percentage

[Peter]

Hi

is there a "percentage type" in c#, or how do I specify that a
parameter to my method may only take integer values from 0 to 100?

For example:

public bool Reject(Guid guid, Percent percent)
{
// do stuff...
return true;
}


Would I need to create my own type for this; or just check an "int"
value supplied and reject it if it is outside my bounds?

Thanks,
Peter

--

[Peter Duniho]

Re: percentage

On Tue, 19 Feb 2008 00:20:45 -0800, Peter <xdzgor@hotmail .comwrote:

[...]
Would I need to create my own type for this; or just check an "int"
value supplied and reject it if it is outside my bounds?

If you want a type that can never have a value other than 0 to 100,
yes...you'd need to create your own type.

However, I do think that simply range-checking the parameter is fine. You
can throw a new ArgumentExcepti on, or handle the error some other way if
you don't think that's appropriate.

Pete

[Peter]

Re: percentage

Kevin Spencer wrote:

Percentage is a way of representing a ratio.

<snip>

So, a percentage is a rational number, which might be represented by
an integer, a float, a double, a decimal, or even a function. How you
handle it in your application is really an application-specific
problem, dependent upon your application's requirements.

Yes, while I have a need for a "percentage " in my application, what I
really need is a number which can take values from 0 to 100. It is a
configuration setting where the user can set a level from 0% to 100%.

I just wondered if c# had such a possibility in an easy/built-in
fashion.

Although I have not used Pascal in many years I have a hazy
recollection that this was possible via something like specifying
"0..100" in the variable's declaration (but then again I could be
completely wrong).

/Peter

--

[Peter]

Re: percentage

Kevin Spencer wrote:

Percentage is a way of representing a ratio.

<snip>

So, a percentage is a rational number, which might be represented by
an integer, a float, a double, a decimal, or even a function. How you
handle it in your application is really an application-specific
problem, dependent upon your application's requirements.

Yes, while I have a need for a "percentage " in my application, what I
really need is a number which can take values from 0 to 100. It is a
configuration setting where the user can set a level from 0% to 100%.

I just wondered if c# had such a possibility in an easy/built-in
fashion.

Although I have not used Pascal in many years I have a hazy
recollection that this was possible via something like specifying
"0..100" in the variable's declaration (but then again I could be
completely wrong).

/Peter

--

[=?UTF-8?B?QXJuZSBWYWpow7hq?=]

Re: percentage

Peter wrote:

Kevin Spencer wrote:

>Percentage is a way of representing a ratio.

<snip>

>So, a percentage is a rational number, which might be represented by
>an integer, a float, a double, a decimal, or even a function. How you
>handle it in your application is really an application-specific
>problem, dependent upon your application's requirements.

>
Yes, while I have a need for a "percentage " in my application, what I
really need is a number which can take values from 0 to 100. It is a
configuration setting where the user can set a level from 0% to 100%.
>
I just wondered if c# had such a possibility in an easy/built-in
fashion.
>
Although I have not used Pascal in many years I have a hazy
recollection that this was possible via something like specifying
"0..100" in the variable's declaration (but then again I could be
completely wrong).

You are correct.

Pascal and other languages of that family allows you to specify
types with ranges for better type safety.

Unfortunately (in my opinion) the C family including Java and C#
never implemented that type system.

Arne