My code:
var Result = from TempRow in ArrAbsDiff
where TempRow.Strike == StrikeOfMinAbsDiff
select TempRow.PutMidPrice;
I know that the above code return just one value of type decimal (maybe double). However, Result is of type Enumerable
and I could not easily write Result + 2
. I need to convert it property. I can do it through the following code:
var Result = (from TempRow in ArrAbsDiff
where TempRow.Strike == StrikeOfMinAbsDiff
select TempRow.PutMidPrice).Min();
Is there more efficient way to accomplish it?
Regards,
I know that the above code return just one value of type decimal
Then use First
method instaed of Min
.
At compile time, it's unknown whether the query you have returns 1 record or more than 1 record. So, it assumes a list of them.
I don't know if there is a performance difference between them, I typically use .Single() to get the single record. It's more clear that I want a single record and not, for example, the minimum one.
Try using FirstOrDefault()" this selects the first result returned (as you know only one value will be returned). if a value is not returned the Result will be null, catch this in an if statement like below:
var Result = (from TempRow in ArrAbsDiff
where TempRow.Strike == StrikeOfMinAbsDiff
select TempRow.PutMidPrice).FirstOrDefault();
if (Result == null)
return; // or error message
this will also keep the type of value returned (typed this of the top of my head, may need slight changes!)
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