Category "types"

Typescript reduce return wrong Type and also forbid to assert it

Faced very strange ts behaviour. type Labels = Record<string, boolean | undefined> type LabelGroups = Record<string, Labels> export function reduc

Which C/C++ data type should I use for PHI(N) calculator?

I found a source code online for calculating PHI. I made some small adjustments to the variable types, such as using an unsigned long int, however I am limited

How to capture Typescript conditional property type

I have the following Typescript type: type Config = { key: string, type: `input` | `switch` | `radios` | `select` | `checklist` | `image`, options: string

Destructure a function parameter in Typescript

I'm trying to give a type to the members of below function. args is an object with a data property of type UserCreateInput So, from this: createUser(parent: a

How to create a generic buffer in TypeScript?

I have the following class: export class BufferData { arr: Float32Array; index: number; constructor() { this.arr = new Float32Array(8); this.inde

It Is possibile to map typescript object to another based on interface/or type [duplicate]

If i have an object in typescript const x = {a:1, b:2} And an interfacce interface MyInterface { a: number } It possibile to do something li

VHDL: Are enumerations in multiple type declarations named the same treated as the same value?

See the following simplified code example. The reason for trying to do this is do to reporting on missing FSM transitions to ST1 in return_to_states when retur

How can you define a function who's return type depends on the value of its parameter?

Let's say I want to define a function called zero that takes a string like "f" or "i" and returns the zero value for either float or int. So we could do somethi

How to check if enum type?

How can I tell if a variable is of type enum? I have installed PHP 8.1 on my Ubuntu 20.04. I'm testing the new "enum" types. Is something like that possible? is

Dependent Disjoint Unions in Typescript

Given a simple Record<string, Record<string, any>> defined as a constant record of possible named configurations, I want a type which dynamically re

How do I find Hash type If I know INPUT an OUTPUT

I have an encrypted hash and I don't know the HASH TYPE. I have 2 alternatives, one of them is surely correct (matches INPUT with OUTPUT). How can I find the ha

How do I check that a number is float or integer?

How to find that a number is float or integer? 1.25 --> float 1 --> integer 0 --> integer 0.25 --> float

Why can one column of the pandas DataFrame not be filled?

I'm having some problems iteratively filling a pandas DataFrame with two different types of values. As a simple example, please consider the following initializ

TS Types for Google Calander API

So was experimenting with the Google Calendar API and working on it with TS. However, I can't seem to find a proper type for most of its functions. I do know th

TypeScript failes to infer return type of constrained generic function in some cases, why is this happening?

I have this code, which works just fine in a simple case, meaning the "permissionList" const is type inferred, VSCode can suggest me the properties, such as "pe

React Navigation V5 custom header + Typescript Error: custom property 'rightButtons' does not exist on type 'object' (router.params)

I create custom header: const header = ({ navigation, route, options, back }: NativeStackHeaderProps): React.ReactNode => { const buttons: HeaderRightBut

How to do structural pattern matching in Python 3.10 with a type to match?

I am trying to match a type in Python 3.10 using the console: t = 12.0 match type(t): case int: print("int") case float: print("float") And I get t

I am trying to create a react app with typescript but I keep getting failed to compile on start

I am trying to create a react app with --template typescript and I keep getting this error: ERROR in Plugin "react" was conflicted between "package.json »

Oracle PLSQL extend type with date abs timestamp

I have the following code, which seems to be working. Is there a way I can add a date, timestamp to the type definition? If so, how would reference the columns

Can I short-circuit type evaluation?

I'm trying to create a composable configuration framework wherein each node in the dependency graph can access all of its upstream nodes. Although I've managed