Should a programmer remember or understand?

Question

Programming

Hello
, As a beginner in your craft, it is not yet clear
to me As a future programmer, I need to remember or understand the principle of operation (well, let's say some library)
I understand that I need to remember how to say the word "while" or "for" in Python
But I need to memorize functions from modules?
Or should I just write them out somewhere and use them as needed.

Answer 1

Remember what is used constantly. Everything else is in the guides. However, frequently used itself will be deposited in memory. There is an old school rule here - understanding is better than cramming.

Answer 2

Understand. With practice, you will remember. They have all been recorded several times on the Internet and intellisense

Answer 3

Understand of course.

Answer 4

Or should I just write them out somewhere

in a notepad or notebook

Answer 5

It's all called experience. It will come with age. So don't sweat it.

Answer 6

1. Remember the names and what they are for: 70-80%
2. Remember the order of variables and return values ​​of functions: 50-60% (frequently used only)
3. Understand the code and when it is more appropriate/rational to use which function: 100%
Knowing English translation of the function (the actions it performs, its APPROXIMATE purpose) - you can always use Google and read the manual.