C#

Pete O'Hanlon wrote:

For a lot of people, upgrading to the latest version of C# will be a prohibited move due to workspace constraints.

MyStringResource = "A problem occured in {0}."

string location = "an undefined place";
string message = string.Format(Resources.MyStringResource, location);

Sascha Lefèvre wrote:

interpolation built into C# 6,

public static string
Format
(
  this string              Format
,
  System.Collections.IList Parameter
)

PIEBALDconsult wrote:

The ability to compile against older versions

PIEBALDconsult wrote:

I use the oldest compiler that does what I need.

Richard Deeming wrote:

ASP.NET sites - particularly "Web Site" projects - are also an issue.

Richard Deeming wrote:

String interpolation won't work if you're targeting anything before .NET 4.6, unless you add specific classes[^] to your project.

BillWoodruff wrote:

The new syntax looks more "elegant,"

BillWoodruff wrote:

I hope you will publish whatever you are doing with formatting.

GravityPhazer wrote:

There are situations, though, when you have to use string.Format() or custom implementations.

Write($"Test is {(isTest ? "enabled" : "disabled")}");

string text = "Test is {enabled}. Also {foo}.".XFormat(new
{
    enabled = isTest ? "enabled" : "disabled",
    foo = some.Really.Deep.Nested.Value[index]
});

var myString = "Test value 1 is {0} and value two is {1}".FormatWith(value1, value2);