I have perl, v5.6.1 built for MSWin32-x86-multi-thread Binary build 638 provided by ActiveState. I am working on a Perl script where I have declared constants that are used later for comparison purposes. For some reason, I am getting an error that states something along the line of Constant name has invalid characters at script's line ...
Is there better way than declare enumeration as public enum DepthNumberSize { Bit1 = 1, Bit4 = 4, Bit8 = 8, Bit16 = 16, Bit32 = 32 } and every time when operations with related data chunk performed switch statements are used, like: switch(size) { case DepthNumberSize.Bit1: buffer[i++] = input[j] & 1; ...
I've seen these in real code: #define SCREEN_DIMENSIONS 2 #define THREE_THOUSAND_FIVE_HUNDRED_TWENTY_TWO 3522 What is the weirdest constant you've ever seen? P.S. And of course my favorite in JScript: bool b; switch (b.ToString().length) { case 4: // true ... break; case 5: // false ... break; ) ...
I'm writing an app in Perl with several modules. I want to write some global constants that will be visible from everywhere, like this: #Constants.pm $h0 = 0; $scale = 20; And then use them without qualifying with main:: or Constants:: in several modules. However, if I write use Constants; in more than one module, they only get import...
References in C# are quite similar to those on C++, except that they are garbage collected. Why is it then so difficult for the C# compiler to support the following: Members functions marked const. References to data types (other than string) marked const, through which only const member functions can be called ? I believe it would...
I'm developing a Cocoa app, and I'm using constant NSStrings as ways to store key names for my preferences. I understand this is a good idea because it allows easy changing of keys if necessary. Plus, it's the whole 'separate your data from your logic' notion. Anyway, is there a good way to make these constants defined once for the whole...
Lately, I've come across a lot of Java code that relies on "properties files" for configuration. But instead of plain old string literals, the code uses constants (static final Strings) to retrieve the property values . I find this extra level of indirection annoying because I need to perform TWO lookups in EITHER direction. If I star...
I'm starting on a project where strings are written into the code most of the time. Many strings might only be used in a few places but some strings are common throughout many pages. Is it a good use of my time to refactor the literals into constants being that the app is pretty well established and runs well? What would be the long-t...
Hello, If i want to use something like below in a C code: if(num < 0x100000000LL) I want the comparison to happen on a long long constant, but suffix LL doesn't work in MSVC6.0 , but it works in MS Visual Studio 2005. How can i get it working in MSVC 6.0? -Ajit ...
Is it possible to simulate constants in Javascript using closures? If so, can you please furnish me with an example? ...
A commonly used term is "Magic numbers". As discussed in a related question, this is considered a code smell. I assume the same would go for string constants, although the term "Magic strings" is not in common use. So to generalize a bit, it would seem that ALL constants should be named, thus making them "unmagical". Or am I missing som...
Hi there, I'm writing some unit tests in cocoa for a data driven application. I've got a constants header file which defines a whole heap of variables including paths to the databases etc. I was wondering if it's possible to get all the classes to use a different set of constants which would link to a testing version of the database e...
Which is better? @SuppressWarnings("unchecked") @SuppressWarnings(AnnotationConstants.UNCHECKED) Where AnnotationConstants is a typical constants class... public final class AnnotationConstants { private AnnotationConstants() { } public static final String UNCHECKED = "unchecked"; ... } I know that there are a lot of...
Hi, I am working on a game and have an interesting question. I have some game-wide constant values that I want to implement in one file. Right now I have something like this: constants.cpp extern const int BEGINNING_HEALTH = 10; extern const int BEGINNING_MANA = 5; constants.hpp extern const int BEGINNING_HEALTH; extern const int B...
I have a template matrix class class defined in a header called "Matrix.h". Certain matrices are used repeatedly in my program. I thought that I would define these in the "Matrix.h" header file, like so: const Matrix<GLfloat> B_SPLINE_TO_BEZIER_MATRIX(4, 4, values); When I do this g++ complains that I redefined the constant in questi...
I recently wrote a class that renders B-spline curves. These curves are defined by a number of control points. Originally, I had intended to use eight control points, so I added a constant to the class, like so: class Curve { public: static const int CONTROL_POINT_COUNT = 8; }; Now I want to extend this class to allow an arbi...
Whenever you allocate a new array in C# with new T[length] the array entries are set to the default of T. That is null for the case that T is a reference type or the result of the default constructor of T, if T is a value type. In my case i want to initialize an Int32 array with the value -1: var myArray = new int[100]; for (int i=0...
Is there a way to assign a binary value to a vb variable? All of the obvious choices don't work. I've tried prefixing with &B, appending with b but nothing seems to work. I'm not having much luck searching for it either. I don't NEED this for my application, but am rather, just curious so alternate solutions are not necessary. [Edit...
In the following two examples I do the same thing, creating a constant String and using the concat method to modify it. Because it's a constant, I expect a compiler warning but only receive one in the second example when I use the assignment operator. Why is this? X = "hello" X.concat(" world") puts X # no warning X = "hello" X = X.con...
Hi there, A developer in a team I'm supervising prefers declaring variables as constants in his tests, e.g. const int someValue = 1; (rather than just int someValue = 1;). When I saw this I found it a bit odd and questioned what he'd done. His argument is that this is sensible for the purposes of this test - because the value he's assi...