Advertisements In the postgresql documentation related to date/time types. It is stated that the type time can have a max value of 24:00:00. Can someone could explain to me the purpose of settings this value to this instead of 23:59:59 ? There’s maybe a reason for this but i just don’t get it. https://www.postgresql.org/docs/current/datatype-datetime.html >Solution… Read More Postgresql max time value

Advertisements In C#, is it possible to check if a variable is of a specific type that uses a generic, without knowing what that generic is? For example, the code using System; using System.Collections.Generic; public static class Program { public static void Main(string[] args) { List<string> list = new List<string>(); if (list is List<object>) Console.WriteLine("Success");… Read More Is it possible to type check using `is` without knowing the generic used in C#?

Advertisements If I have this code as follows, how do I make it so name has to be a string but also has a default of "person", something like what follows: function greet(name = "person": string) { console.log(`Hello ${name}!`); } greet("Bob"); //Should return "Hello Bob!" greet(1) //Should return error about having the wrong type greet()… Read More Is there a way to add a default while still keeping type restrictions in a function in TypeScript?

Advertisements I want return type of my method is one of my class’s properties (dynamically), how can i do this? Something like this: interface IObject { [key: string]: any } class classX<T extends IObject> { public methodX(column: keyof T) { return (null as any) as T[`${column}`] // T[‘property’] } } const varX = new classX<{… Read More How to use value in type syntax

Advertisements I have following function within a class, which gets real part of a complex number: double inputReal(){ double real; cout << "Enter real part: "; cin >> real; bool compare = typeid(real) == typeid(double); while (compare != true){ cout << "Incorrect input. Try another input: "; cin >> real; } return real; } It… Read More Can't compare types of variables in C++

Advertisements I want to sizeof of data types in for-cycle. I wrote function with macros that print sizeof of argument (argument is data type). I need to use struct with data-types-elements and indexing them. How can I realize it or how to work around this problem? Code: #define t_array = [ int, float ]; #define… Read More How to write array of data types in c

Advertisements I want to call a method like that: public function to(Address|string …$addresses) {} I can call it with $obj->to("my-address"). But, when I want to give a list of address, I’m using: $myList = [ "address-1", "address-2" ]; $obj->to($myList); But I get this error: must be of type Symfony\Component\Mime\Address|string, array given Even if it’s with… Read More How to use array as … type?

Advertisements Both cppreference.com and cplusplus.com say it’s int_type. But they don’t explain (at least I couldn’t find it, an neither could Bing Chat) what type it is. (I suppose it can be any signed integer type at least as wide as char and bool.) >Solution : The special value EOF needs to be of integer… Read More What type does eof return?

Advertisements I am trying to remove commas from number which has been entered as a string and change it’s data type to integer for analysis purposes 0 1,741,147 1 1,755 2 95,532 3 216,022 4 208,134 Above is the Pandas series(‘Active Cases’) that I am working with whose data type is Object. I want to… Read More Changing datatype and removing commas from a number

Advertisements I am facing some issues with Typescript? Suppose I have two interfaces defined, the second interface will use the first one as a type for its optional property of "link" interface Link { href: string; text: string; } interface Container { id: number; link?: Link; } That is how I have it set up,… Read More Question about Typescript optional objects in interface