As a coder, do you use deliberate memorization to be more efficient?

I write a code quite seldom, unfortunately, but usually I disable all autocompletions and even refuse to copypaste, especially if I'm moving through some test examples. For me, typing down the text example, letter by letter, is very different experience from just copying and just seeing that it works as expected. But I know, there are some languages like Java, where this advice can be useless and maybe even harmful because of too much of boilerplate.

I have a memory like a goldfish and it has done me no harm. In fact I would say that if you want to keep up, don't worry about memorising. Your head has only so much room and stuff is only a click away these days. Most of the new stuff I know has been from looking up again things I should know and finding there is now a better way. YMMV

I do not, though memorization comes naturally through repetition.

There are too many dsl SDK frameworks out there to memorize.

A good editor with autocompletion and help goes a long way to do the memorization for you.