parameter-passing

问题 Is there any way at all for this code to compile and work as intended without resorting to va_list stuff ? #include <iostream> void fct(void) { std::cout << std::endl; } void fct(int index, int indexes...) { std::cout << index << ' '; fct(indexes); //or fct(indexes...); ? } int main(void) { fct(1, 2, 3, 4, 5, 6, 7); return 0; } 回答1: I suspect you have misunderstood the meaning of the signature void fct (int index, int indexes...) I suspect you think that fct() expect a int single value (

问题 Constantness class MyClass { // ... private: std::string m_parameter; // ... } Pass-by-value: void MyClass::SetParameter(std::string parameter) { m_parameter = parameter; } Pass-by-ref: void MyClass::SetParameter(std::string& parameter) { m_parameter = parameter; } Pass-by-const-ref: void MyClass::SetParameter(const std::string& parameter) { m_parameter = parameter; } Pass-by-const-value: void MyClass::SetParameter(const std::string parameter) { m_parameter = parameter; } Pass-by-universal

问题 I am new to CDI, tried to find solution for this question, but, couln't found any. Question is Suppose I have one class which is being injected(A) from, where some value(toPass) is getting injected, now I want to pass this same value(toPass) to class B, which is getting injected from class A. public class A { String toPass = "abcd"; // This value is not hardcoded @Inject private B b; } public class B { private String toPass; public B(String toPass) { toPass = toPass; } } Can anybody please

问题 I'm experiencing a weird behavior with GDB passing a string as the parameter to a constructor. The code works fine, but when I step through in the debugger, GDB seems to think my parameter is at a different address then it is. Does anyone know what's going on here? Here's the simplest program I can create that demonstrates the problem: --(jwcacces@neptune)--------------------------------------------(/home/jwcacces)-- --$ nl gdb_weird.cpp 1 #include <iostream> 2 #include <string> 3 4 class C 5

问题 This question already has answers here : Is Java “pass-by-reference” or “pass-by-value”? (86 answers) Closed 4 years ago . I do not understand why System.out.println(name) outputs Sam without being affected by the method's concat function, while System.out.println(names) outputs Sam4 as a result of the method's append method. Why is StringBuilder affected and not String? Normally, calling methods on a reference to an object affects the caller, so I do not understand why the String result

问题 Alright, I know this is a vague conceptual question, but I really need help here. Thanks in advance if you decide to take the time to read this. I would never even consider writing this much except this is such a great forum with so many helpful people I thought this would be the best place to ask. This is all related to the question here (you don't have to look at it - I explain everything below): Pass parameter when initializing table I've been working for days on the same problem, but I'm

问题 Alright, I know this is a vague conceptual question, but I really need help here. Thanks in advance if you decide to take the time to read this. I would never even consider writing this much except this is such a great forum with so many helpful people I thought this would be the best place to ask. This is all related to the question here (you don't have to look at it - I explain everything below): Pass parameter when initializing table I've been working for days on the same problem, but I'm

问题 When executing a Powershell script (in 2.0) using the -File command line switch, and explicitly defining the input parameters in Param, the exit code is always "0" (never fails) instead of properly returning the defined or expected error code. This does not occur when using the explicit parameter definitions and the -Command switch, however for extraneous purposes, I need to keep the -File switch in my scripts. Any assistance with a workaround (that doesn't involve removing the explicit

问题 I would like to be able to make a link to a page with a datatable which would pass a search parameter value in the url. The goal is to have the page with the datatable open pre-filtered with the search value parameter. I've set up a jsfiddle to work in with some sample data. http://jsfiddle.net/lbriquet/9CxYT/10/ The idea would be to add a parameter to the jsfiddle url so that the page would display with the search input value set to "firefox", for example, and the table filtered to show only

问题 I have written a python script which calls a function. This function takes 7 list as parameters inside the function, something like this: def WorkDetails(link, AllcurrValFound_bse, AllyearlyHLFound_bse, AlldaysHLFound_bse, AllvolumeFound_bse, AllprevCloseFound_bse, AllchangePercentFound_bse, AllmarketCapFound_bse): where all the arguments except link are lists. But this makes my code looks pretty ugly. I pass these lists to this function because the function appends few values in all of these