Initializing an Array of Structs in C

Question

How can I initialize a const   static array of structs as clearly as possible   class SomeClass        struct MyStruct               public string label          public int id              const MyStruct   MyArray                 a   1              b   5              q   29

User · Answer

I d use a static constructor on the class that sets the value of a static readonly array   public class SomeClass      public readonly MyStruct   myArray      public static SomeClass              myArray       foo    bar                        boo    far

User · Answer

I d use a static constructor on the class that sets the value of a static readonly array   public class SomeClass      public readonly MyStruct   myArray      public static SomeClass              myArray       foo    bar                        boo    far

User · Answer

Are you using C  3 0  You can use object initializers like so   static MyStruct   myArray                new MyStruct                    new MyStruct     id   1  label    1                     new MyStruct     id   2  label    2                     new MyStruct     id   3  label    3

User · Answer

Are you using C  3 0  You can use object initializers like so   static MyStruct   myArray                new MyStruct                    new MyStruct     id   1  label    1                     new MyStruct     id   2  label    2                     new MyStruct     id   3  label    3

User · Answer

Change const to static readonly and initialise it like this  static readonly MyStruct   MyArray   new         new MyStruct   label    a   id   1        new MyStruct   label    b   id   5        new MyStruct   label    q   id   29

User · Answer

You cannot initialize reference types by default other than null  You have to make them readonly  So this could work       readonly MyStruct   MyArray   new MyStruct          new MyStruct  label    a   id   1         new MyStruct  label    b   id   5         new MyStruct  label    c   id   1

User · Answer

I d use a static constructor on the class that sets the value of a static readonly array   public class SomeClass      public readonly MyStruct   myArray      public static SomeClass              myArray       foo    bar                        boo    far

User · Answer

You cannot initialize reference types by default other than null  You have to make them readonly  So this could work       readonly MyStruct   MyArray   new MyStruct          new MyStruct  label    a   id   1         new MyStruct  label    b   id   5         new MyStruct  label    c   id   1

User · Answer

You cannot initialize reference types by default other than null  You have to make them readonly  So this could work       readonly MyStruct   MyArray   new MyStruct          new MyStruct  label    a   id   1         new MyStruct  label    b   id   5         new MyStruct  label    c   id   1

User · Answer

Change const to static readonly and initialise it like this  static readonly MyStruct   MyArray   new         new MyStruct   label    a   id   1        new MyStruct   label    b   id   5        new MyStruct   label    q   id   29

User · Answer

Firstly  do you really have to have a mutable struct  They re almost always a bad idea  Likewise public fields  There are some very occasional contexts in which they re reasonable  usually both parts together  as with ValueTuple  but they re pretty rare in my experience   Other than that  I d just create a constructor taking the two bits of data   class SomeClass        struct MyStruct               private readonly string label          private readonly int id           public MyStruct  string label  int id                        this label   label              this id   id                     public string Label   get   return label              public string Id   get   return id                  static readonly IList lt MyStruct gt  MyArray   new ReadOnlyCollection lt MyStruct gt           new                  new MyStruct   a   1                new MyStruct   b   5                new MyStruct   q   29                  Note the use of ReadOnlyCollection instead of exposing the array itself - this will make it immutable  avoiding the problem exposing arrays directly   The code show does initialize an array of structs - it then just passes the reference to the constructor of ReadOnlyCollection lt  gt

User · Answer

Are you using C  3 0  You can use object initializers like so   static MyStruct   myArray                new MyStruct                    new MyStruct     id   1  label    1                     new MyStruct     id   2  label    2                     new MyStruct     id   3  label    3

User · Answer

Firstly  do you really have to have a mutable struct  They re almost always a bad idea  Likewise public fields  There are some very occasional contexts in which they re reasonable  usually both parts together  as with ValueTuple  but they re pretty rare in my experience   Other than that  I d just create a constructor taking the two bits of data   class SomeClass        struct MyStruct               private readonly string label          private readonly int id           public MyStruct  string label  int id                        this label   label              this id   id                     public string Label   get   return label              public string Id   get   return id                  static readonly IList lt MyStruct gt  MyArray   new ReadOnlyCollection lt MyStruct gt           new                  new MyStruct   a   1                new MyStruct   b   5                new MyStruct   q   29                  Note the use of ReadOnlyCollection instead of exposing the array itself - this will make it immutable  avoiding the problem exposing arrays directly   The code show does initialize an array of structs - it then just passes the reference to the constructor of ReadOnlyCollection lt  gt

User · Answer

Firstly  do you really have to have a mutable struct  They re almost always a bad idea  Likewise public fields  There are some very occasional contexts in which they re reasonable  usually both parts together  as with ValueTuple  but they re pretty rare in my experience   Other than that  I d just create a constructor taking the two bits of data   class SomeClass        struct MyStruct               private readonly string label          private readonly int id           public MyStruct  string label  int id                        this label   label              this id   id                     public string Label   get   return label              public string Id   get   return id                  static readonly IList lt MyStruct gt  MyArray   new ReadOnlyCollection lt MyStruct gt           new                  new MyStruct   a   1                new MyStruct   b   5                new MyStruct   q   29                  Note the use of ReadOnlyCollection instead of exposing the array itself - this will make it immutable  avoiding the problem exposing arrays directly   The code show does initialize an array of structs - it then just passes the reference to the constructor of ReadOnlyCollection lt  gt

User · Answer

I d use a static constructor on the class that sets the value of a static readonly array   public class SomeClass      public readonly MyStruct   myArray      public static SomeClass              myArray       foo    bar                        boo    far

User · Answer

Are you using C  3 0  You can use object initializers like so   static MyStruct   myArray                new MyStruct                    new MyStruct     id   1  label    1                     new MyStruct     id   2  label    2                     new MyStruct     id   3  label    3

User · Answer

You cannot initialize reference types by default other than null  You have to make them readonly  So this could work       readonly MyStruct   MyArray   new MyStruct          new MyStruct  label    a   id   1         new MyStruct  label    b   id   5         new MyStruct  label    c   id   1

User · Answer

Firstly  do you really have to have a mutable struct  They re almost always a bad idea  Likewise public fields  There are some very occasional contexts in which they re reasonable  usually both parts together  as with ValueTuple  but they re pretty rare in my experience   Other than that  I d just create a constructor taking the two bits of data   class SomeClass        struct MyStruct               private readonly string label          private readonly int id           public MyStruct  string label  int id                        this label   label              this id   id                     public string Label   get   return label              public string Id   get   return id                  static readonly IList lt MyStruct gt  MyArray   new ReadOnlyCollection lt MyStruct gt           new                  new MyStruct   a   1                new MyStruct   b   5                new MyStruct   q   29                  Note the use of ReadOnlyCollection instead of exposing the array itself - this will make it immutable  avoiding the problem exposing arrays directly   The code show does initialize an array of structs - it then just passes the reference to the constructor of ReadOnlyCollection lt  gt

[c#] Initializing an Array of Structs in C#

Examples related to c#

Examples related to arrays

Examples related to struct