- No mutable state
- no loops (for, while)
- no statements
- no mouse
- no primitives
- no else (only guards)
- no conditionals
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public class VersionTest | |
{ | |
private readonly ITestOutputHelper _outp; | |
public VersionTest(ITestOutputHelper outp) | |
{ | |
_outp = outp; | |
} | |
[Fact] |
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f = 1: 1: zipWith (+) f (tail f) |
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internal interface Either<L, R> | |
{ | |
Either<L, B> Bind<B>(Func<R, Either<L, B>> f); | |
B Match<B>(Func<L, B> whenLeft, Func<R, B> whenRight); | |
} | |
internal sealed record Right<L, R> : Either<L, R> | |
{ |
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(defun my-dired--first-char-or-ask () | |
(if (member (char-after (line-beginning-position)) `(?\s ,dired-marker-char)) | |
(read-char "Which mark are you targeting? ") | |
(char-after (line-beginning-position)))) | |
(defun my-dired-swap-marks-ask () | |
(interactive) | |
(let ((mark (my-dired--first-char-or-ask))) | |
(my-dired-swap-marks (string mark)))) |
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content | |
.lines() | |
.filter(|line| line.to_lowercase().as_str().contains(query)) | |
.collect() | |
content | |
.lines() | |
.map(|line| line.to_lowercase().as_str()) | |
.filter(|line| line.contains(query)) | |
.collect() |
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module Main where | |
type Point = Int | |
type From = Point | |
type To = Point | |
type Segment = (From, To) | |
type Graph = [Segment] | |
hasPath :: Graph -> From -> To -> Bool | |
hasPath [] _ _ = False |
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private delegate IEnumerable<string> ManipulateHistory(IEnumerable<string> history); | |
ManipulateHistory append(string tail) => | |
history => history.Append(new[] { history.Last() + tail }); | |
ManipulateHistory delete(int k) => | |
history => history.Append(new[] { delete(history.Last(), k) }); | |
string delete(string last, int k) => last.Substring(0, last.Length - k); |
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test | |
"repeated characters are replaced with one" | |
{ | |
let randomlyRepeat char = | |
gen { | |
let! randomLength = Arb.generate<int> |> Gen.map (fun i -> abs i + 1) | |
return String(char, randomLength) | |
} | |
let arbitrarilyRepeatCharactersInString s = |
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