Questions tagged [indexer]
367 questions
10
votes
6 answers
C# extend indexer?
Is it possible to use extension methods to extend an indexer? I want to be able to get cell's value from DataGridViewCell of given DataGridViewRow using header text like this:
object o = row["HeaderText"];
I have this code
public static class…
Blablablaster
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10
votes
2 answers
Generic Swap difficulty
I'm coming from C++ where it's easy to do something like this:
template
void Swap(T &a, T &b)
{
T temp = a;
a = b;
b = temp;
}
and then use it to swap values in a container:
std::vector…
mat
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10
votes
2 answers
How to get Index of an Item in ICollection
I have this list of cars
ICollection Cars
and I also have a single car object, which I know is in the ICollection how do I get the index/position of the car in the list? I need to add it to a list of strings
This is what I have so far:
var…
Ayo Adesina
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9
votes
1 answer
Why Blocks are Missing or Skipped on NEAR
I was wondering how come some blocks exist but some don't? It seems like they get skipped and I'm unsure as to why. For example:
87868936 exists and so does 87868938 but 87868938 does not. Thanks!
Benjamin Kurrek
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- 14
9
votes
1 answer
What is the meaning of `public string this[string columnName]` When implementing IDataErrorInfo interface?
What is the meaning of public string this[string columnName] When implementing IDataErrorInfo interface?
public string this[string columnName]
{
get
{
switch (columnName)
{
case…
Saeid
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- 26
9
votes
2 answers
What the difference between array indexer and any other object indexer
Consider following two data types:
class C
{
public int I { get; set; }
}
struct S
{
public int I { get; set; }
}
Let's try to use them inside the list, for example:
var c_list = new List { new C { I = 1 } };
c_list[0].I++;
var s_list…
lorond
- 3,856
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8
votes
4 answers
Magento Catalog URL rewrites stuck on processing
As the title says my Catalog URL rewrites indexer is stuck on processing.
I've tried everything and I just can't find a solution to this. Does anyone know a solid fix for this?
I've tried truncating core_url_rewrite table and deleting the locks but…
sulman
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- 7
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- 62
8
votes
2 answers
C++11 settings in Eclipse Indexer conflict with git
In order to set up C++11 for specific projects, I'm required to add -std=c++11 to the CDT GCC Built-in Compiler Settings under Project -> Properties -> C/C++ General -> Preprocessor Include Paths, Macros etc.
This creates a file called…
Shloim
- 5,281
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- 36
8
votes
3 answers
“Strange” C# property syntax
I just saw this in a c# project:
public char this[int index]
I consider myself new to C#; any one can help what it's meaning?
user522745
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7
votes
4 answers
Create Indexer in VB.NET which can be used from C#
Can I create a class in VB.NET which can be used from C# like that:
myObject.Objects[index].Prop = 1234;
Sure I could create a property which returns an array. But the requirement is that the index is 1-based, not 0-based, so this method has to map…
codymanix
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7
votes
1 answer
Implementing Indexer in F#
I am trying to convert this C# code to F#:
double[,] matrix;
public Matrix(int rows, int cols)
{
this.matrix = new double[rows, cols];
}
public double this[int row, int col]
{
get
{
return…
Beaker
- 2,804
- 5
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7
votes
1 answer
Is there a built-in generic interface with covariant type parameter returned by an indexer?
In this thread
How to get null instead of the KeyNotFoundException accessing Dictionary value by key?
in my own answer I used explicit interface implementation to change the basic dictionary indexer behaviour not to throw KeyNotFoundException if the…
horgh
- 17,918
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7
votes
3 answers
Indexer as part of the interface in C#
In C#, what's the syntax for declaring an indexer as part of an interface? Is it still this[ ]? Something feels odd about using the this keyword in an interface.
Dinah
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7
votes
3 answers
Eclipse 3.7 cannot resolve Types in C++ Editor
I recently changed from Eclipse 3.6 to Eclipse 3.7 , which I am using for C++ development in Ubuntu 11.04 .
With Version 3.6 I had no big troubles, except that I always had some issues with the indexer.
Now with Version 3.7 it begins marking…
Toby
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6
votes
2 answers
XML Comments - How do you reference a dictionary indexer properly?
As the name states, I have no idea how to reference a dictionary indexer. Any help here? :)
FYI, I've tried:
myermian
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