Using an array of named tuples in LINQ
I'm trying to use an array of named tuples in a LINQ (LINQ-to-object) query like this:
(int from, int to) inputRanges = { (1,2), (3,4) };
var result = from range in inputRanges
select Enumerable.Range(range.from, range.to - range.from + 1);
return result.SelectMany(x => x);
However, I receive a compiler error, telling me that range has no member from and it instead expected a comma , instead of .from.
What am I doing wrong? Are named tuples and LINQ-to-objects not combinable?
c# linq tuples
asked Nov 15 '18 at 18:34
D.R.D.R.
9,5321350122
add a comment |
I'm trying to use an array of named tuples in a LINQ (LINQ-to-object) query like this:
(int from, int to) inputRanges = { (1,2), (3,4) };
var result = from range in inputRanges
select Enumerable.Range(range.from, range.to - range.from + 1);
return result.SelectMany(x => x);
However, I receive a compiler error, telling me that range has no member from and it instead expected a comma , instead of .from.
What am I doing wrong? Are named tuples and LINQ-to-objects not combinable?
c# linq tuples
asked Nov 15 '18 at 18:34
D.R.D.R.
9,5321350122
If I use.Item1and.Item2instead it works - are named tuples a problem for LINQ? Why?
– D.R.
Nov 15 '18 at 18:35
add a comment |
I'm trying to use an array of named tuples in a LINQ (LINQ-to-object) query like this:
(int from, int to) inputRanges = { (1,2), (3,4) };
var result = from range in inputRanges
select Enumerable.Range(range.from, range.to - range.from + 1);
return result.SelectMany(x => x);
However, I receive a compiler error, telling me that range has no member from and it instead expected a comma , instead of .from.
What am I doing wrong? Are named tuples and LINQ-to-objects not combinable?
c# linq tuples
asked Nov 15 '18 at 18:34
D.R.D.R.
9,5321350122
I'm trying to use an array of named tuples in a LINQ (LINQ-to-object) query like this:
(int from, int to) inputRanges = { (1,2), (3,4) };
var result = from range in inputRanges
select Enumerable.Range(range.from, range.to - range.from + 1);
return result.SelectMany(x => x);
However, I receive a compiler error, telling me that range has no member from and it instead expected a comma , instead of .from.
What am I doing wrong? Are named tuples and LINQ-to-objects not combinable?
c# linq tuples
c# linq tuples
asked Nov 15 '18 at 18:34
D.R.D.R.
9,5321350122
asked Nov 15 '18 at 18:34
D.R.D.R.
9,5321350122
asked Nov 15 '18 at 18:34
D.R.D.R.
9,5321350122
asked Nov 15 '18 at 18:34
D.R.D.R.
9,5321350122
asked Nov 15 '18 at 18:34
D.R.D.R.
9,5321350122
9,5321350122
If I use.Item1and.Item2instead it works - are named tuples a problem for LINQ? Why?
– D.R.
Nov 15 '18 at 18:35
add a comment |
If I use.Item1and.Item2instead it works - are named tuples a problem for LINQ? Why?
– D.R.
Nov 15 '18 at 18:35
If I use
.Item1 and .Item2 instead it works - are named tuples a problem for LINQ? Why?– D.R.
Nov 15 '18 at 18:35
If I use
.Item1 and .Item2 instead it works - are named tuples a problem for LINQ? Why?– D.R.
Nov 15 '18 at 18:35
add a comment |
1 Answer
1
active
oldest
votes
The problem is that from is a keyword used by linq for iterating the items of the collection (from item in collection ...).
To solve it use @from in the linq:
var result = from range in inputRanges
select Enumerable.Range(range.@from, range.to - range.@from + 1);
For more about the @ see: C# prefixing parameter names with @ . IMO the use of the property name from in this case is ok, but I do think in general this would be a bad practice.
answered Nov 15 '18 at 18:51
Gilad GreenGilad Green
30.3k53259
1
Oh boy...hahaha, thanks. I would have looked for another year without realizing it :D
– D.R.
