🕶️

J. Pichardo jpitchardu

🕶️

Another hacker doing hacky stuff AKA Software Engineer

jpitchardu / test.go

Last active May 6, 2024 03:28

Go Result type

	func ConnectToDB() result.Result[sql.DB] {
	psqlInfo := fmt.Sprintf("host=%s port=%s user=%s password=%s dbname=%s sslmode=disable", host, port, user, password, dbname)

	return result.NewResult(sql.Open("postgres", psqlInfo)).Try(func(db *sql.DB) error {
	return db.Ping()
	}).IfOk(func() {
	fmt.Println("Successfully connected to database!")
	})
	}

jpitchardu / optional-chaining.js

Created May 23, 2018 16:42

TC39 Optional Chaining Proposal

obj?.arrayProp?[0]?.someProp?.someFunc?.();

jpitchardu / optional.js

Created May 23, 2018 16:40

Optional functionality in js using proxies

	function optional(obj, evalFunc, def) {
	const handler = {
	get: function(target, prop, receiver) {
	const res = Reflect.get(...arguments);
	return typeof res === "object" ? proxify(res) : res != null ? res : def;
	}
	};
	const proxify = target => {
	return new Proxy(target, handler);
	};

jpitchardu / lodash-get.js

Created May 23, 2018 16:38

lodashJS._get example

	var object = { 'a': [{ 'b': { 'c': 3 } }] };

	_.get(object, 'a[0].b.c'); // => 3

	_.get(object, ['a', '0', 'b', 'c']); // => 3

	_.get(object, 'a.b.c', 'default'); // => 'default'

jpitchardu / optional-regex.js

Created May 23, 2018 16:37

Null-safe with regex in javascript

	function optionalAccess(obj, path, def) {
	const propNames = path.replace(/\]\|\)/, "").split(/\.\|\[\|\(/);
	return propNames.reduce((acc, prop) => acc[prop] \|\| def, obj);
	}

	const obj = {
	items: [
	{ hello: "Hello" }
	]
	};

jpitchardu / optional-regex.js

Created May 23, 2018 16:37

Null-safe with regex in javascript

	function optionalAccess(obj, path, def) {
	const propNames = path.replace(/\]\|\)/, "").split(/\.\|\[\|\(/);
	return propNames.reduce((acc, prop) => acc[prop] \|\| def, obj);
	}

	const obj = {
	items: [
	{ hello: "Hello" }
	]
	};

jpitchardu / deep-null.js

Created May 23, 2018 16:32

Deep null-check in javascript

console.log( obj && obj.prop1 && obj.prop1.prop2 && obj.prop1.prop2.prop3 ); // => undefined

jpitchardu / null-condition.js

Created May 23, 2018 16:31

Null-Conditional in JS

	let obj;

	console.log(obj && obj.someProp); // Prints undefined

jpitchardu / type-error.js

Created May 23, 2018 16:31

Type Error in JS

	let obj;
	console.log(obj.someProp); // => TypeError: Cannot read property 'someProp' of undefined

	obj = null;
	console.log(obj.someProp); // => TypeError: Cannot read property 'someProp' of null

jpitchardu / null-coalescence.cs

Created May 23, 2018 16:29

Null Coalescence in C#

	SomeClass obj;

	obj?.prop1?.prop2?.prop3 ?? "SomeDefaultValue";