# Keta

*This article is not detailed enough and needs to be expanded. Please help us by adding some more information.*

**Keta** is what happens when you mix the words "Keyboard" and "Tacit" together. The language is partially inspired by the tacit execution of Jelly, after I decided that the tutorial for Jelly was just too complicated. As I sometimes say: if you don't understand it, make your own!

It's a big ol' work in progress thus far, so I'll place some examples here:

*Operators shown here are purely for design experimentation and may not reflect the final system of operators*

## Terminology

Nilad -> A function that doesn't take any inputs. Usually a constant Single -> A function that only takes a single input Infix -> A function that takes two arguments: left and right Left argument -> the expression to the left of a function Right argument -> the expression to the right of a function Flow -> A complete line of blocks Block -> A series of Nilads, Singles and Infixes

## Examples

### Make me a square!

Keg got 11 bytes on this challenge.

P[DD+s]S3

Expands to:

Shape(Palindromise(Add(Double(Double(input)), Space)), 3)

9 bytes (Keta) vs 11 bytes (Keg) .

### Output Distinct Factor Cubiods

Keg didn't participate in this challenge

*R= F?f^

Pseudo:

function f reduce the input via multiplication return that result equal to the input

function main generate factors of input filter list by above flow (f)

### Swap good and bad

Keg got 7 bytes on this challenge (first place btw)

-"....

Note that this uses a reverse token flag. But that's what the keg answer does.

6 bytes (Keta) vs 7 bytes (Keg).

### N(e(s(t))) a string

Keg got 12 bytes

M\(+\)*! ININIM Add(Map(input, "("), Times(")", length(input)))

`--mapoffbyone` 8 bytes (Keta) vs 12 bytes (Keg)

### DDoouubbllee SSppeeaakk

Keg got 3 bytes

i

Expands to:

interleave(input, input)

1 byte (Keta) vs 3 bytes (Keg)

## Chain Rules

This is a list of how patterns are evaluated within Keta (ekg)

Nilads: N n Ñ –> Nilads

Singles: S s Š –> Monads

Infixes: I i Ī –> Dyads

L L* L& –> Left argument – implicit/whatever is to the left

R R* R& –> Right argument – implicit/whatever is to the right

`{...}`

means that the expressions are blocked together

`ND`

->`N I R`

`SN`

->`S(N)`

`Ss`

->`S(s(R))`

`SI`

->`S(R) I R*`

`IN`

->`L I S`

`IS`

->`L I S(R*)`

`Ii`

->`{L I R} i R*`

`SNI`

->`S(N) I R`

`SsN`

->`S(s(N))`

`SsŠ`

->`S(s(Š(R)))`

`SsI`

->`S(s(R)) I R*`

`SIN`

->`S(R) I N`

`SIs`

->`S(R) I s(R*)`

`SIi`

->`S(R) I {L* i R*}`

`INi`

->`{L I N} i R*`

`ISN`

->`L I S(N)`

`ISs`

->`L I S(s(R*))`

`ISi`

->`{L D S(R*)} i R&`

`IiN`

->`{L I R} i N`

`IiS`

->`{L I R} i S(R*)`

`IiĪ`

->`{{L I R} i R*} Ī R&`

Blocks are evaluated using the triplet rules if possible, otherwise the pair rules are used, otherwise things are evaluated as is

