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Th
Th is an esoteric programming language consisting of one named pair of values, created by User:Scan in 2008. A value is again either a named pair or an atom. Is it similar to Lisp, but the length of a list is fixed. Thus, a pair represents an atomisable value itself, meaning a pair is just a thing to be evaluated. Eventually, a Th program is pretty simple.
Types
Th is not type-safe. Every atom is seen as an atom. The programmer is supposed to watch what they're typing.
Predefined pairs
| Pair name | Description |
|---|---|
+(,)
|
Arithmetic addition |
*(,)
|
Multiplication |
-(,)
|
Subtraction |
/(,)
|
Division |
print(,)
|
Prints the values |
read(,)
|
Evaluates to an atom read from the keyboard, prints left before and right after input |
let(x,v)
|
Defines x as a constant that has the given value in the containing pair
|
More to come (I appreciate suggestions).
Examples
Hello, world!
print("Hello, ", "World!")
This is equivalent to:
print("Hello, World!", nil)
Addition
print("a + b = ", +(read("a = ", "\n"), read("b = ", "\n")))