symbolic constant- no type checking->the value is just substituted
enumeration- more type safe than symbolic constant
constant variables- most type safe
Anything else that can be added here?
Any difference in terms of space occupied by these?
...
i would like to make my code easier to read by replacing long paths with variables, or something similar.
in my code, i can target an instance many times, but the instance can have a lengthy path deep within the display list. for example: myButton instance could be located at myButtonsPanel.section2.redArea.myButton, or something like...
I am trying to grok the following piece of code:
Mid$(strV, i, 1) = Chr$(intChar And &HDF)
What does &HDF mean? I also have a similar section that uses @H20. I have Googled high and low and the most I found was nothing that I didn't already know about them...that they are constants.
...
How do you reference an interface constant with EL on a JSP page?
I have an interface Addresses with a constant named URL. I know I can reference it with a scriplet by going: <%=Addresses.URL%>, but how do I do this using EL?
...
I'm writing porting file-io set of functions from c into a c++ class. "Magic numbers" (unnamed constants) abound.
The functions read a file header which has a number of specific entries whose locations are currently denoted by magic numbers.
I was taught by a veteran programmer a couple years back that using "magic numbers" is inher...
I have a VB6 project that references COMSVCSLib and one of the methods makes calls to COMSVCSLib's SharedPropertyGroupManager.CreatePropertyGroup passing LockMethod and Process as parameters.
Cleaned up VB6 code:
Dim groupName As String
Dim spmMgr As COMSVCSLib.SharedPropertyGroupManager
Dim spmGroup As COMSVCSLib...
Hi! I want use a constant in Python for 2 classes.
Which is the better way? Thanks in advance!
MY_COLOR = "#000001" # <-------- Are correct here?
BLACK = "#000000" # <-------- Are correct here?
class One:
MY_FONT = "monospace"
def __init__(self):
if MY_COLOR == BLACK:
print("It's black")
if sel...
Microsoft naming conventions for .Net put constants in Pascal Case. In fact, it explicitly tells us to avoid using all caps for constants:
You might also have to capitalize
identifiers to maintain compatibility
with existing, unmanaged symbol
schemes, where all uppercase
characters are often used for
enumerations and consta...
So I was porting my game engine from SDL to SFML, and now I have a problem with my input system.
Input.h
#ifndef BULLWHIP_INPUT_H
#define BULLWHIP_INPUT_H
#include
class bc_Input
{
public:
bool bm_KeyHit(sf::Key::Code key);
bool bm_KeyDown(sf::Key::Code key);
int bm_MouseX();
int bm_MouseY();
...
I have an app that heavily relies on dates. There is a moderately expensive calculation that is needed to set these dates, based on the current date. As far as each request is concerned, these dates are constants -- they don't change once created -- but they do change throughout the week. The dates are used in both controllers and models...
I would like to accomplish something like what is being done in this post: http://stackoverflow.com/q/538996/252428
however, i would like to construct an NSDictionary.
if i do something like:
constants.h
extern NSArray *const mFooKeys;
extern NSArray *const mFooObjects;
extern NSDictionary *const mFooDictionary;
constants.m
NSAr...
I am interested in doing this the "Rails Way" on a new application. I would also like to refer to constants in some sort of context to make the code more readable. I have an application where a user can request access to another users's data set. This AccessRequest can have one of the following statuses:
Review
Denied
Approved
I can s...
In which file should I define application-wide constants that are specific to my cakephp app?
...
Hello.
I'm developing an Android application and I'm very new on Java and Android.
I want to create some constants to use in some activities. Where can I define these constants?
Thanks.
...
How can i list all the names (and values) of public (and private / protected) const defined in a class ?
public class Layers {
public const BACKGROUND:String = "background";
public const PARENT:String = "parent";
public const MAP:String = "map";
public const LINES:String = "lines";
public const POINTS:String = "poin...
class foo
{
const bar;
}
and to access it we have to do: self:bar; and not, $this->bar;
Is this correct?
If so, why?
Thanks a lot,
MEM
...
Hi, which is the correct way to document class constants for phpDoc? I've read the manual but i can't find anything about them
...
const int z = 420;
printf("\n%d | %d",z ,*(&(*(&z+1))-1) );
// O/P:420 | 420
printf("\n%u | %u",&z,(&(*(&z+1))-1) ); //address
// O/P:1310548 | 1310548
*((char *)&z+1) = 21; //I change value for the 1st-Bit
//corrupting constant
printf("\n%d | %d",z ,*(&(*(&z+1))-1) );
//the com...
Possible Duplicate:
Modified a constant in c
const int z = 420;
const void *v;
v = &z;
printf("\n%d | %d",z,*(int *)v);
//420 | 420
printf("\n%d | %d",*(char *)&z,*(char *)v); //0th-Bit same value
//-92 | -92
printf("\n%d | %d",*((char *)&z+1),*((char *)v+1) ); //1st-Bit same value
//1 | 1
/*************************...
I'm not sure where to even start this assignment:
In shopping for a new house, you must consider several factors. In this problem the initial cost of the house, the estimated annual fuel costs, and the annual tax rate are available. Write a program that determines and displays the total cost of a house after a five-year period and execu...