Strings and the CLR – A Special Relationship

Re:Strings and the CLR – A Special Relationship by jsingleton on Wednesday June 01, 2016 @08:44AM (#11813893)

No, I wasn't suggesting that you could implement the same high-performance System.String in IL, especially considering the assembly language used. I was just saying that there are many other things that can't be done in C# but are possible in .NET, using other languages.

BTW there is a typo: "passed in my the calling code" should probably be "passed in by the calling code".

I wonder if the new C# 6 string interpolation also uses string builder like format does. e.g.

  $"Name = {name}, hours = {hours:hh}"

https://msdn.microsoft.com/en-us/library/Dn961160.aspx

This post seems to suggest it uses concatenation, which may be bad for performance in some situations due to the immutability.

https://weblogs.asp.net/bleroy/c-6-string-interpolation-is-n...

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Re:Strings and the CLR – A Special Relationship by matthewwarren on Wednesday June 01, 2016 @09:08AM (#11814034)

I just did a quick test with Reflector and it looks like string interpolation is turned into String.Format(..) calls, which in turn will use StringBuilder. This makes sense as String.Format(..) understands all the string formatting placeholders.

> BTW there is a typo: "passed in my the calling code" should probably be "passed in by the calling code".

Thanks for spotting that, I'll fix it in a bit

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