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equals vs Arrays.equals in Java
... the two arrays are equal if
* they contain the same elements in the same order. Also, two array
* references are considered equal if both are <tt>null</tt>.<p>
*
* @param a one array to be tested for equality
* @param a2 the other array to be tested for equality
* @return &...
How to find Unused Amazon EC2 Security groups
... Display Security Groups left to audit / delete
echo "select * from groups order by groupid" | mysql $DBCONFIG $DB | sed 's/groupid\t/groupid\t\t/'
And here is the sql to create the database.
-- MySQL dump 10.13 Distrib 5.5.41, for debian-linux-gnu (x86_64)
--
-- Host: localhost Database: aws...
Best practices for exception management in Java or C# [closed]
...ion handling should be something around these guidelines, in no particular order:
For the sake of maintainability, always log exceptions so that when you start seeing bugs, the log will assist in pointing you to the place your bug has likely started. Never leave printStackTrace() or the likes of i...
windbg 备忘 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...ts occur.
--引http://www.vcfans.com/2010/04/windbg-study-notes-order.html
WinDbg学习笔记整理
去年看WinDbg帮助时随手记下来的一点资料，放上来保存一下，有新内容我会陆续更新上来。
1. 命令行前数字的含义
用户调试模式下，如2:005,...
What happens to C# Dictionary lookup if the key does not exist?
... be better, but if you want to check if the dictionary contains the key in order to avoid duplicate additions, I would say ContainsKey is just as good (if not better).
– Fredrik Mörk
Jan 26 '10 at 11:25
...
How to move a model between two Django apps (Django 1.7)
..., from an SQL point of view you can apply the trick of this answer. But in order to achieve this only via Django, one approach I can think of would be along the lines of @ozan answer, except the first step would be to duplicate the tables involved in MTM relationship (one version of the dupes in eac...
What are the key differences between Apache Thrift, Google Protocol Buffers, MessagePack, ASN.1 and
...5
Binary Formatter 748 0.0344
Options: (T)est, (R)esults, s(O)rt order, (S)erializer output, (D)eserializer output (in JSON form), (E)xit
Serialized via ASN.1 DER encoding to 148 bytes in 0.0674ms (hacked experiment!)
...
Returning an array using C
... from Java programming, I am used to being able to say int [] method() in order to return an array. However, I have found out that with C you have to use pointers for arrays when you return them. Being a new programmer, I really do not understand this at all, even with the many forums I have looked...
Proper way to declare custom exceptions in modern Python?
...eption(Exception):
pass
Again, the problem with the above is that in order to catch it, you'll either have to name it specifically (importing it if created elsewhere) or catch Exception, (but you're probably not prepared to handle all types of Exceptions, and you should only catch exceptions y...
Is there more to an interface than having the correct methods
... should provide inheritance, encapsulation, modularity and polymorphism in order to be a fully-featured Object Oriented language. In dynamically-typed - or duck typed - languages (like Smalltalk,) polymorphism is trivial; however, in statically typed languages (like Java or C#,) polymorphism is far...