October 25th, 2017 Week 43rd Wednesday

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Perseverance is not a long race; it is many short races one after another.

坚持不是一个长跑,她是很多一个接一个的短跑。

Today I want to compile the tangram-es library for my system and try to run its examples.

After working on the compilation for just thirty minutes, I finished the job, very simple job.

Thanks to the well-organized program and perfect makefile, the job is so easy.

But then I tried to impplement the library with my own application using Qt, I failed to compile my app successfully, there were several header-files that can\'t be found.

Frustrated, maybe I should be more patient to code for my application with my own solutions.

It isn\'t a good way to just use other\'s library, at least I should read their codes first and try to make a clear understanding about how they realized the functions.

 

A tough lesson in life that one has to learn is that not everybody wishes you well.

我们必须从生活中吸取的惨痛教训是:不是所有人都希望你过得好。

From Dan Rather.

Now that there are some people who are willing to see you have lived an extraordinary life, you should try your best to live a more extraordinary life.

That is the best way to answer those people.

How to evaluate an algorithm\'s performance?

Generally we would analyze it in two dimensions:

The time-efficiency and the space-efficiency.

Considering that the memory-space is not a vital problem in nowadays, so its time-performance would be the very thing that decide whether it is a good algorithm or not.

Please spare some time to read this blog:

https://www.cnblogs.com/sirkevin/p/8282595.html

How to analyze the efficiency of an algorithm?

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