获取拼音首字母时，也要支持“重庆”

Author: nnhy

NewLife.Core/Common/PinYin.cs

@@ -539,16 +539,8 @@ public static String GetFirst(String str)
     {
         if (str.IsNullOrEmpty()) return String.Empty;
 
-        var sb = Pool.StringBuilder.Get();
-        var chs = str.ToCharArray();
-
-        for (var i = 0; i < chs.Length; i++)
-        {
-            var rs = Get(chs[i]);
-            if (!rs.IsNullOrEmpty()) sb.Append(rs[0]);
-        }
-
-        return sb.Put(true);
+        var rs = GetAll(str);
+        return rs.Select(e => e[0]).Join("");
     }
 
     ///// <summary>取各字符的拼音首字母</summary>

XUnitTest.Core/Common/PinYinTests.cs

@@ -30,7 +30,8 @@ public void GetFirst()
         Assert.Equal('Z', p);
 
         var py = PinYin.GetFirst("重庆");
-        Assert.Equal("ZQ", py);
+        Assert.Equal("CQ", py);
+        //Assert.Equal("ZQ", py);
     }
 
     //[Fact]