Day 12.

NekitCorp · NekitCorp · commit bd423da91cc5 · 2024-12-12T18:05:58.000+03:00
diff --git a/2024/day-12.ts b/2024/day-12.ts
@@ -23,6 +23,8 @@ import { Expect, Equal } from "../test";
  *
  * Help 🎩Bernard before 🎅Santa continues his violent tirade.
  *
+ * Help 🎩Bernard before 🎅Santa continues his violent tirade. He's not about to spend a bunch of time looking at each child so instead he's just deciding whether a child is naughty or nice based on the number of characters in their name!
+ *
  * A HUGE hint
  *
  * Part of the fun/trick of this challenge is that you can't solve it normally by iterating because you'll get:
@@ -84,14 +86,14 @@ type NaughtyOrNice = {
 };
 
 type FormatNames<T extends string[][]> = {
-    [I in keyof T]: T[I] extends [infer Name extends string, infer Rating extends string, infer Count extends string]
+    [K in keyof T]: T[K] extends [infer Name extends string, string, infer Count extends string]
         ? {
               name: Name;
               count: Count extends `${infer CountNum extends number}` ? CountNum : never;
               rating: NaughtyOrNice[Name & keyof NaughtyOrNice];
           }
         : never;
-} & { length: T["length"] };
+};
 
 // *************************************************************************************
 // ***                                    Tests                                      ***

Original file line number	Diff line number	Diff line change
`@@ -23,6 +23,8 @@ import { Expect, Equal } from "../test";`
`23`	`23`	`*`
`24`	`24`	`* Help 🎩Bernard before 🎅Santa continues his violent tirade.`
`25`	`25`	`*`
	`26`	`+ * Help 🎩Bernard before 🎅Santa continues his violent tirade. He's not about to spend a bunch of time looking at each child so instead he's just deciding whether a child is naughty or nice based on the number of characters in their name!`
	`27`	`+ *`
`26`	`28`	`* A HUGE hint`
`27`	`29`	`*`
`28`	`30`	`* Part of the fun/trick of this challenge is that you can't solve it normally by iterating because you'll get:`
`@@ -84,14 +86,14 @@ type NaughtyOrNice = {`
`84`	`86`	`};`
`85`	`87`
`86`	`88`	`type FormatNames<T extends string[][]> = {`
`87`		`- [I in keyof T]: T[I] extends [infer Name extends string, infer Rating extends string, infer Count extends string]`
	`89`	`+ [K in keyof T]: T[K] extends [infer Name extends string, string, infer Count extends string]`
`88`	`90`	`? {`
`89`	`91`	`name: Name;`
`90`	`92`	count: Count extends `${infer CountNum extends number}` ? CountNum : never;
`91`	`93`	`rating: NaughtyOrNice[Name & keyof NaughtyOrNice];`
`92`	`94`	`}`
`93`	`95`	`: never;`
`94`		`-} & { length: T["length"] };`
	`96`	`+};`
`95`	`97`
`96`	`98`	`// *************************************************************************************`
`97`	`99`	`// * Tests *`