c# Arrays and wierd errors

.kbf?

float[, ,] x = null;
x = new float[4,8,8]; (all the error are on this line)

error CS1519: Invalid token '=' in class, struct, or interface member declaration
error CS0270: Array size cannot be specified in a variable declaration (try initializing with a 'new' expression)
error CS1519: Invalid token ';' in class, struct, or interface member declaration

If I declare it this way float[, ,] x = new float[4,8,8]; I works fine but from what I've found via google if you want to declare array size via a variable(which is what I want to do) you have to do it the way that's giving me the errors.

Any ideas from you programming gurus out there?

AngelHedgie

.kbf? wrote: »

float[, ,] x = null;
x = new float[4,8,8]; (all the error are on this line)

error CS1519: Invalid token '=' in class, struct, or interface member declaration
error CS0270: Array size cannot be specified in a variable declaration (try initializing with a 'new' expression)
error CS1519: Invalid token ';' in class, struct, or interface member declaration

If I declare it this way float[, ,] x = new float[4,8,8]; I works fine but from what I've found via google if you want to declare array size via a variable(which is what I want to do) you have to do it the way that's giving me the errors.

Any ideas from you programming gurus out there?

First off, there's actually a programming thread in the tech subforum, so you're best off posting the question there.

Second, I don't see why you would have to do that. float[, ,] x = new float[i,j,k]; should work fine. I'm curious to see where you got the advice.

Kakodaimonos

Can't do that with primitive arrays in C#. You always have to new it and define the sizes at the same time you declare the variable.

http://msdn.microsoft.com/en-us/library/aa288453(VS.71).aspx

If you want a variable size container, look at List<T>.

Caswynben

Kakodaimonos wrote: »

Can't do that with primitive arrays in C#. You always have to new it and define the sizes at the same time you declare the variable.

http://msdn.microsoft.com/en-us/library/aa288453(VS.71).aspx

If you want a variable size container, look at List<T>.

This isn't true. float [,,] is a valid type that can be null, and can be assigned, or used as a parameter. I am confused by the OP, because what he has there is perfectly acceptable C#. I even pasted it into VS2008 and it compiles. Do you have another error in say, the line after what you pasted?

Ganluan

Caswynben wrote: »

Kakodaimonos wrote: »

Can't do that with primitive arrays in C#. You always have to new it and define the sizes at the same time you declare the variable.

http://msdn.microsoft.com/en-us/library/aa288453(VS.71).aspx

If you want a variable size container, look at List<T>.

This isn't true. float [,,] is a valid type that can be null, and can be assigned, or used as a parameter. I am confused by the OP, because what he has there is perfectly acceptable C#. I even pasted it into VS2008 and it compiles. Do you have another error in say, the line after what you pasted?

Based on the error, I would guess the OP is actually using the second line outside of any method, something like this:

public class MyClass
{
      	 float[, ,] x = null;
         x = new float[4,8,8];

        public void MyMethod()
        {
             Stuff
        }
}

The direct assignment works because that's the default value you're assigning it. You can't do an assignment for an already declared variable as part of a class definition.

.kbf?

Ganluan wrote: »

Caswynben wrote: »

Kakodaimonos wrote: »

Can't do that with primitive arrays in C#. You always have to new it and define the sizes at the same time you declare the variable.

http://msdn.microsoft.com/en-us/library/aa288453(VS.71).aspx

If you want a variable size container, look at List<T>.

This isn't true. float [,,] is a valid type that can be null, and can be assigned, or used as a parameter. I am confused by the OP, because what he has there is perfectly acceptable C#. I even pasted it into VS2008 and it compiles. Do you have another error in say, the line after what you pasted?

Based on the error, I would guess the OP is actually using the second line outside of any method, something like this:

public class MyClass
{
      	 float[, ,] x = null;
         x = new float[4,8,8];

        public void MyMethod()
        {
             Stuff
        }
}

The direct assignment works because that's the default value you're assigning it. You can't do an assignment for an already declared variable as part of a class definition.

That's it!