C# help (jayfella / hyperz)

[Hyperz]

http://code-projects.com/forum/topic/1384-collection-of-books-on-c#-dotnet-wpf-and-xna/

^Some of the books I read and of which I know they are fairly good. Especially C# 2005 for Dummies if my memory doesn't fail me.

 

[jayfella]

lemme try help. You pair with all your long words making things all hard to understand and telling him to read 500 page books :/

The reason you declare it twice in that instance is because you are creating an instance of that object. lemme show you. practical ftw.
Here are a few ways of declaring stuff.

// Create an array
object myObject = new object[] {"hello", "one", "two", 3};

// Create a string from an object
string myString = (string)myObject[1];

// int from object
int myInt = (int)myObject[3];
string myLength = (string)myObject.Length

So basically you see that things dont have to be what they once were. Almost everything can be converted to something else. So its not always "object myObject = new object" - sometimes its like the ones in the example.

 

[litewarez]

The TypeCasting is bascially the same in PHP aswell, Thanks for the .Lenght does that work on arrays and strings ?

 

[jayfella]

yep.

e.g.

u have an array called "bob" - u can get the size of the array by using .Length - same for strings yes.

e.g.

string[] myString = new string {"one", "two", "three", "four" };

// SIZE of array (in this example, would return "3")
int size = myString.Length;

// LENGTH of string within the array (in this case, would return "5")
int size = myString[2].Length;

 

[litewarez]

Jay why do you have to declare as string

string[] myString = new string {"one", "two", "three", "four" };

should it not be

array[] myArray = new array {"one", "two", "three", "four" };

??

 

[Hyperz]

no because you declare an array of strings, not an array of array's ^^.

 

[litewarez]

what if it was a mixture of strings and integers ? sorry if there stupid questions !

 

[snowmanrene]

I wanna learn too

Me going to be better than lite at C# hehehe

 

[Hyperz]

what if it was a mixture of strings and integers ? sorry if there stupid questions !

Again, forget you know PHP. An array can, or better: should, contain only one type. Not mixed. The reason you can mix them in php is because it's a dynamic language. It doesn't use types. A CPU works with types too so that's why all major programming language work with types. Types are everything.

The only thing you should remember from PHP is if-else, switch, etc. The basics. Everything else is not gonna apply to C# because PHP is not a real programming language.

Edit:
Having said that I should add that even though I know all of this is a bit confusing for you right now. The important thing is to bite the bullet. After a month or 2 you'll have a much better understanding of it. I started out with HTML, PHP, JS etc and moved to C# later on. I've been trough the same transition . Also, C# is one of the easier languages out there .

 

[jayfella]

yeah i did give a bad example. What i did with the object is kinda bad, you shouldnt really use an object like i did, but tbh, i know the outcome, which is why i am happy to use them like that.

 

[Dman]

I had same kind of problems when switching from PHP to Java/C#

In PHP what you call arrays are in reality hashes.

Arrays are supposed to just have numbers as their indexes, fixed length and of a particular type.

In hashes, you can store anything.

Here is the C# version of hashes: http://msdn.microsoft.com/en-us/library/xfhwa508.aspx