Fred Tingaud 51369b610e
Make sure that includes are always surrounded by empty lines (#2270)
When an include is not surrounded by empty lines, its content is inlined
on the same line as the adjacent content. That can lead to broken tags
and other display issues.
This PR fixes all such includes and introduces a validation step that
forbids introducing the same problem again.
2023-06-22 10:38:01 +02:00

42 lines
1.2 KiB
Plaintext

== Why is this an issue?
Calling https://learn.microsoft.com/en-us/dotnet/api/system.object.tostring[ToString()] on an object should always return a `string`. Thus, https://learn.microsoft.com/en-us/dotnet/csharp/programming-guide/classes-and-structs/how-to-override-the-tostring-method[overriding the ToString method] should never return `null`, as it breaks the method's implicit contract, and as a result the consumer's expectations.
[source,csharp,diff-id=1,diff-type=noncompliant]
----
public override string ToString ()
{
if (this.collection.Count == 0)
{
return null; // Noncompliant
}
else
{
// ...
}
}
----
A better alternative is to use the https://learn.microsoft.com/en-us/dotnet/api/system.string.empty[String.Empty] built-in field.
[source,csharp,diff-id=1,diff-type=compliant]
----
public override string ToString ()
{
if (this.collection.Count == 0)
{
return string.Empty;
}
else
{
// ...
}
}
----
include::../resources-dotnet.adoc[]
* https://learn.microsoft.com/en-us/dotnet/csharp/programming-guide/classes-and-structs/how-to-override-the-tostring-method[How to override the ToString method]
include::../rspecator.adoc[]