overloading

Implement Array-like behavior in JavaScript without using Array

由 ↘锁芯ラ 提交于 2019-12-03 18:28:09
问题 Is there any way to create an array-like object in JavaScript, without using the built-in array? I'm specifically concerned with behavior like this: var sup = new Array(5); //sup.length here is 0 sup[0] = 'z3ero'; //sup.length here is 1 sup[1] = 'o3ne'; //sup.length here is 2 sup[4] = 'f3our'; //sup.length here is 5 The particular behavior I'm looking at here is that sup.length changes without any methods being called. I understand from this question that the [] operator is overloaded in the

Java overload confusion

由 大城市里の小女人 提交于 2019-12-03 18:08:11
问题 java is not able to call any overload method as shown below :- class LspTest{ public void add(int a, float b){ System.out.println("First add"); } public void add(float a, int b){ System.out.println("second add"); } public static void main(String [] a){ LspTest test = new LspTest(); test.add(1,1); } } Please explain i am confused in this. 回答1: In your methods you are having parameters (int, float) and (float, int) but when calling the method you are passing both the int (1,1) values. The Java

Using a class member as a default argument for a member function

由 馋奶兔 提交于 2019-12-03 17:39:28
问题 Is there another way than manually overloading the corresponding member function and calling the first overload with the member as the argument? I am trying something along the lines of class test { string t1="test"; testfun( string& val = this->t1 ) { /* modify val somehow */ } }; (Test it: http://goo.gl/36p4CF) Currently I guess there is no technical reason why this should not work. Is there a solution doing it this way except overloading and setting the parameter manually? Why is this not

Grouping overloads in doxygen

由 风流意气都作罢 提交于 2019-12-03 17:11:36
问题 In my library I have a lot of function overloads of the form: /// \brief Does thing. /// /// \details The thing that is done is very special. template<typename T> void do_stuff(const T& t); /// \brief Does thing repeatedly. /// \copydetails do_stuff() template<typename T> void do_stuff(const T& t, std::size_t x); This, in general, works and is quite nice but creates the same documentation section multiple times. What I want is, to group those functions together. Have on detail description and

Java overloading - long and float

由 瘦欲@ 提交于 2019-12-03 15:13:18
问题 I was trying to understand java overloading rules. Everything seems fine except following, public static void main(String[] args) { long aLong = 123L; foo(aLong); } private static void foo(double aDouble) { System.out.println("Foo aDouble"); } private static void foo(Long aWrapperLong) { System.out.println("Foo Wrapper Long"); } private static void foo(int anInt) { System.out.println("Foo Int"); } private static void foo(float aFloat) { System.out.println("Foo Float"); } Why does the call

possible to overload function in matlab class?

由 痴心易碎 提交于 2019-12-03 15:10:31
Is it possible to overload a function in a Matlab class that you've created? Like the following: function [ sigma_nc ] = sustained_interference( N ) sustained_interference( N, N.center_freq); end function [ sigma_nc ] = sustained_interference( N, center_freq ) ... end Unfortunately when I try this, I get a redefinition error If you create the function using the latter, then you can pass it just a single parameter which will be interpreted as the first. If you want default values, then you can do something like this: function [ sigma_nc ] = sustained_interference( N, center_freq ) if nargin < 2

Type overloading macro

由 末鹿安然 提交于 2019-12-03 13:57:45
I have a bunch of printf debug helper macros and it would be pretty cool to have to not specify the type, is there anything you can do to allow something like macro overloading in c(can be gcc specific if its available in gcc 4.3). I thought maybe typeof but apparently that doesn't work. example macro(I also have some ascii terminal color stuff that I can't remember of the top of my head) #ifdef _DEBUG #define DPRINT_INT(x) printf("int %s is equal to %i at line %i",#x,x,__LINE__); . . . #else #define DPRINT_INT(x) . . . #endif Try this; it uses gcc's __builtin methods, and automatically

How does method overload resolution work (LINQ Where extension method)?

由 让人想犯罪 __ 提交于 2019-12-03 13:23:14
If I have a variable of type IQueryable<T> I have four extension methods for Where in namespace Systm.Linq available: public static IQueryable<T> Where<T>(this IQueryable<T> source, Expression<Func<T, bool>> predicate); public static IQueryable<T> Where<T>(this IQueryable<T> source, Expression<Func<T, int, bool>> predicate); public static IEnumerable<T> Where<T>(this IEnumerable<T> source, Func<T, bool> predicate); public static IEnumerable<T> Where<T>(this IEnumerable<T> source, Func<T, int, bool> predicate); (The last two because IQueryable<T> inherits from IEnumerable<T> .) If I use a

Which constructor is called first while passing null in the class having overloaded constructor?

由 |▌冷眼眸甩不掉的悲伤 提交于 2019-12-03 12:55:03
Below is the java class having 3 overloaded constructors : public class Test { public Test(Object i){ System.out.println("Object invoked"); } public Test(String i){ System.out.println("String invoked"); } public Test(int k){ System.out.println("Integer invoked"); } public static void main(String[] args) throws Exception { Test t = new Test(null); } } If null value is passed while creating the new instance of class, which constructor will be invoked ? What is the reason ? Java always chooses the most specific method (or constructor) that would be applicable for the argument you pass. In this

Can I pass a primitive type by reference in Java? [duplicate]

由 百般思念 提交于 2019-12-03 12:36:18
问题 This question already has answers here : How do I pass a primitive data type by reference? (8 answers) Closed 4 years ago . I would like to call a method which could potentially take on different versions, i.e. the same method for input parameters that are of type: boolean byte short int long The way I would like to do this is by "overloading" the method (I think that is the correct term?): public void getValue(byte theByte) {...} public void getValue(short theShort) {...} ... etc ... ... but
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