Iterate(foreach) through member variable in C# in an array [duplicate]

Question

is it possible to access directly the variable i in the foreach header without using temp?

class A
{
    public int i{get; set;}
}
...
A[] many_As=new A[1000]

foreach (var element in many_As)
{
    int temp=element.i;
    ...
}
...

->

foreach (int element in many_As.i)
{
   //doing something with element
   ...
}

godot · Accepted Answer · 2021-02-17 15:08:23Z

2

You can use use System.Linq:

...

using System.Linq;

...


foreach(var element in many_As.Select(x = >x.i)) 
{
    //do something
}

answered Feb 17, 2021 at 15:05

godot

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Comments

Peter Csala · Accepted Answer · 2021-02-17 16:22:59Z

0

Since C# 7 you can do the following:

foreach (var (value, index) in collection.Select((val, idx)=>(val, idx))) {
    Console.WriteLine($"{index + 1}th item is: {value}");
}

Here we are making use of ValueTuple and tuple deconstruction.

answered Feb 17, 2021 at 15:37

Peter Csala

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