Recent questions tagged Pointers

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pointers - Types of Go struct methods that satisfy an interface

Given the following Go code example: package main import "fmt" type greeter interface { hello() goodbye() ... enough for the interface greeter? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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pointers - Memory leak in golang slice

I just started learning go, while going through slice tricks, couple of points are very confusing. can any ... objects outside backing array. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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pointers - Nim: Addresses of parameters and mutability

I'm trying to make up my mind about Nim's policy behind expression has no address. In particular, I have a C ... denied in this case as well? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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pointers - C++ Polymorphism and Vectors, pointing a derived class of vectors to a base class of vectors

Say: Apple is derived from a base Fruit Class, then there is a class ApplePicker derived from a base ... pointers like vector<Fruit*>. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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pointers - Copy to global memory allocated by malloc()?

CUDA programming guide states that "Memory allocated via malloc() can be copied using the runtime (i.e., by ... -memory in host-side functions? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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pointers - C++ - *p vs &p vs p

I am still struggling to understand the difference between *p, &p, and p. From my understanding, * can be ... of something, just like *p? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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pointers - C Code for String matching[Head First C] doesn't seem to work

#include <stdio.h> #include <string.h> char tracks[][80] = { "I left my heart in Harvard Med School", " ... basic code so it will do. Thanks See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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pointers - How to compare 2 functions in Go?

For example I have list of functions that I want to compare: http://play.golang.org/p/_rCys6rynf type Action ... if two functions are the same? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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pointers - What happens to an address after delete operator has been applied to it in C++?

If I delete a pointer as follows for example: delete myPointer; And, after that did not assign 0 to the ... pointing to another memory address? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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pointers - C++ : Meaning of const char*const*

In one of the C++ programs, I saw a function prototype : int Classifier::command(int argc, const char*const* ... ** argv also mean the same? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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776 views

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pointers - Swift convert string to UnsafeMutablePointer<Int8>

I have a C function mapped to Swift defined as: func swe_set_eph_path(path: UnsafeMutablePointer<Int8>) -> ... work anymore. Any suggestions? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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pointers - What is the difference between reflect.ValueOf() and Value.Elem() in go?

I started learning golang a couple of days ago and found reflect.Valueof() and Value.Elem() quite confusing. What ... .Set(val) return nil } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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659 views

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pointers - Addresses of slices of empty structs

I have a basic question on empty structs and am trying to get my head around the following different outputs I am ... ==> [depends upon env] See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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538 views

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pointers - What does => (equals greater than) mean in Fortran?

I'm looking through some old Fortran 90 code and have come across the => symbol: var => item It looks ... " gives me no related material. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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725 views

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pointers - C++ object equality

I have a class MyCloth and one one object instance of that class that I instantiated like this: MyCloth** cloth1; And ... so, how do I do that? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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594 views

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pointers - C++ object equality

I have a class MyCloth and one one object instance of that class that I instantiated like this: MyCloth** cloth1; And ... so, how do I do that? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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583 views

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pointers - C++ object equality

I have a class MyCloth and one one object instance of that class that I instantiated like this: MyCloth** cloth1; And ... so, how do I do that? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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548 views

1 answer

pointers - C++ object equality

I have a class MyCloth and one one object instance of that class that I instantiated like this: MyCloth** cloth1; And ... so, how do I do that? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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680 views

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pointers - C - initialize array of structs

I am having a problem initializing an array of structs. I'm not sure if I am doing it right because ... arrayIndex] = newStudent; arrayIndex++; See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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551 views

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pointers - Roll Your Own Linked List/Tree in R?

I'm trying to wrap my head around the basic concepts of the R programming language and am finding it ... the interpreter defeats the purpose. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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734 views

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pointers - dword ptr usage confusion

In assembly language if we use mov eax, dword ptr[ebx] then it means copy the value pointed by ebx (ebx contains ... [edx] } } #endif // WIN32 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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714 views

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pointers - rewinding stdin in a bash script

Is there a simple way to "rewind" /dev/stdin inside my bash script which already read all or some portion from ... as unread in the mailbox). See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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520 views

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pointers - What is the proper way to return an object from a C++ function?

I am confused between : returning an object (but then the object is copied from the local variable in the function, ... to be done. Thank you See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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738 views

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pointers - Does dereferencing a struct return a new copy of struct?

Why when we reference struct using (*structObj) does Go seem to return a new copy of structObj rather ... when dereference again Go playground See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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671 views

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pointers - What is forward reference in C?

What is forward reference in C with respect to pointers? Can I get an example? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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607 views

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pointers - Can someone please explain to me (in very simple terms) what the difference between the esp, ebp, and esi register is?

I've got to learn assembly and I'm very confused as to what the different registers do/point to. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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707 views

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pointers - C++: how to cast 2 bytes in an array to an unsigned short

I have been working on a legacy C++ application and am definitely outside of my comfort-zone (a ... <unsigned_short>(packetBuffer[1]) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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pointers - C++ initial value of reference to non-const must be an lvalue

I'm trying to send value into function using reference pointer but it gave me a completely non-obvious error to me ... fix that code? thanks :) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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