsVisible(renderer)) {
                //print (renderer.name + " is visible!");
                myList.Add (renderer.name);
            }
            print (myList);
        }
        myList.Clear ();
        print ("--");
       }

The output is like System.Collections.Generic.List'1[System.String]in every line. After a reseach I also tried

foreach (var item in myList) {
      print (item);
}

This method prints every object in a single line. But I want all names of the objects to be together in one line until there will be "--" printed. How can I realize it? Thanks!

Example:

output now:

object0 
object1
object2
etc.

what I want to achive: object0, object1, object2, etc.

what's this print ? Console.Write ? What type of application is this winforms/console/web ? — Krishna
– Krishna, Commented Jul 13, 2017 at 9:59
From msdn.microsoft.com/fr-fr/library/57a79xd0(v=vs.110).aspx Console.Writeline(string.Join(",", myList.ToArray()); — Guillaume Beauvois
– Guillaume Beauvois, Commented Jul 13, 2017 at 10:02
@JuanFerrer print comes from using System.Collections.Generic; — Viktoria
– Viktoria, Commented Jul 13, 2017 at 10:02
@Krishna it's like Debug.Log(), I'm developing in MonoDevelop for the game engine Unity3D. — Viktoria
– Viktoria, Commented Jul 13, 2017 at 10:04

ZarX · Accepted Answer · 2017-07-13 10:15:20Z

1

You can print all the names of visible renderers with the following code using String.Join and LINQ

public static void myMethod(Renderer[] renderers)
{
    print(string.Join(",", renderers.Where(IsVisible).Select(r => r.name)));
    print("--");
}

This should output:

object1,object2,object3
--

edited Jul 13, 2017 at 10:15

answered Jul 13, 2017 at 10:08

ZarX

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2 Comments

Viktoria Over a year ago

A very smart solution, thnak you!

Cleptus Over a year ago

@Viktoria BTW your error was in calling print (myList); inside the foreach loop. You should have done it after the loop, when all items were already added, You could either put it after or change that line to Print(renderer.name);

jparaya · Accepted Answer · 2017-07-13 10:02:01Z

1

You can use String.Join method. It recevies the separator and an array of strings as parameters. For example:

print(String.Join(", ", myList.ToArray());

answered Jul 13, 2017 at 10:02

jparaya

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2 Comments

Viktoria Over a year ago

This works nearly perfect. But now I get an output like object0 (newline) object0, object1 (newline) object0, object1, object2 ...

jparaya Over a year ago

do not execute the print for each element. You need to execute the print at the end of the loop, once the list is filled

cSharma · Accepted Answer · 2017-07-13 10:30:04Z

1

If your output coming as a string then u have to take one string variable and concatenate all items with "--" into the variable.

string temp = string.Empty;
foreach(var item in items)
{
   temp += item + "--";
}

print(temp)

answered Jul 13, 2017 at 10:30

cSharma

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Comments

Mighty Badaboom · Accepted Answer · 2017-07-13 10:13:30Z

0

You can use string.Joinfor this.

string itemsInOneLine = string.Join(", ", myList);
print(itemsInOneLine);

For further information have a look at the MSDN string.Join page.

edited Jul 13, 2017 at 10:13

answered Jul 13, 2017 at 10:02

Mighty Badaboom

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3 Comments

Viktoria Over a year ago

I'm using a List<string> myList, not an Array

Viktoria Over a year ago

and Join needs as a second parameter an array.

Mighty Badaboom Over a year ago

string.Joinsupports List<string ;) Have a look at the MSDN, there is an overload: Join<T>(String, IEnumerable<T>) and List<string> is an IEnumerable

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