Nov 15 '18 at 19:38
1
@D.R. - :) glad it helped you
– Gilad Green
Nov 15 '18 at 20:11
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
The problem is that from is a keyword used by linq for iterating the items of the collection (from item in collection ...).
To solve it use @from in the linq:
var result = from range in inputRanges
select Enumerable.Range(range.@from, range.to - range.@from + 1);
For more about the @ see: C# prefixing parameter names with @ . IMO the use of the property name from in this case is ok, but I do think in general this would be a bad practice.
answered Nov 15 '18 at 18:51
Gilad GreenGilad Green
30.3k53259
1
Oh boy...hahaha, thanks. I would have looked for another year without realizing it :D
– D.R.
Nov 15 '18 at 19:38
1
@D.R. - :) glad it helped you
– Gilad Green
Nov 15 '18 at 20:11
add a comment |
The problem is that from is a keyword used by linq for iterating the items of the collection (from item in collection ...).
To solve it use @from in the linq:
var result = from range in inputRanges
select Enumerable.Range(range.@from, range.to - range.@from + 1);
For more about the @ see: C# prefixing parameter names with @ . IMO the use of the property name from in this case is ok, but I do think in general this would be a bad practice.
answered Nov 15 '18 at 18:51
Gilad GreenGilad Green
30.3k53259
1
Oh boy...hahaha, thanks. I would have looked for another year without realizing it :D
– D.R.
Nov 15 '18 at 19:38
1
@D.R. - :) glad it helped you
– Gilad Green
Nov 15 '18 at 20:11
add a comment |
The problem is that from is a keyword used by linq for iterating the items of the collection (from item in collection ...).
To solve it use @from in the linq:
var result = from range in inputRanges
select Enumerable.Range(range.@from, range.to - range.@from + 1);
For more about the @ see: C# prefixing parameter names with @ . IMO the use of the property name from in this case is ok, but I do think in general this would be a bad practice.
answered Nov 15 '18 at 18:51
Gilad GreenGilad Green
30.3k53259
The problem is that from is a keyword used by linq for iterating the items of the collection (from item in collection ...).
To solve it use @from in the linq:
var result = from range in inputRanges
select Enumerable.Range(range.@from, range.to - range.@from + 1);
For more about the @ see: C# prefixing parameter names with @ . IMO the use of the property name from in this case is ok, but I do think in general this would be a bad practice.
answered Nov 15 '18 at 18:51
Gilad GreenGilad Green
30.3k53259
answered Nov 15 '18 at 18:51
Gilad GreenGilad Green
30.3k53259
answered Nov 15 '18 at 18:51
Gilad GreenGilad Green
30.3k53259
answered Nov 15 '18 at 18:51
Gilad GreenGilad Green
30.3k53259
30.3k53259
1
Oh boy...hahaha, thanks. I would have looked for another year without realizing it :D
– D.R.
Nov 15 '18 at 19:38
1
@D.R. - :) glad it helped you
– Gilad Green
Nov 15 '18 at 20:11
add a comment |
1
Oh boy...hahaha, thanks. I would have looked for another year without realizing it :D
– D.R.
Nov 15 '18 at 19:38
1
@D.R. - :) glad it helped you
– Gilad Green
Nov 15 '18 at 20:11
1
1
Oh boy...hahaha, thanks. I would have looked for another year without realizing it :D
– D.R.
Nov 15 '18 at 19:38
Oh boy...hahaha, thanks. I would have looked for another year without realizing it :D
– D.R.
Nov 15 '18 at 19:38
1
1
@D.R. - :) glad it helped you
– Gilad Green
Nov 15 '18 at 20:11
@D.R. - :) glad it helped you
– Gilad Green
Nov 15 '18 at 20:11
add a comment |
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If I use
.Item1and.Item2instead it works - are named tuples a problem for LINQ? Why?– D.R.
Nov 15 '18 at 18:35