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Experimenting with grammar for arrays of NRTs #1335

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Experimenting with grammar for arrays of NRTs #1335

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9 changes: 3 additions & 6 deletions standard/types.md
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Original file line number Diff line number Diff line change
Expand Up @@ -54,16 +54,13 @@
;

array_type
: non_array_type rank_specifier+
: array_type nullable_type_annotation rank_specifier+
| non_array_type rank_specifier+
;

non_array_type
: value_type

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standard/types.md#L62 

MDC032::Line length 106 > maximum 81
| class_type
| interface_type
| delegate_type
| 'dynamic'
| type_parameter
| (class_type | interface_type | delegate_type | 'dynamic' | type_parameter) nullable_type_annotation?
| pointer_type // unsafe code support
;

Expand Down Expand Up @@ -946,13 +943,13 @@
> public void M(string s)
> {
> int length = s.Length; // No warning. s is not null
>

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standard/types.md#L946 

MDC032::Line length 87 > maximum 81
> _ = s == null; // Null check by testing equality. The null state of s is maybe null
> length = s.Length; // Warning, and changes the null state of s to not null
>

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standard/types.md#L949 

MDC032::Line length 90 > maximum 81
> _ = s?.Length; // The ?. is a null check and changes the null state of s to maybe null
> if (s.Length > 4) // Warning. Changes null state of s to not null
> {

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standard/types.md#L952 

MDC032::Line length 87 > maximum 81
> _ = s?[4]; // ?[] is a null check and changes the null state of s to maybe null
> _ = s.Length; // Warning. s is maybe null
> }
Expand Down Expand Up @@ -1012,7 +1009,7 @@
> {
> var t = new Test();
> if (t.DisappearingProperty != null)
> {

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standard/types.md#L1012 

MDC032::Line length 110 > maximum 81
> int len = t.DisappearingProperty.Length; // No warning. A compiler can assume property is stateful
> }
> }
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