摘要: A Private Conversation
Last week I went to the theatre, I had a good seat, the play was very interesting, but I did not enjoy it. A young man and a young woman were sitting behind me, they were talking loudly. I got very angry, I could not hear the actors. I truned round.
I looked at the man and the woman angrily. The did not pay any attention. In the end, I conld not bear it. I turned round again.
'I can't hear a word!' I said angrily.
'It's none of your busine
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摘要: 了其然,知其用,研其究,发其思
了其然:对最近新出现的理念技术能够有所了解,简单知道其可以解决什么问题,分析一下是否最近自己所需要应用,或可被更好的利用。
知其用:知道如何应用这门新技术。简单的应用一般花费不少时间,但是想复杂的应用,需要耗费的时间和精力可就多了。如果把握不好,盲目的应用和学习,会浪费不少时间。
研其究:对新技术新理念研究其深层次的原理,框架,结构。
发其思:这是最难的一层,首先需要有研其究的基础,这本身就是一个高难度的事情。而研究之后,能够发散思维,扩充或本土化改造,则更是艰巨的事情。
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摘要: My Eclipse 5.5 New and Noteworthy Features
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摘要: SQL语句性能调整的目标是:
去掉不必要的大表全表扫描---不必要的大表全表扫描会造成不必要的输入输出,而且还会拖垮整个数据库;
检查优化索引的使用---这对于提高查询速度来说非常重要
检查子查询---考虑SQL子查询是否可以用简单连接的方式进行重新书写;
调整PCTFREE和PCTUSED等存储参数优化插入、更新或者删除等操作;
考虑数据库的优化器;
考虑数据表的全表扫描和在多个CPU的情况下考虑并行查询;
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摘要: NetBeans.org is proud to announce the availability of NetBeans IDE 6.0 Preview (Milestone 9). Here are some of the highlights:
Ruby/JRuby/Ruby on Rails Support
A Smarter and Faster Editor
Improved Swing development (Swing Data Binding)
Integrated Profiling
Integrated Visual Design for Web Applications
New, Integrated UI for CLDC/MIDP and CDC development
The final NetBeans IDE 6.0 release is planned for November, 2007. As always, we welcome and encourage yo
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