primitive

I can create a literal long by appending an L to the value; why can't I create a literal short or byte in some similar way? Why do I need to use an int literal with a cast? And if the answer is "Because there was no short literal in C", then why are there no short literals in C? This doesn't actually affect my life in any meaningful way; it's easy enough to write (short) 0 instead of 0S or something. But the inconsistency makes me curious; it's one of those things that bother you when you're up late at night. Someone at some point made a design decision to make it possible to enter literals

Why I cannot do this in java? Object[] o = (Object[])(new int[]{0,1,2,3.14,4}); I have a method that receives an object and then represents it as a string, but depending on his type (primitive, primitive wrapper, array, etc...). When I was creating a Unit test, I was passing an array as Object which is Ok, but when I perform cast of that object into Object[] I'm getting ClassCastException . This is only happening with primitive type arrays. Is there any way to avoid this behavior? If not, could someone explain what is the reason of this behavior on Java Virtual Machine. Any help is very

If a method has a local variable i : int i = 10; and then I assign a new value: i = 11; Will this allocate a new memory location? Or just replace the original value? Does this mean that primitives are immutable? Will this allocate a new memory location? Or just replace the original value? Java does not really make any guarantees that variables will correspond to memory locations; for example, your method might be optimized in such a way that i is stored in a register — or might not even be stored at all, if the compiler can see that you never actually use its value, or if it can trace through

I've read a bunch of tutorials involving XNA (and it's various versions) and I still am a little confused on drawing primitives. Everything seems to be really convoluted. Can someone show me, using code, the simplest XNA implementation of drawing one or two lines on to the screen? Perhaps with a brief explanation (including the boilerplate)? I'm not a games programmer and I have little XNA experience. My ultimate goal is to draw some lines onto the screen which I will eventually transform with rotations, etc (by hand). However, for this first step.. I need to simply draw the lines! I remember

best to explain with an example: in my AudioItem.h #define ITEM_CAPACITY 100 typedef struct DataStruct { void * content; UInt32 size; } DataStruct; typedef DataStruct *DataStructRef; @interface AudioItem : NSObject { DataStructRef data; } @property (assign, readwrite) DataStructRef data; in AudioItem.m @synthesize data; -(id)initWithID:(NSString *)itemID { self = [super init]; data->content = malloc(ITEM_CAPACITY); return self; } The above code looks a lot like this one, but I get a BAD_EXEC_ERROR.. how come? The reason why I would like to use a C buffer rather than some NSMutableData or