WORKING.value < Status.BREAK.value) # 也可以迭代 for s in Status: print(s) 2. 为什么要有枚举? 为什么要有枚举呢?PEP 435中这样介绍 The properties of an enumeration are useful for defining an immutable, related set of constant values that may or may not have a semantic meaning.[2] 在Py...
Facilitating debugging by taking advantage of readable names instead of values with no explicit meaning Providing a single source of truth and consistency throughout the codeNow that you know the basics of enumerations in programming and in Python, you can start creating your own enum types by us...
I generally don't favor "omnipotent" code - meaning code that claims to deal with "everything". This kind of approach always turned against me. Instead, I favor clear separation of concerns and responsibilities, according to the maxim "do one thing, and do it well". Anyway, I doubt whet...
I also understand the argument about the name conveying the meaning, andby_valueexpecting only a field (not a boolean) would sound weird, whilefieldimplying by value is not obvious. OK, I just tested and now I get your point. If I setFieldinstead ofStringorInteger, it works the same. ...
, meaning it may or may not be legal and you have to explicitly check it. (Optionals are essentially a syntactic Maybe Monad, and way off topic.) You can even define an enumeration in terms of itself, which is just all kinds of weird. From the documentation: indirect enum Arithmetic...
In the code, strings in static classes even look similar to enums. Developers can get the string by referring to the class and using dot notation to call the relevant string. “You have very readable code, it looks kind of enum-y, and your coding experience is about the same,” Wilson...
Although most of us recognize 86400 as the number of seconds in a day, this may not be obvious to everyone and then there’s the issue of it being 1000 times greater than that number. The comment in the code listing helps by explaining the underlying meaning of the numbers, but wouldn...
This is really useful because it provides more context and meaning to your code. If you want, you can also provide one or more constructors to your Enum as it also supports constructor overloading like normal Java classes. This is very different from the enum you have seen in C or C++...
The code already exists in the Python documentation, so it has been vetted at some level The AutoNumberedEnum also allows the developer to make a clearer distinction between enumerations whose values have special meaning and those that do not. ...
(IDCODE or BYPASS) we are testing first. Assuming the chip is in the IDCODE state, meaning the IDCODE register is already attached to TDO, we only need to know the TDO line and TCK line, ignoring the other pins. Assuming your search resulted in only one TCK candidate line testing is...