Argument-passing may refer to two different things: (1) the process of providing a program being started with some initial pieces of information (the arguments) on its command line; (2) the process of providing the initial values (the arguments) for the parameters of a function when it is called.
Questions tagged [argument-passing]
777 questions
3
votes
3 answers
Executing a command from C++, What is expected in argv[0]?
I am using execv() to run commands from /bin/ such as 'ls', 'pwd', 'echo' from my c++ program, and I am wondering what value I should provide in argv[0];
const char * path = getPath();
char ** argv = getArgs();
execv(path,argv);
Tom Neyland
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2 answers
Passing arguments to filters - best practices
What better ways to pass arguments to filters in Rails controllers?
EDIT: The filter has a different behavior depending on the parameters passed to it, or depends on the parameters to perform its action.
I have an example in my app, where a filter…
nanda
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4 answers
How do I print out which arguments a Python function requires/allows?
Suppose I have a function and I want to print out the arguments it accepts. How can I do this?
TIMEX
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How do I set preschedule=FALSE for llply's parallel mode?
I want to use llply to perform some parallel computations using the multicore doParallel backend (i.e. doParallel::registerDoParallel(cores=8)), but each computation will take a different amount of time, so I want to set the multicore preschedule…
Ryan C. Thompson
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2 answers
Open application and pass arguments from hyper-link in email
This is all done internally with trusted/full access.
How can I open my application from a hyper-link in an email and pass arguments?
I understand I can set up a file/link type association (although I'm unsure how to do this programmatically or…
GJKH
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3
votes
1 answer
How to handle Laravel 4 sub-domain route with controller, passing subdomain as an argument
Following the Laravel 4 documentation on Routing, I've been trying to create a domain route that will handle a wildcard subdomain and pass it over to a controller action, but I'm having trouble passing the argument.
Route::group(array('domain' =>…
Lazar Vuckovic
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votes
2 answers
How to pass multiple arguments to a smarty function?
I've a following code snippet from smarty template:
{pagination_link_01 values=$pagination_links}
The following is the function body:
user2838698
3
votes
3 answers
When to use reference in C++?
I am always in a doubt on when I should reference and when I should use a variable pass.
For example, one of the API is called by the JOBJECTs -
QLIST retrive_cinemas(QString& options)
{
return (staticobject::getcinemas(options));
}
or
QLIST…
dexterous
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3
votes
4 answers
Moving arguments or passing them the usual C++98/03 way?
Suppose that there is a Person class like this:
// "string" is std::string, "move" is std::move
class Person
{
public:
// C++11 way: pass by value and std::move() from the value
Person(string name, string surname)
:…
Mr.C64
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2 answers
C# - Method For Determining If Arguments Have Been Passed Fails
I am creating a Windows Forms Application with c# that can open up a file on startup if it is passed an argument containing the path to the file.
However, it doesn't accurately determine if arguments have been passed. Even when I pass no arguments,…
Igor
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3
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2 answers
How do I pass an array of functions as argument if size of array isn't known
Here's a simple (and a silly one, yeah) example of what I'm trying to do:
#include
void callFunctionsFromAnArray(void *(*)(int), int);
void f1(int);
void f2(int);
void f3(int);
int main()
{
const int n = 3;
void (*functions[n])…
Anhil
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votes
2 answers
How to use the content of the kill-ring as the prefix-arg for universal-argument?
Sometimes I want to be able to do the following:
"C-u xxx ..."
where xxx is the integer which I did last put into the kill-ring (by killing a number in my buffer).
It's something I'd like to use with a macro so I can't enter that integer…
Cedric Martin
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4 answers
How to pass arguments to REXX program through JCL
Can we pass arguments to a REXX program from JCL?
I suppose, JCL PARM can be used as we use for passing arguments to COBOL programs.. Do put your ideas here...
Raja Reddy
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3 answers
How do I globally change a variable value within function in lisp
I would like to know if there is any way to mimic C behaviour with pointers in LISP. In C if you change a value of a variable, that pointer is pointing to, it has a global effect (i.e. the value will be changed outside the function too).
So if I had…
smihael
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votes
1 answer
error: invalid initialization of non-const reference of type 'cv::Mat&'
The below is my function prototype.
void devectorize(Mat &vec,Mat mask,Mat& img);
I am getting the below error when I try to call this function in my code. What would be the reason?
Mat V;
for(int i=0;i
user2727765
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