Questions tagged [generic-function]
81 questions
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Methods selection for an inherited S4 class
My question is how to apply the generic function plot() using my new method for my inherited S4 class.
I extend the existing S4 class (whose name is stanfit) in rstan, say lowerS4class, and define a new method for generic function plot for the…
Camford Oxbridge
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1
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1 answer
Avoid having to specify T type in a generic function
I've got this generic extending function that cast an object with a specific parent type as a child type (found the code here : Unable to Cast from Parent Class to Child Class) :
public static U ParentToChild(this T parent) {
…
Bill_LeBoquet
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1
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3 answers
avoid repeating code in swift 4
I would like to create a generic function to avoid repeating while using conditions. Is there any possible ideas to achieve this?
Thanks
struct ObjectDataItem {
var name: String
var value: String
}
static func arrayFields(arrayObject: ArrayObject)…
dicle
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1 answer
R: Creating S3 object with separate internal and external names
I am trying to figure out how to create a class in R with certain properties. Basically I'd have a constructor that takes a data frame as it's first argument followed by mandatory identification of certain columns or column ranges, by name(s) or…
andrewH
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Override non-default method and avoid recursion
What programming principles can help me avoid recursion when using the generic function system to dispatch a modified method that calls the original method?
Background
I'm not satisfied with the behavior of bit64::as.integer64.character() for…
C8H10N4O2
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2 answers
Call generic closure with concrete type
Is it possible to call a generic function using a concrete type, with a concrete struct?
Here a small example of what I want to do:
trait T {}
trait T2 {}
struct S1 {}
struct S2 {}
impl T for S1 {}
impl T for S2 {}
fn test(foo: &S1, bar: &S2,…
Cooki3Tube
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1 answer
Core Data / Swift 3.0
Here is a function (very useful to insert information into Core Data) that has been working for quite a long time. Since I moved to Swift 3.0, it is having trouble, crashing on the first line. Did I miss something?
func…
Michel
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2 answers
Conform class extension to generic protocol function
* Short version *
How can I conform a class (extension) to a generic protocol function?
* Long version *
This is a small part of a data structure to support a paginated collection,
protocol Pageable {
//an object whose can be in a…
jalone
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1
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3 answers
problem writing a simple STL generic function
I'm self-learning how to create generic functions using iterators. As the Hello World step, I wrote a function to take the mean in the given range and returns the value:
// It is the iterator to access the data, T is the type of the data.
template…
recipriversexclusion
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Comment of generic function (C++/CLI) not recognized in C# and Visual Studios' Object Browser
I recognized two issues in commenting (XML style) Visual C++/CLI generic functions. Typed functions behave as expected.
System configuration is Windows 7 and Visual Studio Premium 2013. The project is a C++/CLI project and outputs a…
Christian St.
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1
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1 answer
trait constraint on specific function rather than whole implementation
I'm trying to implement a generic struct that can take any type parameter.
struct Position{
x: T,
y: T,
}
impl Position{
fn add(&self, other: &Position) -> Box>{
box Position{x:self.x + other.x,…
basic_bgnr
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1
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1 answer
Common lisp CLOS dispatch
Is there a good way to get a generic function to dispatch on the car of a list?
I've been working on a symbolic algebra program, and at the moment am storing a lot of data as lists with different keywords as the cars to indicate type. For example,…
Riley
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1
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2 answers
Common Lisp: Generic Function Specializing on Array Length
I am just getting started with generic functions and am wondering if this is possible (I really hope so!).
I have made 3 packages for handling vectors of different lengths: vector2, vector3 and vector4.
Each package has functions that handle vectors…
Baggers
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How to make a version of LINQ OrderBy, which uses a Radix Sort for Dates
This specification requires the algorithm to have the lowest possible order of complexity.
I am trying to create my own version of LINQ .OrderBy() to achieve this, using a Radix Sort.
IE I am trying to create
var sortedListOfAppointments =…
delphie
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- 1
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1 answer
How to pass different `rapidjson::GenericObject`s to function?
I have a function where I would like to pass a rapidjson::GenericObject as a parameter, e.g.
MyObject readObject(rapidjson::GenericObject& obj)
{
// ...
}
However, depending on how I extract the object,…
Markstar
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