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Questions tagged [object-initializers]

Object initializers let you assign values to any accessible fields or properties of an object at creation time without having to invoke a constructor followed by lines of assignment statements.

An example of object initializers is the Object and Collection Initializers (C# Programming Guide):

Object initializers let you assign values to any accessible fields or properties of an object at creation time without having to invoke a constructor followed by lines of assignment statements. The object initializer syntax enables you to specify arguments for a constructor or omit the arguments (and parentheses syntax).

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What should my Objective-C singleton look like?

My singleton accessor method is usually some variant of: static MyClass *gInstance = NULL; + (MyClass *)instance { @synchronized(self) { if (gInstance == NULL) gInstance = [[self alloc] init]; } …
schwa
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Object initialization syntax

I'm just starting out with F# and I can't find the syntax to do object initialization like in C# 3. I.e. given this: public class Person { public DateTime BirthDate { get; set; } public string Name { get; set; } } how do I write the following…
Mauricio Scheffer
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Best practice to implement a failable initializer in Swift

With the following code I try to define a simple model class and it's failable initializer, which takes a (json-) dictionary as parameter. The initializer should return nil if the user name is not defined in the original json. 1. Why doesn't the…
Kai Huppmann
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Constructor vs Object Initializer Precedence in C#

I've been learning the object initializer in C# recently, but now I'm wondering how it works when it conflicts with the constructor. public class A { public bool foo { get; set; } public A() { foo = true; } public…
bbill
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Initial capacity of collection types, e.g. Dictionary, List

Certain collection types in .Net have an optional "Initial Capacity" constructor parameter. For example: Dictionary something = new Dictionary(20); List anything = new List(50); I can't seem to find…
Neil N
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How to debug object initializer code?

Is there a way to step by step debug the object initializer code in Visual Studio? Example: return new Veranstaltung() { ID = tblVeranstaltung.VeranstaltungsID, Titel = tblVeranstaltung.Titel, …
magnattic
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Nested object initializer syntax

Resharper has just suggested the following refactoring to me: // Constructor initializes InitializedProperty but // the UninitializedSubproperty is uninitialized. var myInstance = new…
Rawling
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Order of operations using Object Initializer Syntax

Does the order in which I set properties using the object initializer syntax get executed in the exact same order? For instance if I do this: var s = new Person { FirstName = "Micah", LastName = "Martin", …
Micah
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Use object initializer - Resharper suggestion

I use ReSharper everyday, and today I asked myself why ReSharper suggests "Use object initializer" when I do this : MyClass myClass = new MyClass(); myClass.MyInt = 0; myClass.MyString = string.Empty; It gets replaced by : MyClass myClass = new…
Wassim AZIRAR
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Initializer syntax

I like the C# 3 initializer syntax and use it a lot, but today while looking in Reflector, the following came up: var binding = new WSHttpBinding { ReaderQuotas = { MaxArrayLength = 100000 }, MaxReceivedMessageSize = 10485760 }; At first I…
leppie
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How to change the formatting of the "Use Object Initializer" refactoring in Resharper?

When I refactor the following line: Employee e = new Employee(); e.First = "Frank"; e.Last = "Rizzo"; using Resharper's "Use Object Initializer", I get the following: Employee e = new Employee { First = "Frank", …
AngryHacker
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Assigning events in object initializer

Why isn't it possible to assign events along with properties in object initializers in C#? It seems to be so natural to do so. var myObject = new MyClass() { Property = value, Event1 = actor, // or Event2 +=…
Max
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c# object initializer complexity. best practice

I was too excited when object initializer appeared in C#. MyClass a = new MyClass(); a.Field1 = Value1; a.Field2 = Value2; can be rewritten shorter: MyClass a = new MyClass { Field1 = Value1, Field2 = Value2 } Object initializer code is more…
Andrew Florko
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Combining List initializer and object initializer

Is is possible to combine a List initializer and object initializer at the same time? Given the following class definition: class MyList : List { public string Text { get; set; } } // we can do this var obj1 = new MyList() { Text="Hello"…
codymanix
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Can properties inside an object initializer reference each other?

Is it somehow possible for properties to reference each other during the creation of a dynamic object an anonymously-typed object (i.e. inside the object initializer)? My simplified example below needs to reuse the Age property without making a…
user3199179
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