Category "types"

OCaml explicit type signatures

In Haskell, it is considered good practice to explicitly declare the type signature of your functions, even though it can (usually) be inferred. It seems like t

How to avoid this kind of notation " | undefinded " in typescript?

It's not essential, but I'm asking out of curiosity. In Object type we can declare optional property by using ?: operator, but is there a similar shorthand when

Limit file format when using <input type="file">?

I'd like to restrict the type of file that can be chosen from the native OS file chooser when the user clicks the Browse button in the <input type="file">

What is the difference between “int” and “uint” / “long” and “ulong”?

I know about int and long (32-bit and 64-bit numbers), but what are uint and ulong?