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Coderek's blog

Loneliness is the gift of life

Recently, I discovered two interesting data structures, Segment tree and Binary index tree (BIT). Both data structures are good at managing some range of aggregated values. For example, in a discrete…

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Any content management system must have a robust "auth" component. "Auth" stands for authentication and authorization. Authentication is an well talked topic. Authorization is the interest of this po…

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Stack Overflow

I am a veteran stack overflow user. Most of time I only read answers I needed. I rarely find any questions I can anwser because, they are either already handled by other professional or too complica…

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这几年我都没有买什么电脑,因为公司里的笔记本可以带回家用,速度快,屏幕好,用的很爽。我自己是有台笔记本的,只不过有点旧,四年前买的二手MacBook,4G内存,i5的处理器。但可能是已经用了好几年了,速度异常的慢。 最近公司里的裁员风波让我意识到,公司的电脑私用有可能导致自己的东西丢失。被裁员的人都是当天就被要求交还电脑离开的。有点残酷,但这也是规章制度。 在家里还是不要太依赖公司的电脑。想过要…

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MyReader

Tough I haven't been using Google Reader(GReader) for quite some time, but I always consider it as the best RSS reader available at the time. It is simple to use, has clean UI for reading. For the pa…

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One key quality of a great programmer is that he must be good at algorithms and data structures. I deeply believe so. I didn't do very well in this area in my University trainings. This is something …

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Coding android application is always an enjoyable process for me. I find the following stuff intrigued me a lot. Self-contained activity and task stack As a mobile OS, android is very memory-conser…

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This is a question I posted on stackoverflow. We are creating an android application which requires multiple ways to secure authentications. Current solution: username/password …

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IBM worklight

This is an article followed by a training given by IBM worklight team. What is worklight? Worklight is an end to end mobility solution covering app development and mobile application management. It c…

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Android Development team tries to make styling applications as easy as styling a web page. We can change the look and feel of every element within the application. For example, the background of text…

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