Category "struct"

Pyspark create schema for maptype with different value types

I need to give the correct schema to an rdd I have, but struggling with a maptype that has different valuetypes. I guess the problem is that one specific Key ha

Returning dynamic memory inside a struct in C

Hi I have the following struct typedef struct mystruct_s { int* array; } mystruct; and I want to create a function that initializes it. I have two ways of

struct in union nested - understanding behaviour of type punning

The following code uses a structure inside a union inside a structure inside a union. #include <cstdio> union { char abcd[4]; struct {

Solidity mapping not returns an array in a struct

The Solidity's mapping not returns an array inside a struct (when call mapping_data(), the data variable is undefined). Just be able to read it from read() func

How to initialize a struct to 0 in C++

Here is a related C answer that doesn't work (as a zero initializer for a struct) in C++: Initializing a struct to 0. One of the solutions presented is this: my

Cannot Read struct with string from PLC using s7netplus c#

im trying to read this data block from Siemens S1500 PLC using s7netplus libary and my mapped code struct looks like this public struct testStruct {

How to use dynamic 2d array inside a struct array in C?

What do I want to do? I'm working on a project on dynamic matrix multiplication. I want to input from the user that on how many matrices, he/she wants to perfor

Struct padding rules in Rust

Recently when I was learning Type Layout in Rust, I saw that struct in Rust supports the #[repr(C)] directive, so I want to to see the difference between the de

How can I declare a Pointer to a struct in C?

I have learned that pointers can be declared in 3 different ways: int* a; int *b; int * c; I prefer: int* a; While declaring a pointer to a structure, is it c

How to create structs in Golang from other partial structs?

If I have a two different structs, that mostly overlap each other in regards to their property types, and I need to create one from the other, is there some mor

Getting Go to recognize when new line is added to a TOML config file

I am trying to create a simple cli tool in Go using a TOML config file. I want to be able to store frequent commands I use on the command line for other tools,

How can I initialize View Again in SwiftUI?

I’m using SwfitUI in my project and I have a NavigationView and List. I’m clicking cell after open the detail view and click navigation back button.

Interesting C macro, how is it able to take a field within a struct and return a reference to the struct?

I saw an interesting design for a doubly-linked-list inside the Pintos operating system and I don't quite understand how it was able to achieve this behavior. I

Dodging the performance hit from using `in` with a struct without making the struct readonly?

C# 7.2 added two new features: In Parameters Using in for a parameter let's us pass by reference, but then prevents us from assigning a value to it. However the

Setting a pointer to a specific array and/or struct element

Here is the scenario: I have an array, AllElements of structure ElementSet, and inside of that structure - is a set of myElement structures and also an array of

Marshaling complex C structs with c unions for C#

i am desperate to get a complex c datatype correctly marshaled for C#. I already read all the other posts regarding that topic and i am running out of ideas alt

Unable to refer to typedef struct definitions done in Win32 Header files (.h files in External dependencies) from WinRT C++ Library

Unable to refer to typedef struct definitions done in Win32 Header files (.h files in External dependencies) when consumed from WinRT C++ Library #include <m

How do you declare a stack of type struct? in c++

In the code below, how do you properly declare a stack of type struct and push strings onto the stack so that they are saved in the struct? How do you specify w

Parts of a structure in C++ [closed]

Here is a code of a structure. On that there is a BSTree function included on the structure. I am stuck because I do not understand how a func

How do I construct an object of a slice struct?

package main import ( "fmt" ) type demo []struct { Text string Type string } func main() { d := demo{ Text: "Hello", Type: