public static int Count <T>(this System.Collections.Generic.IEnumerable <T> e, System.Predicate <T> m = null)
{
if (e.IsNull())
{
throw new System.NullReferenceException();
}
var result = 0;
var list = new System.Collections.Generic.List <T>(e);
if (m.IsNull())
{
result = list.Count;
}
else
{
for (var i = 0; i < list.Count; i++)
{
if (m.Invoke(list[i]))
{
result++;
}
}
}
list.Clear();
return(result);
}
public static System.Collections.Generic.IList <T> ToList <T>(this System.Collections.Generic.IEnumerable <T> e)
{
if (e.IsNull())
{
throw new System.NullReferenceException();
}
return(new System.Collections.Generic.List <T>(e));
}
public static T Find <T>(this System.Collections.Generic.IEnumerable <T> e, System.Predicate <T> m = null)
{
if (e.IsNull())
{
throw new System.NullReferenceException();
}
var list = new System.Collections.Generic.List <T>(e);
var result = list.Find(m);
list.Clear();
return(result);
}
public static T[] ToArray <T>(this System.Collections.Generic.IEnumerable <T> e)
{
if (e.IsNull())
{
throw new System.NullReferenceException();
}
var list = new System.Collections.Generic.List <T>(e);
var result = list.ToArray();
list.Clear();
return(result);
}
public static TOutput[] Convert <TInput, TOutput>(this System.Collections.Generic.IEnumerable <TInput> e, System.Converter <TInput, TOutput> c)
{
if (e.IsNull())
{
throw new System.NullReferenceException();
}
var list = new System.Collections.Generic.List <TInput>(e);
var converted = list.ConvertAll(c);
var result = converted.ToArray();
list.Clear();
converted.Clear();
return(result);
}
public static bool Contains <T>(this System.Collections.Generic.IEnumerable <T> e, System.Predicate <T> m = null)
{
if (e.IsNull())
{
throw new System.NullReferenceException();
}
var list = new System.Collections.Generic.List <T>(e);
var result = false;
for (var i = 0; (i < list.Count) && !result; i++)
{
result = m.Invoke(list[i]);
}
list.Clear();
return(result);
}