Ten Lessons I Learned from Fixing my Laptop's Motherboard
A month ago I managed to break my laptop, by reversing the polarity of
a universal power supply.
The repair shop diagnosed the problem as a failed motherboard,
and asked for €659 to replace it.
I found the price preposterous and the notion of throwing away a motherboard
for a single failed component ecologically unsound.
Here is how I fixed the laptop on my own, and what I learned in the process.
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Code Verification Scripts
Which of my classes contain instance variables?
Which classes call the method
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but don't call the method
These and similar questions often come up when you want to verify
that your code is free from some errors.
For example, instance variable can be a problem in servlet classes.
Or you may have found a bug related to the
and you want to look for other places where this occurs.
Your IDE is unlikely to answer such questions,
and this is where a few lines in the Unix shell can save
you hours of frustration.
Choosing and Using Open Source Components
The developers of the SQLite open source database engine estimate that it’s deployed in roughly half a billion systems around the world (users include Airbus, Google, and Skype). Think of the hundreds of thousands of open source components, just one click away from you. If you know how to choose and use them effectively , your project can benefit mightily.
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