What is the meaning of new { } (without [])?
I'm doing a kinda-like research project on NUnit for class, and our teacher wrote this test:
[Test]
public void ObjectLiteralIsAnObject ()
{
Assert.AreEqual (true, new { } is Object);
}
I know the meaning of new{}, it creates an array of the best assignable type given the values you insert between {}. But what does new { } do? Is it just the same, or is there a small difference?
Thank you so much in advance, and sorry if it's a silly question!
c# testing nunit
asked Nov 22 at 18:04
Biel Serrano
32
add a comment |
I'm doing a kinda-like research project on NUnit for class, and our teacher wrote this test:
[Test]
public void ObjectLiteralIsAnObject ()
{
Assert.AreEqual (true, new { } is Object);
}
I know the meaning of new{}, it creates an array of the best assignable type given the values you insert between {}. But what does new { } do? Is it just the same, or is there a small difference?
Thank you so much in advance, and sorry if it's a silly question!
c# testing nunit
asked Nov 22 at 18:04
Biel Serrano
32
1
This creates a new anonymous type
– Panagiotis Kanavos
Nov 22 at 18:07
2
The best way to answer these kinds of questions is to runvar x = new { };in the debugger and look at whatxcontains.
– Dour High Arch
Nov 22 at 18:10
add a comment |
I'm doing a kinda-like research project on NUnit for class, and our teacher wrote this test:
[Test]
public void ObjectLiteralIsAnObject ()
{
Assert.AreEqual (true, new { } is Object);
}
I know the meaning of new{}, it creates an array of the best assignable type given the values you insert between {}. But what does new { } do? Is it just the same, or is there a small difference?
Thank you so much in advance, and sorry if it's a silly question!
c# testing nunit
asked Nov 22 at 18:04
Biel Serrano
32
I'm doing a kinda-like research project on NUnit for class, and our teacher wrote this test:
[Test]
public void ObjectLiteralIsAnObject ()
{
Assert.AreEqual (true, new { } is Object);
}
I know the meaning of new{}, it creates an array of the best assignable type given the values you insert between {}. But what does new { } do? Is it just the same, or is there a small difference?
Thank you so much in advance, and sorry if it's a silly question!
c# testing nunit
c# testing nunit
asked Nov 22 at 18:04
Biel Serrano
32
asked Nov 22 at 18:04
Biel Serrano
32
asked Nov 22 at 18:04
Biel Serrano
32
asked Nov 22 at 18:04
Biel Serrano
32
asked Nov 22 at 18:04
Biel Serrano
32
32
1
This creates a new anonymous type
– Panagiotis Kanavos
Nov 22 at 18:07
2
The best way to answer these kinds of questions is to runvar x = new { };in the debugger and look at whatxcontains.
– Dour High Arch
Nov 22 at 18:10
add a comment |
1
This creates a new anonymous type
– Panagiotis Kanavos
Nov 22 at 18:07
2
The best way to answer these kinds of questions is to runvar x = new { };in the debugger and look at whatxcontains.
– Dour High Arch
Nov 22 at 18:10
1
1
This creates a new anonymous type
– Panagiotis Kanavos
Nov 22 at 18:07
This creates a new anonymous type
– Panagiotis Kanavos
Nov 22 at 18:07
2
2
The best way to answer these kinds of questions is to run
var x = new { }; in the debugger and look at what x contains.– Dour High Arch
Nov 22 at 18:10
The best way to answer these kinds of questions is to run
var x = new { }; in the debugger and look at what x contains.– Dour High Arch
Nov 22 at 18:10
add a comment |
1 Answer
1
active
oldest
votes
new { }
is used to create anonymous object, in another words an unnamed object.
It is often used in LINQ queries, for example:
var query =
from c in db.Customers
select new
{
c.CustomerId,
c.CustomerName
};
This creates IQueryable of anonymous type with two properties: CustomerId and CustomerName
answered Nov 22 at 18:09
Dmitry S
836617
2
It does very much have a 'concrete' type. Just not a named one.
– Henk Holterman
Nov 22 at 18:27
add a comment |
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1 Answer
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active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
new { }
is used to create anonymous object, in another words an unnamed object.
It is often used in LINQ queries, for example:
var query =
from c in db.Customers
select new
{
c.CustomerId,
c.CustomerName
};
This creates IQueryable of anonymous type with two properties: CustomerId and CustomerName
answered Nov 22 at 18:09
Dmitry S
836617
2
It does very much have a 'concrete' type. Just not a named one.
– Henk Holterman
Nov 22 at 18:27
add a comment |
new { }
is used to create anonymous object, in another words an unnamed object.
It is often used in LINQ queries, for example:
var query =
from c in db.Customers
select new
{
c.CustomerId,
c.CustomerName
};
This creates IQueryable of anonymous type with two properties: CustomerId and CustomerName
answered Nov 22 at 18:09
Dmitry S
836617
2
It does very much have a 'concrete' type. Just not a named one.
– Henk Holterman
Nov 22 at 18:27
add a comment |
new { }
is used to create anonymous object, in another words an unnamed object.
It is often used in LINQ queries, for example:
var query =
from c in db.Customers
select new
{
c.CustomerId,
c.CustomerName
};
This creates IQueryable of anonymous type with two properties: CustomerId and CustomerName
answered Nov 22 at 18:09
Dmitry S
836617
new { }
is used to create anonymous object, in another words an unnamed object.
It is often used in LINQ queries, for example:
var query =
from c in db.Customers
select new
{
c.CustomerId,
c.CustomerName
};
This creates IQueryable of anonymous type with two properties: CustomerId and CustomerName
answered Nov 22 at 18:09
Dmitry S
836617
edited Nov 22 at 18:34
answered Nov 22 at 18:09
Dmitry S
836617
answered Nov 22 at 18:09
Dmitry S
836617
answered Nov 22 at 18:09
Dmitry S
836617
836617
2
It does very much have a 'concrete' type. Just not a named one.
– Henk Holterman
Nov 22 at 18:27
add a comment |
2
It does very much have a 'concrete' type. Just not a named one.
– Henk Holterman
Nov 22 at 18:27
2
2
It does very much have a 'concrete' type. Just not a named one.
– Henk Holterman
Nov 22 at 18:27
It does very much have a 'concrete' type. Just not a named one.
– Henk Holterman
Nov 22 at 18:27
add a comment |
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1
This creates a new anonymous type
– Panagiotis Kanavos
Nov 22 at 18:07
2
The best way to answer these kinds of questions is to run
var x = new { };in the debugger and look at whatxcontains.– Dour High Arch
Nov 22 at 18:10