true vs true
February 02, 2002 07:38 AM
Somebody told me
that
if(myvariable==true)
was not the same as
if(true==myvariable)
is that right ?
if yes, what is the difference
thanks
122
February 02, 2002 07:56 AM
well, they arent the same in appearance, but other than that they are the same.
Ron FrazierKronos Softwarewww.kronos-software.comMiko & Molly - Taking Puzzle Games to A Whole New Dimension
February 02, 2002 07:58 AM
using if(true==myvariable)
you can prevent the tipical error "if(myvariable=true)" because true is a constant and you can''t assign values to constants...
you can prevent the tipical error "if(myvariable=true)" because true is a constant and you can''t assign values to constants...
184
February 04, 2002 07:57 AM
I would prefer this:
if(myvariable)
{
}
Also, prevents you on the mistake mentioned above!
Wildwest
if(myvariable)
{
}
Also, prevents you on the mistake mentioned above!
Wildwest
The Wild Wild West - Desperado!
208
February 04, 2002 08:24 AM
A lot of code checking programs (PC-lint) don''t like "if"s with no explicit comparison.
February 05, 2002 04:22 PM
the difference is the order that they are evaluated in, when only looking at variables they are the same however if they are functions then there can be a difference:
both if statements are true but will produce different results, the first will print 53 the second will print 35
bool myFunc(int a){ cout << a; return true;}if(myFunc(5)==myFunc(3))if(myFunc(3)==myFunc(5)) both if statements are true but will produce different results, the first will print 53 the second will print 35
476
February 05, 2002 08:15 PM
quote: Original post by WildWest
I would prefer this:
if(myvariable)
{
}
Also, prevents you on the mistake mentioned above!
Wildwest
It also prevents someone who is reading your code from knowing if you are comparing a boolean to true, a pointer to NULL, or an integer to 0.
For clarity, I always write the entire explicit test.
ReactOS - an Open-source operating system compatible with Windows NT apps and drivers
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