Casting is a process where an object type is explicitly converted into another type if the conversion is allowed.

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Changing the type of an object inside a method?

First off, this is not my code. I'm curious what everyone thinks about changing the type of an object inside of a method then modifying the properties of the cast type. I wanted to use composition to ...
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301 views

Avoiding code duplication and retaining const correctness

Sometimes I run across the problem of having two member function overloads that only differ in the constness of this (and the return type, but that is less ...
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75 views

Avoiding casts in abstract types

I asked this question on Stack Overflow and in the comments someone had this to say. In a proper design, you should almost never have to do a dynamic_cast, even if it's hidden inside some nice ...
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3answers
72 views

Limited typecasting with regex

long time user/lurker at stackoverflow, first time here. I've seen a lot of questions like this have people point to this section of the StackExchange network so I hope this is the right place. I'm ...
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1answer
125 views

Different Constructors, Same Implementation

I have this class containing two constructors with different signatures but they do the same thing: ...
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1answer
171 views

Can casting to fragment be more efficient than using a variable?

I'm new to using fragments in Android. I'm working on an app using a sliding panel layout and I just came up with an idea for changing my fragments. I decided to create the following method: ...
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2answers
520 views

Pointer casting. Correct alignment and code style

There is a function that converts region code strings (1 to 4 characters and null terminator) to 32 bit integers codes to be used in maps as keys or values. Blindly casting char* to int* is bad as it ...
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1answer
148 views

Is this a conforming implementation of duration_cast?

Sadly VS2012's duration_cast is broken, and I actually need the functionality which is broken. So, I wrote my own: ...
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1answer
68 views

Are my implicit type conversions correct? [closed]

I'm having some issues with my code and I'm trying to rule out any syntax or programming mistakes. One of the things I'm trying to rule out is the different variable types used in my equations. I'm ...
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1answer
243 views

Collection of Actions

I am trying to create a class to queue up a series of commands. (Not really a queue as events happen based on time). Each command has a callback (Action) that get's called. However, each Action has a ...
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2answers
77 views

NSArray and NSNumber-int conversions

I have a textView which is displaying a string. I also have an array which keeps track of where every line begins, it stores the "start index" or NSRange.location for every line. However, when text ...
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2answers
88 views

Could I get rid of all these downcasts?

For a homework assignment we have to write a class that simulates water breaking a floodbank (very simplistic 2D simulation). My implementation works fine but I found that there were many downcasts ...
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1answer
250 views

Returning a more specific class

I would appreciate some feedback on my design of a few classes to query the Trakt.tv API. ...
8
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1answer
2k views

Improve my TryCast<T> method

This isn't urgent, it is more along the lines of trivia or a challenge. The solution works fine as it is, but I suspect it could be better. What follows is a method I came up with a while back in a ...
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2answers
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209 views

Cast inside the method or let the client code cast, which one is better?

I have two choices of implementing a method, the first one is a generic type where the client code does not have to cast ...
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2answers
1k views

(sort of) casting types in Ruby: changing class of an instance [closed]

I defined the class Rectangle: ...
2
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1answer
118 views

Is it safe to cast a pointer to non-void function into a pointer to void function?

I thought it was a good idea to use this in my C++ projects: ...
4
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1answer
99 views

Demonstration of pthread calls

Please review for any unnecessary casting, memory leaks, wrong use of pthread call, or validation problems in the given code. ...
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1answer
89 views

Nice way to using cast on TextView [closed]

Question is short. Assuming that I don't need reference itself, would this cast ((TextView) findViewById(R.id.someTextView)).setText("lala"); be better (or at ...
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vote
1answer
584 views

Loading an Object from File with Type-Safety and Thread-Safe access

I'm attempting to write a bit of code that allows for easy and safe access to objects in a file. It seems to work great but I was curious if there was an easier way to do this or if Java already has ...
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1answer
483 views

Is there a better way to cast between decimal and generic in this C# code sample?

I have written a helper method which computes the sum of values in some custom grid, given the column indexes. The method appears to work (for a decimal - as Anthony pointed out, I need to test this ...
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2answers
93 views

Over-Riding User Input

Here's a trivial example: if type(length) != int: length = 16 as opposed to: ...
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1answer
2k views

Casting const pointer to non-const pointer when using struct iovec

struct iovec is defined in <uio.h> by the following way: ...
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2answers
3k views

Is this a proper way to check a viewstate of type int?

In page load I'm saving a query string int value in a viewstate. Then I save it to my DB. Here is the code I use to retrieve viewstate value and validating it: ...
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2answers
378 views

C++ int_cast<> function for checked casts?

In order to detect run-time integer casting problems, I've created this function*: ...
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2answers
158 views

A way to do this without a lot of variables and casting?

Currently I have this code: ...
6
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2answers
546 views

How can I avoid unchecked cast warning in my generic recursive Iterator?

It's somewhat odd that Java's collection framework has no iterator for recursive data structures. Since I needed something like this, I wrote my own. First off, I need recursive elements: ...
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4answers
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Euclidian distance - optimization and casting

I'm trying to optimize a simple Euclidian distance function in C. It's for a DLL, and calculates distances from one point to many. I have: Version 1: ...
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2answers
3k views

C++ string_cast<> template function

In C++, to simplify string conversion between std::string and std::wstring, I created the following utility template functions: ...
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555 views

Multiple explicit cast operations

This sample code works fine, but it looks awful. How would you improve this? ...
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504 views

Loops for removing unnecessary lines

I have the following method: ...