HSL ~2022.2 %hw1

JavaScript isn't enabled in your browser, so this file can't be opened. Enable and reload.

HSL ~2022.2 %hw1

Homework #1 for Hoon School Live.

Homework exercises have two purposes for us: to help validate that you have learned the material that corresponds to a particular lesson, and to stretch you in grasping and applying the relevant concepts.

In particular, you learned about the following runes:

- `%-` cenhep, for applying a function
- `^-` kethep, for enforcing or converting the type of a value
- `:-` colhep, for making a cell (pair of nouns)
- `=/` tisfas, for assigning a name to a value
- `?:` wutcol, for making a decision

adambrettmalin@gmail.com Switch account

Email *

What is your planet or comet? (Type "our" in the Dojo of your ship to identify if you're not sure—your ship, not your fakeship.) *

Atoms

Atoms are bare values, but they have a type or aura which lets you distinguish, say, a 1 in binary 0b1 from a 1 in hexadecimal 0x1.

Find your planet's number by converting your ship’s name to a `@ud` aura. *

Find your planet's hexadecimal number by converting your ship’s name to a `@ux` aura. *

What are the types (auras) of each of the following atoms? *

@ud

@ub

@ux

@da

@rs

1.000

0x7fa.45e2

.2.718281828

0b11.1001

~1992.1.12..15.05.00

'hello Mars'

~sampel-palnet

Cells

Read about the `:` col family of runes in the docs:

https://urbit.org/docs/hoon/reference/rune/col

These build cells of various sizes (e.g. [1 [2 3]], etc.).

Create a duple, or 2-tuple, of 1 and 2, using a single col rune. *

Create a triple, or 3-tuple, of 'a', 'b', and 'c', using a single col rune. *

Create a quadruple, or 4-tuple, of ~zod, ~nec, ~bud, and ~wes, using a single col rune. *

Pinning Values

The =/ tisfas rune is helpful for preserving (“pinning”) values with names for use in subsequent expressions. For each of these, you should respond with the Hoon expression, not the resulting value.

In one expression, pin a value `three` and calculate 3×3 using the ++mul function (gate). *

In one expression, pin two values `ten` and `hundred` and calculate 10¹⁰⁰ using the ++pow function (gate). *

Making Decisions

We can cause a computation to choose between two alternatives using the `?:` wutcol rune.

Implement the piecewise boxcar function. Since we can't store expressions for future use yet, use 4 for the example input value (but pin it to a face `x`). (:= is not a rune, it's the mathematical symbols for "defined as". You can read it as an equals sign.) *

Implement the piecewise triangle function. Since we can't store expressions for future use yet, use 2 for the example input value (but pin it to a face `x`). *

Hoon Pronunciation

What are the pronounced names of each of the following runes?

%= *

$: *

:* *

~& *

|- *

What are your biggest remaining concerns, points of misunderstanding or fuzzy understanding, or other feedback on Lesson 1?

A copy of your responses will be emailed to the address you provided.

Submit

Clear form

Never submit passwords through Google Forms.

reCAPTCHA

Privacy Terms

This form was created inside of Tlon Corporation. Report Abuse

Forms