IDE0057Language rules (expression-level preferences)

Use range operator

Description

This style rule concerns the use of the range operator (..), which is available in C# 8.0 and later.

Example

// csharp_style_prefer_range_operator = true
string sentence = "the quick brown fox";
var sub = sentence[0..^4];

// csharp_style_prefer_range_operator = false
string sentence = "the quick brown fox";
var sub = sentence.Substring(0, sentence.Length - 4);

Configurable options

Vote for the value each option should take in the generated .editorconfig.

csharp_style_prefer_range_operator

default: true

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