Cliff Dyer jcdyer

Keybase proof

I hereby claim:

I am jcdyer on github.
I am jcdyer (https://keybase.io/jcdyer) on keybase.
I have a public key ASAPhLGO0eSvrDxJPWV_c0wAXZhdWtRTaD7P42OyX2LftQo

To claim this, I am signing this object:

Here's a fun smallish, intermediate level rust exercise: Implement an extension trait that allows you to call .skipping(n) on an iterator, and only yield every nth item, starting with the first one. (An extension trait is one that adds functionality to anything that already implements a existing trait, usually one in std).

It should pass the test below.

Here are some hints if you need help:

For examples of how to implement Iterator combinators, see the documentation (especially the src link) for the std::iter::Take struct, and the Iterator::take() method (or any of the other iterator combinator methods.
For examples of how to implement an extension trait, see the excellent byteorder crate (by Andrew Gallant, a.k.a. BurntSushi), and its ReadBytesExt and WriteBytesExt traits, which let you read and write integers of different sizes

	import codejail.languages

	CODE_JAIL = {
	'jails': [
	{
	'command': 'python',
	'bin_path': '/edx/app/edxapp/venvs/edxapp-sandbox/bin/python',
	'user': 'sandbox',
	'lang': codejail.languages.python2,
	},

	[package]
	name = "hello"
	version = "0.1.0"
	authors = ["J. Cliff Dyer <[email protected]>"]

	[dependencies]
	clap = "~2"

	[package]
	name = "edge"
	version = "0.1.0"
	authors = ["J. Cliff Dyer <[email protected]>"]

	[dependencies]
	indradb = "0.12.0"
	indradb-lib = "0.12.0"
	serde_json = "*"
	uuid = "*"

	[package]
	name = "hops"
	version = "0.1.0"
	authors = ["J. Cliff Dyer <[email protected]>"]

	[dependencies]
	bytes = "*"
	clap = "*"
	futures = "*"
	rand = "*"

	use std::borrow::Cow;
	use std::convert::TryInto;

	enum BsonType {
	String,
	Document,
	Array,
	}

	impl BsonType {

	use gs1::Gtin;

	pub mod owned {
	use gs1::Gtin;

	// This is constructed as a newtype wrapper around Gtin that only exists
	// to prove that the GTIN belongs to the currently logged-in user.
	#[derive(Debug, Clone)]
	pub struct OwnedGtin(Gtin);

	Climbing gear:
	Quickdraws -- 6 @ 11cm, 4 @ 18cm https://hownot2.store/products/orbit-mixed-express-ks
	Alpine draws -- 2 @ 60cm https://hownot2.store/products/miniwire-alpine-draw
	Dyneema sling -- 2 @ 120cm https://hownot2.store/products/dyneema-sling-8mm?variant=46378769252667

	Dorothy Dunnett, The ringed castle (book 5) https://www.regulatorbookshop.com/book/9780525565284
	Dorothy Dunnett, Checkmate (book 6) https://www.regulatorbookshop.com/book/9780525565291


	2 tickets to one of:

	def add_and_double(x, y):
	return 2 * (x + y)