parameter-passing

问题 I'm trying to clean up code by stripping parameters from a function within a private scope, like this: Function complicatedFunction(x as Double, param1 as Double, param2 as Double) ... End Function Function mainActionHappensHere(L as Double, U as Double ...) Function cleaner(x) cleaner = complicatedFunction(x, L, U) End Function ... cleaner(x) 'Many calls to this function ... End Function Is this possible? Compiler complains, "Expected End Function", since I'm beginning a function before

问题 I did a basic helloWorld system call example that had no parameters and was just: int main() { syscall(__NR_helloWorld); return 0; } But now I am trying to figure out how to pass actual arguments to the system call (ie. a long ). What is the format exactly, I tried: int main() { long input = 1; long result = syscall(__NR_someSysCall, long input, long); return 0; } Where it takes a long and returns a long , but it is not compiling correctly; what is the correct syntax? 回答1: Remove the type

问题 void swap(int &first, int &second){ int temp = first; first = second; second = temp; } ////// int a=3,b=2; swap(a,b); In the above example, the C compiler complaints that "void swap(int &first, int &second)" has a syntax error like missing "&" before "( / {". I don't understand why? Doesn't C support this feature? 回答1: C doesn't support passing by reference. So you will need to use pointers to do what you are trying to achieve: void swap(int *first, int *second){ int temp = *first; *first =

问题 void swap(int &first, int &second){ int temp = first; first = second; second = temp; } ////// int a=3,b=2; swap(a,b); In the above example, the C compiler complaints that "void swap(int &first, int &second)" has a syntax error like missing "&" before "( / {". I don't understand why? Doesn't C support this feature? 回答1: C doesn't support passing by reference. So you will need to use pointers to do what you are trying to achieve: void swap(int *first, int *second){ int temp = *first; *first =

问题 How can parameters/settings be passed to a Scala macro? These settings should not be global, but per macro invocation. What I would like to have is something similar to this: def a(param: Int) = macro internalMacro("setting 1") def b(param: Int) = macro internalMacro("setting 2") whereas setting 1 and setting 2 should then be constant values, accessible from within the macro, so I can make the internal behavior dependent on them. 回答1: The parameter lists of your method and the macro

问题 I have a JSP file that includes another JSP file. The first JSP should pass an instance of a Java class (widget) to the second JSP file. This is what I have: The first JSP: <jsp:include page="/container/SpecialWidget.jsp"> <jsp:param name="widget" value="${widget}"/> // widget is a .Java POJO </jsp:include> The second JSP: ${param.widget.id} The problem is that this code gives an error (it says it doesn't know ID). If I omit the ".id" part, the page prints the Java code for the Java class,

问题 I have a JSP file that includes another JSP file. The first JSP should pass an instance of a Java class (widget) to the second JSP file. This is what I have: The first JSP: <jsp:include page="/container/SpecialWidget.jsp"> <jsp:param name="widget" value="${widget}"/> // widget is a .Java POJO </jsp:include> The second JSP: ${param.widget.id} The problem is that this code gives an error (it says it doesn't know ID). If I omit the ".id" part, the page prints the Java code for the Java class,

问题 I was answering these two questions and got an adequate solution, but I had trouble passing arguments using fuzzy_join into the match_fun that I extracted from fuzzyjoin::stringdist_join . In this case, I'm using a mix of multiple match_fun's, including this customized match_fun_stringdist and also == and <= for exact and criteria matching. The error message I'm getting is: # Error in mf(rep(u_x, n_y), rep(u_y, each = n_x), ...): object 'ignore_case' not found # Data: library(data.table,

问题 I am wondering how to pass an array or a list from one .jsp page to another. I want to then take the values from this array and assign them to a javascript array. I think I have the source jsp page configured correctly, but was wondering how to get the values in the second .jsp page. This is my source .jsp file: <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> <title>Firstjsp</title> </head> <body> <Form Method = "Post" Action = "Mapper.jsp"> <% String

问题 Although I manage to send the grid's selected row id to the controller, the url for opening action view cannot be built up (it is created /Controller/Action instead of /Controller/Action/ id . So, when I try to open the view with /Controller/Action/ id it is open, but it cannot be opened by button click as below. View: <input type="button" id="btn" name="name" value="send to Server!" /> <script> $('#btn').click(function () { var items = {}; var grid = $('#Grid').data('kendoGrid'); var