PythonPython How to add custom fields to logging formatter
logging module is a useful module for logging. The log format somehow needs to be defined to make it more readable. The ...
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Python
GolangGolang When should Atomic be used instead of Mutex?
I have used sync.atomic for the first time in my work. It's lighter than Mutex. If the program requires speed and it doe...
DockerDocker How to set up USB hotplug for a USB device
I needed to configure Docker container that can recognize a USB device. I used --device option for the first release. It...
JavaScript/TypeScriptHow to write clean if-else statements
if-else statements can easily be nested and make the code unreadable if we don't consider anything to write it. if-else ...
PythonPython How to convert a nested JSON to a class
It's easy to convert an object to JSON and JSON to an object in Python. json module provides the following functions. du...
Dart and FlutterFlutter Solve major problems related to TextField
TextField is often used for input in Flutter but we (at least I) run into a lot of problems to achieve what we want. I o...
Dart and FlutterFlutter Timestamp input by TextField
I posted the following article before to get Date and Timestamp. But sometimes it's better to have a simple UI. I wanted...
GolangGolang Unit testing with Gomega matcher
A function result somehow needs to be compared in a unit test to know whether the function returns the expected value or...
GolangGolang A good way to get struct data with gomega matcher
It took me about 20 minutes to know the way to access a property in a struct that is passed by a channel in a unit test....
JavaScript/TypeScriptRead all files and subdirectories in iterative call
I needed to implement a function that reads all the files and the subdirectories. Many frameworks offer such a function ...
