From 933f260db2f2a8732e096efc9808977ff90c95d6 Mon Sep 17 00:00:00 2001
From: Michael Krisper <michael.krisper@tugraz.at>
Date: Mon, 6 Jul 2015 15:48:01 +0200
Subject: [PATCH] added slice helper method for strings and modulo for integers
---
VectoCore/Utils/IntExtensionMethods.cs | 14 +++++++++++---
VectoCore/Utils/StringExtensionMethods.cs | 10 ++++++++++
2 files changed, 21 insertions(+), 3 deletions(-)
diff --git a/VectoCore/Utils/IntExtensionMethods.cs b/VectoCore/Utils/IntExtensionMethods.cs
index 2381c3bdd3..265ed5e69e 100644
--- a/VectoCore/Utils/IntExtensionMethods.cs
+++ b/VectoCore/Utils/IntExtensionMethods.cs
@@ -1,6 +1,3 @@
-using System;
-using System.Diagnostics.Contracts;
-
namespace TUGraz.VectoCore.Utils
{
public static class IntExtensionMethods
@@ -34,5 +31,16 @@ namespace TUGraz.VectoCore.Utils
{
return SIBase<T>.Create(d);
}
+
+ /// <summary>
+ /// Modulo functions which also works on negative Numbers (not like the built-in %-operator which just returns the remainder).
+ /// </summary>
+ /// <param name="a"></param>
+ /// <param name="b"></param>
+ /// <returns></returns>
+ public static int Mod(this int a, int b)
+ {
+ return (a %= b) < 0 ? a + b : a;
+ }
}
}
\ No newline at end of file
diff --git a/VectoCore/Utils/StringExtensionMethods.cs b/VectoCore/Utils/StringExtensionMethods.cs
index c72e97e05a..d0eeff2c14 100644
--- a/VectoCore/Utils/StringExtensionMethods.cs
+++ b/VectoCore/Utils/StringExtensionMethods.cs
@@ -1,3 +1,4 @@
+using System;
using System.Globalization;
namespace TUGraz.VectoCore.Utils
@@ -8,5 +9,14 @@ namespace TUGraz.VectoCore.Utils
{
return double.Parse(self, CultureInfo.InvariantCulture);
}
+
+ public static string Slice(this string s, int from = 0, int to = int.MaxValue)
+ {
+ from = Math.Min(Math.Max(from, -s.Length), s.Length);
+ from = from < 0 ? from + s.Length : from;
+ to = Math.Min(Math.Max(to, -s.Length), s.Length);
+ to = to < 0 ? to + s.Length : to;
+ return s.Substring(from, Math.Max(to - from, 0));
+ }
}
}
\ No newline at end of file
--
GitLab