Iterates over each item in the collection and applies the specified action to it. - CSharp System.Collections.Generic

CSharp examples for System.Collections.Generic:ICollection

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Description

Iterates over each item in the collection and applies the specified action to it.

Demo Code

// BDHero is free software: you can redistribute it and/or modify
using System.Linq;
using System.Collections.Generic;
using System;//from  w  ww .j a v  a 2 s  .  c o  m

public class Main{
        /// <summary>
        /// Iterates over each item in the collection and applies the specified action to it.
        /// </summary>
        /// <param name="collection"></param>
        /// <param name="action">Operation to invoke on each item in the collection</param>
        /// <typeparam name="T"></typeparam>
        public static void ForEach<T>(this IEnumerable<T> collection, Action<T, int, int> action)
        {
            var items = collection as T[] ?? collection.ToArray();
            var i = 0;
            var len = items.Count();
            foreach (T item in items)
            {
                action(item, i++, len);
            }
        }
        /// <summary>
        /// Iterates over each item in the collection and applies the specified action to it.
        /// </summary>
        /// <param name="collection"></param>
        /// <param name="action">Operation to invoke on each item in the collection</param>
        /// <typeparam name="T"></typeparam>
        public static void ForEach<T>(this IEnumerable<T> collection, Action<T, int> action)
        {
            var i = 0;
            foreach (T item in collection)
            {
                action(item, i++);
            }
        }
        /// <summary>
        /// Iterates over each item in the collection and applies the specified action to it.
        /// </summary>
        /// <param name="collection"></param>
        /// <param name="action">Operation to invoke on each item in the collection</param>
        /// <typeparam name="T"></typeparam>
        public static void ForEach<T>(this IEnumerable<T> collection, Action<T, bool> action)
        {
            var items = collection as T[] ?? collection.ToArray();
            var i = 0;
            var len = items.Count();
            foreach (T item in items)
            {
                var isLast = ++i == len;
                action(item, isLast);
            }
        }
        /// <summary>
        /// Iterates over each item in the collection and applies the specified action to it.
        /// </summary>
        /// <param name="collection"></param>
        /// <param name="action">Operation to invoke on each item in the collection</param>
        /// <typeparam name="T"></typeparam>
        public static void ForEach<T>(this IEnumerable<T> collection, Action<T> action)
        {
            foreach (T item in collection)
            {
                action(item);
            }
        }
}

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