S>        public static GetDataString(categoryId : string) : string
S>        {   
S>            if (categoryId!="")
S>            { def res = linq<#from i in _CfgIzmeritel 
S>                    from c in _CfgTypeIzmer
S>                    where i.ID_Izmerit==int.Parse(categoryId)
S>                    where c.ID_TypeIzmerit == i.ID_TypeIzmerit
S>                    select (c.CaptionForTables)#> ; res.ToArray()[0]
S>            } else ""
S>        }
S>

S>очень хочется, что бы этой ошибки не было ...

using Nemerle.Collections;
using Nemerle.Text;
using Nemerle.Utility;
using Nemerle.Data.Linq;

using System;
using System.Collections.Generic;
using System.Console;
using System.Linq;

[Record]
class CfgIzmeritel
{
  [Accessor]
  _ID_Izmerit : int;
  
  [Accessor]
  _ID_TypeIzmerit : int;
}

[Record]
class CfgTypeIzmer
{
  [Accessor]
  _ID_TypeIzmerit: int;
  
  [Accessor]
  _CaptionForTables : string;
}

module Program
{
  public static GetDataString(categoryId : string) : string
  {
    def _CfgIzmeritel = array[CfgIzmeritel(1, 2), CfgIzmeritel(1, 2)];
    def _CfgTypeIzmer = array[CfgTypeIzmer(2, "a"), CfgTypeIzmer(2, "a")];
  
    if (categoryId!="")
    { 
      def res = 
        linq<#
        from i in _CfgIzmeritel 
        from c in _CfgTypeIzmer
        where i.ID_Izmerit == int.Parse(categoryId)
        where c.ID_TypeIzmerit == i.ID_TypeIzmerit
        select (c.CaptionForTables)#> ;
        
        res.ToArray()[0]
    }
    else 
      ""
  }
        
  public Main() : void
  {
    
  }
}

Error: each overload has an error during call:
Error: overload #1, "method System.Linq.Enumerable.Where(source : System.Collections.Generic.IEnumerable[TSource], predicate : System.Func[TSource, int, bool]) : System.Collections.Generic.IEnumerable[TSource]" fail because:
Error: in argument #2 (predicate), needed a System.Func[(CfgIzmeritel- * CfgTypeIzmer-)-, int, bool], got (? * ?) -> bool-: ((CfgIzmeritel- * CfgTypeIzmer-)- * int) -> bool is not a subtype of System.Func[(CfgIzmeritel- * CfgTypeIzmer-)-, int, bool] [simple require]
Error: overload #2, "method System.Linq.Enumerable.Where(source : System.Collections.Generic.IEnumerable[TSource], predicate : System.Func[TSource, bool]) : System.Collections.Generic.IEnumerable[TSource]" fail because:
Error: in argument #2 (predicate), needed a System.Func[(CfgIzmeritel- * CfgTypeIzmer-)-, bool], got (? * ?) -> bool-: (CfgIzmeritel- * CfgTypeIzmer-) -> bool is not a subtype of System.Func[(CfgIzmeritel- * CfgTypeIzmer-), bool] [simple require]