On Thursday, 8 November 2018 at 17:50:20 UTC, welkam wrote:
On Wednesday, 7 November 2018 at 22:08:36 UTC, H. S. Teoh wrote:
Now for all of you who think that one letter variables are ok
here is exercise. Go and open src/dmd/func.d with your favorite
code editor. Find function FuncDeclaration resolveFuncCall().
Its around 170 LOC long. Now find all uses of variable Dsymbol
s. Did you found them all? Are you sure? Ok now do the same for
variable loc. See the difference?
If we were to look for an s of a specific type, it's not just the
editor we would need, now would we?
Java-style verbosity IMO makes code *harder* to read because
the verbosity gets > in your face, crowding out the more
interesting (and important) larger picture of code structure.
What editor do you use?
Here is the worst example to prove my point but its still
sufficient. All editors worth your time highlights the same
text when selected and here is example of one letter variable.
https://imgur.com/a/jjxCdmh
and tree letter variable
https://imgur.com/a/xOqbkmn
One keystroke (well ok, two keys because it's *) ;)
https://dl.dropbox.com/s/mifou0ervwspx5i/vimhl.png
where is all that crowding and loss of large picture you speak
of? Its the opposite. Code structure is more clear with longer
variable names than one letter.
I don't think H.S. meant one letter vs. three. Java tends to be
obtusely verbose. Wear down your fingers/eyes kind of verbose.
As Walter said in his recent talk, the length of variable
names (or identifiers in general, really) should roughly
correspond to their scope
At best this is argument form authority. You said how thing
should be not why. For argument sake imagine situation where
you need to expand function. By your proposed rules you should
rename local variables to longer names. Thats ridiculous. Yes I
watched that presentation and fully disagree with Walter and
know for sure he doesnt have sound argument to support his
position.
IMHO, one/two letters are fine so long as the variable's scope
spans at most two pages. If scope is larger, name should be
longer.
