From 8c4426abc18cb2cdf84ee57988866ddc4b91c2de Mon Sep 17 00:00:00 2001
From: Timerix22 <timerix11@gmail.com>
Date: Sun, 12 Feb 2023 01:04:31 +0600
Subject: [PATCH] StringBuilderExtensions

---
 DTLib/Extensions/StrugBuilderExtensions.cs | 52 ++++++++++++++++++++++
 1 file changed, 52 insertions(+)
 create mode 100644 DTLib/Extensions/StrugBuilderExtensions.cs

diff --git a/DTLib/Extensions/StrugBuilderExtensions.cs b/DTLib/Extensions/StrugBuilderExtensions.cs
new file mode 100644
index 0000000..a8ea145
--- /dev/null
+++ b/DTLib/Extensions/StrugBuilderExtensions.cs
@@ -0,0 +1,52 @@
+namespace DTLib.Extensions;
+
+public static class StrugBuilderExtensions
+{
+    public static StringBuilder AppendArray<TVal>(this StringBuilder b, TVal[] array)
+    {
+        for (int i = 0; i < array.Length; i++)
+            b.Append(array[i]);
+        return b;
+    }
+    public static StringBuilder AppendArray<TVal,TSep>(this StringBuilder b, TVal[] array, char separator)
+    {
+        if (array.Length == 0) return b;
+        b.Append(array[0]);
+        for (int i = 1; i < array.Length; i++)
+            b.Append(separator).Append(array[i]);
+        return b;
+    }
+    public static StringBuilder AppendArray<TVal,TSep>(this StringBuilder b, TVal[] array, string separator)
+    {
+        if (array.Length == 0) return b;
+        b.Append(array[0]);
+        for (int i = 1; i < array.Length; i++)
+            b.Append(separator).Append(array[i]);
+        return b;
+    }
+
+    public static StringBuilder AppendColletion<TVal>(this StringBuilder b, IEnumerable<TVal> enumerable)
+    {
+        foreach (var el in enumerable)
+            b.Append(el);
+        return b;
+    }
+    public static StringBuilder AppendColletion<TVal, TSep>(this StringBuilder b, IEnumerable<TVal> enumerable, char separator)
+    {
+        using IEnumerator<TVal> enumerator = enumerable.GetEnumerator();
+        if (!enumerator.MoveNext()) return b;
+        b.Append(enumerator.Current);
+        while (enumerator.MoveNext())
+            b.Append(separator).Append(enumerator.Current);
+        return b;
+    }
+    public static StringBuilder AppendColletion<TVal, TSep>(this StringBuilder b, IEnumerable<TVal> enumerable, string separator)
+    {
+        using IEnumerator<TVal> enumerator = enumerable.GetEnumerator();
+        if (!enumerator.MoveNext()) return b;
+        b.Append(enumerator.Current);
+        while (enumerator.MoveNext())
+            b.Append(separator).Append(enumerator.Current);
+        return b;
+    }
+}
\ No newline at end of file