## External References

## Very WIP Reference List

Command | Description | Arity | Left | Right | Pythonish Representation ( ): NOP | NA | NA | NA (!): Length of right argument | 1 | NA | Iterable | length(right) : Factorial of right argument | 1 | NA | Number | factorial(right) ("): Start/close string | 0 | NA | NA | NA (#): Comment | NA | NA | NA | NA ($): Sort the right argument | 1 | NA | Iterable | sorted(right) (%): Moduluo of left and right | 2 | Number | Number | left % right : Formats a string | 2 | String | String | left.format(right) (&): Logical and | 2 | Any | Any | left && right ('): Delimit a variable name ((): Start a list | NA | NA | NA | NA ()): End a list | NA | NA | NA | NA (*): Multiply left and right | 2 | Number | Number | left * right : Repeat left by right times | 2 | Iterable | Number | left * right : Product of iterables | 2 | Iterable | Iterable | list(itertools.product(left, right)) (+): Add left and right | 2 | Number | Number | left + right : Add left and right | 2 | String | String | left + right : Append right to left | 2 | List | Any | left.append(right) (,): Separate list items | 0 | NA | NA | NA (-): Subtraction | 2 | Number | Number | left - right (.): Special constants | 0 | NA | NA | NA (/): Divison | 2 | Number | Number | left / right (0): Number (1): Number (2): Number (3): Number (4): Number (5): Number (6): Number (7): Number (8): Number (9): Number (:): Double the input | 1 | NA | Any | [right, right] (;): Decrement | 1 | NA | Any | right - 1 (<): Less than | 2 | Any | Any | left < right (=): Equality | 2 | Any | Any | left == right (>): Greater than | 2 | Any | Any | left > right (?): Input, eval'd | 0 | NA | NA | keta_eval(input()) (@): String ender (A): Absolute value | 1 | NA | Number | abs(right) (B): Binary to base 10 | 1 | NA | Number | int(2, right) (C): Ceiling | 1 | NA | Number | math.ceil(right) (D): Double | 1 | NA | Number | right * 2 (E): Eval | 1 | NA | String | keta_eval(right) (F): Factorise | 1 | NA | Number | find_factors(right) (G): Genrate range from 0 to right (inclusive) | 1 | NA | Number | range(0, right + 1) (H): Halve | 1 | NA | Number | right / 2 (I): If statement | 2* | Expression | Block | if(expression, blocks) (J): Join x by y | 2 | Iterable | String | right.join(left) (K): Constant library | 1 | NA | Character | constants[right] (L): List range | 2 | Number | Number | range(left, right + 1) (M): Map function to iterable | 2 | Iterable | Block | map(right, left) (N): Negate | 1 | NA | Number | right * -1 (O): One-dimensionify a list (flatten) | 1 | NA | Iterable | [item for sublist in l for item in sublist] (P): Permutation | 2 | Iterable | Number | itertools.permutations(left, right) (Q): Quit/terminate program | 0 | NA | NA | exit() (R): Reduce by block | 2 | Iterable | Block | functools.reduce(right, left) (S): Square | 2 | Iterable | Number | textwrap.wrap(left, right) (T): Top of stack | 1 | NA | Iterable | right[0] (U): Uniquify | 1 | NA | Iterable | unique(right) (V): Variable set | 2 | String | Any | left = right (W): While loop | 2 | Expression | Block | While(left, right) (X): Exclude/remove items | 2 | Iterable | Any | list(filter((right).__ne__, left)) (Y): Loop variable (Z): Zip | 2 | Iterable | Iterable | zip(left, right) ([): Start a block (\): Escape the next character (]): End a block (^): Exponate (_): Truthify (`): String ender (a): all | 1 | NA | Iterable | all(right) (b): binary representation | 1 | NA | Any | bin(right) (c): contains | 2 | Iterable | Any | right in left (d): divmod | 2 | Number | Number | divmod(left, right) (e): exec | 1 | NA | String | keta_exec(right) (f): filter | 2 | Iterable | Block | keta_fitler(left, right) (g): generate exclusive range | 1 | NA | Number | range(0, right) (h): hack/stride | 2 | Iterable | Iterable(Number, Number) | left[right[0]:right[1]] (i): loop variable (j): loop variable (k): loop variable (l): Lookup/index | 2 | Iterable | Any | left.index(right) (m): maximum | 2 | Any | Any | max(left, right) (n): newline | 0 | NA | NA | NA (o): or | 2 | Any | Any | left or right (p): print | 1 | NA | Any | print(right) (q): quoted | 1 | NA | Any | str(right) (r): repeat | 2 | Number | Block | repeat(right, left) (s): shape | 2 | Iterable | Number | shape(left, right) (t): tail of stack | 1 | NA | Iterable | right[-1] (u): uniquified sorted | 1 | NA | Iterable | sorted(uniquified(right)) (v): variable get | 1 | NA | String | variable_name (w): wrap | 2 | Iterable | Number | left[::right] (x): index | 2 | Iterable | Number | left[right] (y): loop variable (z): z(s)leep | 1 | NA | Number | time.sleep(right) ({): Start a block (|): Seperate items (}): End a block (~): Random number