I want to use https://github.com/linq2db/linq2db in ironpython
I wrote extension in c#
public static class BillingDBHelper
{
public static IQueryable<T> Filter<T>(this IQueryable<T> table,
Expression<Func<T, bool>> predicate)
{
if (predicate == null)
return table;
return table.Where(predicate);
}
}
and call it in py
with get_db() as db:
cycle = db.t_ws_billing_cycle.Filter(lambda x: x.policy_no == pn)
and get TypeError: The type arguments for method 'Filter' cannot be inferred
from the usage. Try specifying the type arguments explicitly.
How to fix?
Or how i build c# expression lambda in ironpython?
Thanks
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