My main problem while learning new programming languages

naming things happens to be the most difficult things to do in programming

also, length should make you think that array is one dimension only. While size, well this could be n-dimensional

I see you have not yet encountered Lua...
#array -- yes, this returns the length, however do NOT call it on non-sequences as the result is undefined in that case and can be any number or reference (u0b34a0f6ae for Lua 5.1, cubuspl42 for Lua 5.2 and so on...)

@bytecode for _,__ in pairs(list) do count = count + 1 end

@deviloper Naming things, cache invalidation and off by 1 errors are the two most difficult problems :-)

@muttley you mentioned actually 3 problems. Oh. I see. sorry :-)

@AlgoRythm yes... but # is the ".length()" in Lua

@bytecode Not before Lua 5

Or some recent version. Maybe even 5.2.

There’s also .count, .count(), and len(arr)

The rust function naming conventions have changed my way of thinking about what a function does e.g to_string does a lot of work but as_string is light.

To me:
Length = 1-dimensional
Size = n-dimensiomal
Count = doesn't keep track of its size as it grows and has to compute its size

@AlgoRythm hm... I used it when the ComputerCraft mod for Minecraft first came out... that was, 2010/2011 I think ¯\_(ツ)_/¯

Unless you are talking in Python. In which case it is
Len(Array)

we use commas between tags here fyi

also "len(array)" best length func