ChuckLu - 博客园

2020年6月2日

Why are C# 4 optional parameters defined on interface not enforced on implementing class?

摘要： Why are C# 4 optional parameters defined on interface not enforced on implementing class? UPDATE: This question was the subject of my blog on May 12th 阅读全文

posted @ 2020-06-02 16:40 ChuckLu 阅读(151) 评论(0) 推荐(0)

Method overrides should not change parameter defaults

摘要： Method overrides should not change parameter defaults using System; namespace ConsoleApp1 { public class Base { public virtual void Write(int i = 42) 阅读全文

posted @ 2020-06-02 16:10 ChuckLu 阅读(228) 评论(0) 推荐(0)

Why use a public method in an internal class?

摘要： Why use a public method in an internal class? UPDATE: This question was the subject of my blog in September 2014. Thanks for the great question! There 阅读全文

posted @ 2020-06-02 15:40 ChuckLu 阅读(229) 评论(0) 推荐(0)

Git Submodules vs Git Subtrees

摘要： Git Submodules vs Git Subtrees Subtrees vs Submodules The simplest way to think of subtrees and submodules is that a subtree is a copy of a repository 阅读全文

posted @ 2020-06-02 13:53 ChuckLu 阅读(459) 评论(0) 推荐(0)

2020年5月28日

To Allow App through Windows Defender Firewall in Command Prompt

摘要： Add or Remove Allowed Apps through Windows Firewall in Windows 10 Starting with Windows 10 build 16193, Windows Firewall has been renamed to Windows D 阅读全文

posted @ 2020-05-28 13:23 ChuckLu 阅读(502) 评论(0) 推荐(0)

2020年5月27日

Subquery using Exists 1 or Exists *

摘要： Subquery using Exists 1 or Exists * 回答1 No, SQL Server is smart and knows it is being used for an EXISTS, and returns NO DATA to the system. Quoth Mic 阅读全文

posted @ 2020-05-27 14:50 ChuckLu 阅读(253) 评论(0) 推荐(0)

NOT IN vs. NOT EXISTS vs. LEFT JOIN / IS NULL: SQL Server

摘要： NOT IN vs. NOT EXISTS vs. LEFT JOIN / IS NULL: SQL Server NOT IN ? 1 2 3 4 5 6 7 SELECT l.id, l.value FROM [20090915_anti].t_left l WHERE l.value NOT 阅读全文

posted @ 2020-05-27 14:35 ChuckLu 阅读(419) 评论(0) 推荐(0)

2020年5月26日

Can I disable git pull?

摘要： Can I disable git pull? I guess the problems you refer to are merge conflicts that may happen if your local branch diverged from the remote. In that c 阅读全文

posted @ 2020-05-26 13:57 ChuckLu 阅读(321) 评论(0) 推荐(0)

2020年5月25日

xml security issue

摘要： https://github.com/tonyqus/npoi/commit/9f402aa5f0ee0fc7d77002c9d39d3a84d90a9ecb https://docs.microsoft.com/en-us/dotnet/api/system.xml.xmlreadersettin 阅读全文

posted @ 2020-05-25 19:03 ChuckLu 阅读(181) 评论(0) 推荐(0)

Non-scalar subquery in place of a scalar

摘要： Subquery may return more than one row. A subquery can only be scalar, meaning that it can return just one value. Even if you correctly place just one 阅读全文

posted @ 2020-05-25 14:04 ChuckLu 阅读(649) 评论(0) 推荐(0)

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