What’s New in C# 10: Create Constants Using String Interpolation
source link: http://dontcodetired.com/blog/post/Whats-New-in-C-10-Create-Constants-Using-String-Interpolation
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What’s New in C# 10: Create Constants Using String Interpolation
This is part of a series on the new features introduced with C# 10.
Prior to C# 10 if you wanted to create a const that was made up from other constants you had to add the string fragments togeter, for example (C# 9):
const string SupportedCurrencyCodes = "GPB, USD, AUD";const string Copyright = "Jason Roberts";const string TwitterSupportAccount = "@RobertsJason";const string AboutMessage = "Currency codes supported '"+ SupportedCurrencyCodes+ "'. Support via Twitter: " + TwitterSupportAccount+ ". Copyright 2022 " + Copyright + ".";This is a bit messy and hard to read.
From C# 10 you can create a constant using string interpolation as you would do with a normal variable, for example in C# 10:
const string SupportedCurrencyCodes = "GPB, USD, AUD";const string Copyright = "Jason Roberts";const string TwitterSupportAccount = "@RobertsJason";const string AboutMessage = $"Currency codes supported '{SupportedCurrencyCodes}'. Support via Twitter: {TwitterSupportAccount}. Copyright 2022 {Copyright}.";Even thought the line is a bit longer (horizontally) it is easier to understand the entire string. One caveat with this is that all the values in the braces have to be string contants - you can’t use number constant for example in a const interpolated string.
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