What does function sizeof() do? sizeof("a") 1 julia> length('a') 1 julia> sizeof('a') 4 julia> sizeof("∀") 3 julia> sizeof('∀') 4 julia> sizeof("🍎") 4 And if sizeof() gives us the size of used memory in bytes why there is difference between “a” and ‘a’ ?

What is difference between "a" and 'a'?

Tamas_Papp October 6, 2019, 9:34am 4

See the help, eg ?sizeof.

This is extensively documented, please read this chapter: