I saw the following viewpoint on the React TypeScript Cheatsheet website: "An empty interface, {} and Object all represent "any non-nullish value"—not "an empty object" as you might think." For example: let value: {}; value = 1; value = "foo";…
I am learning TS and have the following code: function getOrDefault<T = string>(value: T, defaultValue: T, car: T): T { return value || defaultValue; } const strValue = getOrDefault("Hello", "Default", "o"); const numValue = getOrDefault(undefined, 42, "o"); The TS Playground…
const componentMapper = { input: InputComponent, button: ButtonComponent, select: SelectComponent, date: DateComponent, radiobutton: RadiobuttonComponent, checkbox: CheckboxComponent, switch: SwitchComponent, textarea: TextAreaComponent }; const compFactory = this.resolver.resolveComponentFactory(componentMapper[this.field.type]); What is strict type for const compFactory
I use the EAV (Entity-Attribute-Value) pattern in an inventory management system I'm developing. It's very comparable to a typical webshop framework like Magento. Attributes have a data type, like numeric, varchar, text. The attribute definitions are stored in one table…
Problem I am finding that JSDoc works well with intellisense and type checking when the JSDoc-typed code is "inside" the project; however, including a JSDoc-typed library via a script tag (<script src="mylibrary.js">) does NOT provide any intellisense, type checking, or…
I'm trying to import a tabel from a CSV file. The table has two columns whose values are "$##,##". When I try to import I get an error. the error I've already tried using Numeric, Double Precision and Money my…
I have this array of Projects where stack has multiple strings const projects: IProject[] = [ {name: '', description: '', stack: {'php', 'sql'}} ] How will the interface be or what is the best approach? interface IProject { name: string…
I want to check if the obj object variable has all the properties of the Person interface. interface Person { name: string; age: number; } const jsonObj = `{ name: "John Doe", age: 30, }`; const obj: Person = JSON.parse(jsonObj);…
I am working in python and have a code that receives s3 event notifications via an SQS. I'm trying to find existing type support (for type hints and parsing using pydantic) for events such as s3:ObjectCreated - I would assume…
PostgreSQL has SETOF <sometype> type according to the doc and SETOF <sometype> type is used in a function as shown below: -- ↓ ↓ ↓ Here ↓ ↓ ↓ CREATE FUNCTION my_func() RETURNS SETOF <sometype> ... Now, I want to…