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using System;
using System.Collections.Generic;
using System.Linq;
namespace jive
{
static public class EnumerableExtensions
{
static public IEnumerable<T> where<T>(this IEnumerable<T> items, Func<T, bool> condition_is_met)
{
return null == items ? Enumerable.Empty<T>() : items.Where(condition_is_met);
}
static public IList<T> databind<T>(this IEnumerable<T> items_to_bind_to)
{
return null == items_to_bind_to ? new List<T>() : items_to_bind_to.ToList();
}
static public IEnumerable<T> sorted_using<T>(this IEnumerable<T> items_to_sort, IComparer<T> sorting_algorithm)
{
var sorted_items = new List<T>(items_to_sort);
sorted_items.Sort(sorting_algorithm);
return sorted_items;
}
static public IEnumerable<T> all<T>(this IEnumerable<T> items)
{
foreach (var item in items ?? Enumerable.Empty<T>()) yield return item;
}
static public void each<T>(this IEnumerable<T> items, Action<T> action)
{
foreach (var item in items ?? Enumerable.Empty<T>()) action(item);
}
static public IEnumerable<T> join_with<T>(this IEnumerable<T> left, IEnumerable<T> right)
{
if (null == right) return left;
var list = new List<T>();
list.AddRange(left);
list.AddRange(right);
return list;
}
}
}
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