/// <summary>
/// Performs deletion of specified slice.
/// </summary>
/// <param name="source">Source string.</param>
/// <param name="from">First character index to delete.</param>
/// <param name="to">Exclusive boundary.</param>
/// <param name="step">Increment index by.</param>
/// <exception cref="ArgumentNullException">source is null.</exception>
/// <exception cref="ArgumentException">step is equal to 0.</exception>
/// <returns>Result of slice deletion.</returns>
public static string SliceDelete(
this string source,
int?from = null,
int?to = null,
int step = 1)
{
if (source == null)
{
throw new ArgumentNullException("source");
}
var indexer = new SliceDeleteItemIndexer <int>(new ProxiedReadOnlyList <int>(new RangeIndexer(0, source.Length)), from, to, step);
return(Enumerable.Range(0, indexer.Count)
.Aggregate(new StringBuilder(), (builder, i) => builder.Append(source[indexer.GetItemAt(i)]))
.ToString());
}
internal static IList <T> GetSliceDelete <T>(IList <T> source, int?from, int?to, int step)
{
var indexer = new SliceDeleteItemIndexer <T>(source, from, to, step);
return(new ProxiedReadOnlyList <T>(indexer));
}
/// <summary>
/// Performs deletion of specified slice.
/// </summary>
/// <param name="source">Source string.</param>
/// <param name="from">First character index to delete.</param>
/// <param name="to">Exclusive boundary.</param>
/// <param name="step">Increment index by.</param>
/// <exception cref="ArgumentNullException">source is null.</exception>
/// <exception cref="ArgumentException">step is equal to 0.</exception>
/// <returns>Result of slice deletion.</returns>
public static string SliceDelete(
this string source,
int? from = null,
int? to = null,
int step = 1)
{
if (source == null) throw new ArgumentNullException("source");
var indexer = new SliceDeleteItemIndexer<int>(new ProxiedReadOnlyList<int>(new RangeIndexer(0, source.Length)), from, to, step);
return Enumerable.Range(0, indexer.Count)
.Aggregate(new StringBuilder(), (builder, i) => builder.Append(source[indexer.GetItemAt(i)]))
.ToString();
}
