pass-by-reference

问题 I have a table view in which I can click an button icon and redirect to another page carrying the id of the row that has been clicked. @foreach ($patients as $patient) <tr> <td>{{ $patient->pID }}</td> <td>{{ $patient->pName }}</td> <td>{{ $patient->pAddress }}</td> <td>{{ $patient->pBday }}</td> <td>{{ $patient->pPhone}}</td> <td>{{ $patient->pEcon }}</td> <td>{{ $patient->pDreg }}</td> <td></td> <td> <a href="{{ URL::to('visit/'.$patient->pID) }}"> <img src="../images/viewvisit.png" style=

问题 I'm using a subroutine to make a few different hash maps. I'm currently passing the hashmap by reference, but this conflicts when doing it multiple times. Should I be passing the hash by value or passing the hash reference? use strict; use warnings; sub fromFile($){ local $/; local our %counts =(); my $string = <$_[0]>; open FILE, $string or die $!; my $contents = <FILE>; close FILE or die $!; my $pa = qr{ ( \pL {2} ) (?{ if(exists $counts{lc($^N)}){ $counts{lc($^N)} = $counts{lc($^N)} + 1; }

问题 I am having a hard time passing an array of strings to a function by reference. char* parameters[513]; Does this represent 513 strings? Here is how I initialized the first element: parameters[0] = "something"; Now, I need to pass 'parameters' to a function by reference so that the function can add more strings to it. How would the function header look and how would I use this variable inside the function? 回答1: You've already got it. #include <stdio.h> static void func(char *p[]) { p[0] =

问题 Consider the below example where I am attempting to pass-by-reference in the C way: // Function prototypes void increment(unsigned* number); int main() { unsigned* thing; increment(thing); cout << *thing; return 0; } void increment(unsigned* number) { number = (unsigned*) malloc(sizeof(unsigned)); *number = 1; } I get a program crash at the line cout << *thing . Yes, I am using C++ here but I wanted to try out the C version of pass-by-reference because my main project is in C. I fixed it by

问题 I would like my class to be: class NumberedString : public Object { public: String newName; short nameID; NumberedString(String &newName, short nameID) : newName(newName), nameID(nameID) {} }; HashMap uniqueStrs;//For later. An instantiation of this will be passed to a HashMap which takes over ownership of its the heap allocation: In HashMap.h (say): virtual result Add(const Object& key, const Object& value); Now this is where I get confused. I was allocating the String in the line that

问题 I am trying to make a global Reset class which reset all the values in a form and called the initial Method of that form. I pass the Form Name dynamically to Reset class and reset all the control's value and called the Method of that form. Here is my Code... Reset Class class Reset { public void BlankAll(string FormName, Panel pnl, string UserName) { foreach (Control ch in pnl.Controls) // this foreach loop reset the values of each control, it's working fine. So don't bother about it. { if

问题 Currently I have a GUI that has options for the user to select on how the program should run: //Inside GUI.java, start button has clicked -> send all objects to Main class private void startButtonClicked(MouseEvent e) { Main.setMain(selectedObj.getItemAt(selectedObj.getSelectedIndex())); Main.setOwnCar(userName.getText().trim()); Main.enableNaps(weSleep.isSelected()); Main.useOwnHouse(useOwnHouse.isSelected()); if (weSleep.isSelected()) { Integer minSleep = (Integer) minVal.getValue();

问题 Could there be any problem with passing const & as an argument to a function? Recently we have rewritten all occurrences of an object passing by value to pass by reference & or by const & when applicable. There were no compiler errors. The application is a windows service and its unable to start. We don't have a debug version and so I am here to ask. 回答1: So, one way your application behavior could have changed is: if you blindly pass something by & that was previously passed by value, modify

问题 Context: A card game; I want to deal out cards from a deck to each player in the game, in a clean way. This is what I had in mind: public static CardGame.IGame DealAll(this CardGame.IGame objThis, CardGame.Card[] cards) { if (objThis.Players.Length > 0) { for (int i = 0; i < cards.Length; i++) { objThis.Deck.MoveTo(cards[i], objThis.CurrentPlayer.Hand); objThis.AdvancePlayer(); } } return objThis; } public static Card[] MoveTo(this Card[] objThis, Card card, Card[] cards) { List<Card>

问题 My code is to allocate and initialize the array as follows ( floatalloc2 is a function used to allocate the 2D array): #include <stdio.h> #include <stdlib.h> void alloc_arr(int adjwfd, int nx, int nz, float **G, float **L1, float **L2) { G = floatalloc2(nx, nz); switch (adjwfd){ case 1: L1 = floatalloc2(nx, nz); break; case 2: L2 = floatalloc2(nx, nz); break; } } void init_arr(int adjwfd, int nx, int nz, float **G, float **L1, float **L2) { memset(G[0],0,nx*nz*sizeof(float)); switch (adjwfd){