Parameters are important for any non trivial program, to help make it generic and data driven. Parameters are usually function arguments but can also be part of the configuration.
0
votes
2answers
111 views
Is there a way for Object 1 to call Object 2's enums in a function call?
For example, if I have two classes "Director" and "Follower". I want the Director to tell the follower where to go (ex: follower1.go(direction.LEFT)), and I want the Director to know what directions ...
2
votes
3answers
96 views
Is there a name for the technique of converting method parameters into a unified form to simplify further processing? [closed]
When working with methods which accept a parameter in various forms (e.g. nil, a single string, a single string containing multiple data or an array of strings) I tend to unify them - splitting, ...
3
votes
4answers
270 views
Is a long list of parameter checks an anti-pattern?
Background: I'm working on an application that will manage backup generators. These generators need to be able to be "linked" together. For example, Generator B might serve as a backup for ...
14
votes
7answers
2k views
Function only returns unchanged parameter, useless?
I just found this function in the project I'm working at:
-- Just returns the text unchanged.
-- Note: <text> may be nil, function must return nil in that case!
function Widget:wtr(text)
...
1
vote
2answers
104 views
Should I throw guard exceptions that will be thrown by internal methods anyway?
I have some fairly simple code (C#):
/// <summary>
/// Truncates a string to a maximum length.
/// </summary>
/// <param name="value"> The string to truncate. ...
2
votes
2answers
179 views
Parameterized Java Types (Generics)
Consider this "legacy" code:
public interface IPersistentCollection {
IPersistentCollection cons(Object o);
}
Genericized in Java, it could become something like this:
public interface ...
0
votes
1answer
78 views
Good practice to pass this information through URL parameter
Basically, let's suppose an application that manage some user's meetings.
I have a filtering zone on a page that aims to specify the category of items I need to specifically return.
...
1
vote
1answer
37 views
Replaceable parameter syntax meaning
Replaceable parameter syntax for the console object in C#.
I am taking the O'Reilly C# Course 1 and it is asking for a replaceable parameter syntax and it is not very clear on what that means. ...
4
votes
6answers
814 views
Is it bad practice to resolve null arguments to default static variables?
First, let me show you an example (written in ActionScript 3.0):
class GameObject {
public static function MakeFromName( pName:String,
pAtlas:TextureAtlas ...
1
vote
3answers
91 views
Setting global parameters: is this a reasonable use of const_cast and volatile?
I have a program that I run repeatedly with various parameter sets. Different parameters are used in different parts of the program (including different source files). The same parameter may also be ...
0
votes
1answer
83 views
Constructors, Ignore Arguments
Is it possible to have a constructor in a class, that you can ignore certain arguments/parameters?
For example, I have this constructor
Car(color, make, model, wheels, type, doors)
Could I call ...
30
votes
9answers
3k views
How to name a method that both performs a task and returns a boolean as a status?
If there is a method
bool DoStuff() {
try {
// doing stuff...
return true;
}
catch (SomeSpecificException ex) {
return false;
}
}
should it rather be called ...
1
vote
1answer
111 views
Should I omit the parameter “e” when using EventHandler<EventArgs>?
Whenever I am defining my own events, I use a pattern such as the following (which I believe is how the MSDN recommends doing it):
public class MyEventClass
{
private bool _value; // Backing ...
0
votes
2answers
226 views
Design Pattern: Algorithm varies according to the input arguments
I will give a simple example to help you understand my question. Suppose we have a rectangle and a Utility class with a method that creates a buffer arround a shape.
The .createBuffer method has ...
0
votes
1answer
368 views
How to encapsulate method parameters in Java?
An HTTP query can be parametrized to a list of pairs like name=value that can be encapsulated in general as Map<String, String> since an HTTP GET query is string pairs. I could need something ...
0
votes
0answers
16 views
Common practice to transfer named parameters in Tcl
Using Tcl8.5, what is the common practice to transfer named variables to a proc/method?
Something that will be similar to defining the class members when instantiating a class object [incr Tcl].
...
1
vote
2answers
227 views
How to deliver 3 different parameters to class in one method (2 of 3 are optional)
I need your help how to implement it nice and well. It's quite a simple problem. I can solve it but I need help on how to do that better.
My class has logic working using three parameters. It gets ...
3
votes
2answers
124 views
Inform caller or just let them deal with exception?
I'm not sure how to proceed in the following situation.
say we have a function as so:
def runsATask(codes):
myDicts = [helperFunc(code) for code in codes]
for item in myDicts:
# some ...
16
votes
3answers
693 views
Why not annotate function parameters?
To make this question answerable, let's assume that the cost of ambiguity in the mind of a programmer is much more expensive then a few extra keystrokes.
Given that, why would I allow my teammates to ...
0
votes
4answers
124 views
Understanding parameters
I have read this statement:
"A parameter is used as a sort of temporary messenger, carrying data originating from outside the constructor or method and making it available inside it."
So, does that ...
3
votes
3answers
572 views
Is it better to have constructors with or without parameters?
Is it better to have constructors with or without parameters and why?
public NewClass( String a, String b, int c) throws IOException
{
//something
}
OR
public NewClass()
{
//something
}
...
2
votes
2answers
2k views
Ruby - when to use instance variables vs parameters between methods?
I'm writing several methods that call other methods.
To pass the information I have a couple of choices:
Pass the information as parameters
Set instance variables so that other methods can access ...
9
votes
5answers
2k views
Multiple arguments in function call vs single array
I have a function that takes in a set of parameters, then applies to them as conditions to an SQL query. However, while I favored a single argument array containing the conditions themselves:
...
2
votes
1answer
252 views
Best practices for refactoring parameter file structure in multiple environments
Background info and what I've tried
Within each of two mostly distinct environments, say 'Research' and 'Production', there is a need for a structured parameter file. The file contains things like ...
5
votes
6answers
319 views
Fields vs method arguments [closed]
I just started writing some new class and it occurred to me that I was adding a lot of method arguments that are not strictly needed. This is following a habit to avoid having state in classes that is ...
0
votes
2answers
152 views
Factory for arrays of objects in python
Ok, the title might be a little misleading.
I have a Window class that draws widgets inside itself in the constructor. The widgets are all of the same type.
So I pass a list of dictionaries, which ...
4
votes
8answers
800 views
Passing an object into a method which changes the object, is it a common (anti-) pattern?
I am reading about common code smells in Martin Fowler's Refactoring book. In that context, I was wondering about a pattern I am seeing in a code base, and wether one could objectively consider it an ...
0
votes
3answers
674 views
UML representation of type being passed as a parameter
I want to draw a UML diagram of my program. Class Barney has a method Yabadaba(Doo d) which takes a parameter of type Doo.
How do I represent that class Doo is used in class Barney in my UML diagram?
...
0
votes
1answer
116 views
Overloading to support multiple related types (especially pointers)
Problem
I was just trying to debug a set of file-manipulation routines I wrote for a program I am working on. One of them kept returning an INVALID_HANDLE error.
Explanation
I figured out what the ...
0
votes
1answer
173 views
Generic params table design
We have a generic parameter table whose important attributes are :
id number auto increment not null
domain varchar (200) not null
classification varchar (200) not null
param_name varchar (200) not ...
