Arya Irani aryairani

.> builtins.merge

Some basics:

unique type Cat.Dog = Mouse Nat
unique type Rat.Dog = Bird

.> project.create bugreport
bugreport/main> pull @unison/json/releases/1.0.2 lib.json_1_0_2

success : '{Decoder} Text
success =
  array.at 0 (object.at "success" (object.at "authorizeduser" Decoder.text))

Take-home functional programming interview

This document is licensed CC0.

These are some questions to give a sense of what you know about FP. This is more of a gauge of what you know, it's not necessarily expected that a single person will breeze through all questions. For each question, give your answer if you know it, say how long it took you, and say whether it was 'trivial', 'easy', 'medium', 'hard', or 'I don't know'. Give your answers in Haskell for the questions that involve code.

Please be honest, as the interviewer may do some spot checking with similar questions. It's not going to look good if you report a question as being 'trivial' but a similar question completely stumps you.

Here's a bit more guidance on how to use these labels:

.> pull https://github.com/unisonweb/base_v2:.trunk .base

  Here's what's changed in .base after the merge:
  
  Added definitions:
  
    1.    unique type ANSI.Color
    2.    ability Abort (+2 metadata)
    3.    builtin type Any

	CREATE TABLE namespace_term (
	id INTEGER PRIMARY KEY NOT NULL,
	namesegment_id INTEGER NOT NULL REFERENCES text(id),
	referent_object_id INTEGER NOT NULL REFERENCES object(id),
	referent_component_id INTEGER NOT NULL,
	referent_constructor_id INTEGER NULL,
	);
	CREATE INDEX namespace_term_name ON namespace_term (
	namesegment_id
	);

	- job: homebrew_template
	dependsOn: multi_build
	steps:
	- task: DownloadBuildArtifacts@0
	# https://docs.microsoft.com/en-us/azure/devops/pipelines/tasks/utility/download-build-artifacts
	inputs:
	buildType: current
	downloadType: specific
	- script: \|
	osxhash=`shasum -a 256 $osxpkg \| cut -d " " -f 1`

	2021-05-12T01:43:07.8532430Z ##[section]Starting: Request a runner to run this job
	2021-05-12T01:43:08.0378711Z Can't find any online and idle self-hosted runner in current repository that matches the required labels: 'ubuntu-18.04'
	2021-05-12T01:43:08.0378831Z Can't find any online and idle self-hosted runner in current repository's account/organization that matches the required labels: 'ubuntu-18.04'
	2021-05-12T01:43:08.0379037Z Found online and idle hosted runner in current repository's account/organization that matches the required labels: 'ubuntu-18.04'
	2021-05-12T01:43:08.1876815Z ##[section]Finishing: Request a runner to run this job
	2021-05-12T01:43:16.7080880Z Current runner version: '2.278.0'
	2021-05-12T01:43:16.7108834Z ##[group]Operating System
	2021-05-12T01:43:16.7109807Z Ubuntu
	2021-05-12T01:43:16.7110333Z 18.04.5
	2021-05-12T01:43:16.7110775Z LTS

	arya@jrrr unison % stack exec unison -- -codebase c --old-codebase init
	Initializing a new codebase in: /Users/arya/unison/c
	arya@jrrr unison % stack exec unison -- -codebase c --old-codebase

	I've started a codebase API server at


	http://127.0.0.1:54494?eeMzm4cguksvi%2BbS3XADleeMUOmLTD64

	Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_4) AppleWebKit/537.36 (KHTML, like Gecko) Signal/1.33.4 Chrome/80.0.3987.163 Electron/8.2.1 Safari/537.36 node/12.13.0 env/production
	INFO 2020-05-21T16:57:39.374Z app ready
	INFO 2020-05-21T16:57:39.375Z starting version 1.33.4
	INFO 2020-05-21T16:57:39.399Z updateSchema:
	Current user_version: 20;
	Most recent db schema: 20;
	(deprecated) schema_version: 77;

	INFO 2020-05-21T16:57:39.778Z Initializing BrowserWindow config: {"show":true,"width":832,"height":550,"minWidth":680,"minHeight":550,"autoHideMenuBar":false,"backgroundColor":"#3a76f0","webPreferences":{"nodeIntegration":false,"nodeIntegrationInWorker":false,"contextIsolation":false,"preload":"/Applications/Signal.app/Contents/Resources/app.asar/preload.js","nativeWindowOpen":true,"spellcheck":true},"icon":"/Applications/Signal.app/Contents/Resources/app.asar/build/icons/png/512x512.png","x":0,"y":23}
	INFO 2020-05-21T16:57:39.978Z spellcheck: user locale: en-US

	2020-06-01 12:00:14.741795 [ThreadId 5] -




	haskell-lsp:Starting up server ...
	2020-06-01 12:00:14.750066 [ThreadId 5] - ---> {"jsonrpc":"2.0","id":0,"method":"initialize","params":{"processId":28616,"rootPath":"/Users/arya/unison/master/","rootUri":"file:///Users/arya/unison/master/","workspaceFolders":[],"capabilities":{"workspace":{"applyEdit":true,"configuration":false,"workspaceEdit":{"documentChanges":true},"workspaceFolders":false,"didChangeConfiguration":{"dynamicRegistration":false},"didChangeWatchedFiles":{"dynamicRegistration":false},"symbol":{"dynamicRegistration":false},"executeCommand":{"dynamicRegistration":false}},"textDocument":{"synchronization":{"dynamicRegistration":false,"willSave":true,"willSaveWaitUntil":true,"didSave":true},"completion":{"dynamicRegistration":false,"completionItem":{"snippetSupport":true,"commitCharactersSupport":false},"contextSupport":true},"hover":{"dynamicRegistration":false},"signatureHelp":{"dynamicRegistration":false},"references":{"dynamicRegistration":false