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@gimenete
gimenete / safeParse.ts
Last active March 15, 2024 16:05
A wrapper around the fetch function that validates the response body against a Zod schema
import z from "zod";
export async function safeFetch<T>(
schema: z.Schema<T>,
input: RequestInfo,
init?: RequestInit
): Promise<T> {
const response = await fetch(input, init);
if (!response.ok) {
@kconner
kconner / macOS Internals.md
Last active June 27, 2024 18:48
macOS Internals

macOS Internals

Understand your Mac and iPhone more deeply by tracing the evolution of Mac OS X from prelease to Swift. John Siracusa delivers the details.

Starting Points

How to use this gist

You've got two main options:

Frameworks like React require that when you change the contents of an array or object you change its reference. Or push another way that you don't change arrays but instead create new arrays with updated values (i.e. immutability).

There are older array methods that are incompatible with immutability because they alter the array in place and don't change the array reference. These are mutable (or destructive) methods.

Shown below are replacements for the array destructive methods (e.g. push, pop, splice, sort, etc.) that will create new array references with the updated data.

Solutions are provided using the spread operator and also the newer "change array by copy" methods (toSpliced, toSorted, toReversed and with).

Setting Value At Index