Structures

There are mainly 3 types of structure for a language. flat, nested, and flat-nested.

Flat

Programs in flat languages can be split into a sequence of commands, the commands may have arguments, but these arguments are not automatically passed from the previous command.

Example of flat languages:

• brainfuck
• subleq

Most esolangs are flat.

Nested

Programs in nested languages are like expressions, every command has no argument or has its arguments passed from its sub-command, and usually returns a value. These languages are usually parsed recursively.

Example of nested languages:

• Setlang
• 13 bytes :D

Flat-Nested

Programs in flat-nested languages can be split into a sequence of nested commands.

Example of flat-nested languages:

• C
• Python