When comparing Visual Basic vs OCaml, the Slant community recommends OCaml for most people. In the question“What are the best (productivity-enhancing, well-designed, and concise, rather than just popular or time-tested) programming languages?” OCaml is ranked 14th while Visual Basic is ranked 74th. The most important reason people chose OCaml is:
Functional programming is based on the lambda calculus. OCaml is in its functional parts almost pure lambda calculus, in a very practical manner: useful for many daily programming tasks. The acitve development makes improvements to the type system like generalized algebraic data types (GADT) or polymorphic variants, so when learning this language you get at once a down to earth usable compiler and advanced abstraction features.
Specs
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Pros
Pro Very simple and efficient language (in terms of number of lines of code)
Pro Easy to learn
Pro Capable language
Compiling to the same intermediate language as C# and compiling against the same .NET libraries, the differences between C# and VB are largely syntactic. Most VB features even have a 1:1 correspondence with C#.
Pro Huge community
Being Microsoft's introductory language, visual basic has a strong and large community.
Pro English-like syntax
Pro Flexible, won't get in the way of a beginner
A beginner developer can worry about the code logic first, and then learn the language. Visual Basic lets you do basically anything if you really want, while still having the power to be a fully statically-typed and object oriented.
Pro Sibling to C#
If you don't want to start with C# because of its high learning floor, you can start with VB. It is dead easy to switch between the two.
Pro Easy to deal with Win32API
Using platform invoke, it's very easy to use the win32 api in vb.net. Neat and clean syntax. Not a mess like c# (meaning those "{}"s).
Pro Actively-developed functional programming language at the forefront of research
Functional programming is based on the lambda calculus. OCaml is in its functional parts almost pure lambda calculus, in a very practical manner: useful for many daily programming tasks. The acitve development makes improvements to the type system like generalized algebraic data types (GADT) or polymorphic variants, so when learning this language you get at once a down to earth usable compiler and advanced abstraction features.
Pro Encourages functional style
It steers you towards a functional style, but doesn't bother you with purity and "monads everywhere" like other languages, such as Haskell.
Pro No windows!
Strong focus on *nix systems, lacking native support for MS Windows
Lacks native support for Windows systems.
Pro Sophisticated and easy-to-use package manager
OPAM is a package manager for OCaml, which is really easy to use, just like npm. It creates a .opam folder in home directory.
The documentation is great as well, and you can switch between multiple versions of OCaml for each project. You can also package your project and publish it on OPAM repositories, even if the dependencies do not exists on OPAM.
Pro One of the best for writing compilers
OCaml is compiled to native binary, so it's amazingly fast. Being a member of ML-family languages, it has expressive syntax for trees, and has great LLVM support.
Pro Stable syntax
The syntax is consistent, some syntaxic sugar but at a reasonable level, so reading code of others isn't too much confusing.
Pro Strong editor integration
The merlin
editor tool provides all you need to develop OCaml in your favourite editor.
Cons
Con Almost as bad as Python, but less used
Con Bad reputation
Being a visual basic programmer, you're unlikely to be taken seriously by other programmers. According to the 2015 Stack Overflow survey, it was voted the second most dreaded language among developers.
Con Tends to get clunky due to prebuilt assets
Con Strong focus on *nix systems, lacking native support for MS Windows
Lacks native support for Windows systems.