2011年8月12日 · Constants are expressions with a fixed value. Literals are the most obvious kind of constants. They are used to express particular values within the source code of a program.

2014年12月22日 · 0L is a long integer value with all the bits set to zero - that's generally the definition of 0.The ~ means to invert all the bits, which leaves you with a long integer with all the bits set to one.

In order to understand why this is the case though, one needs to understand the boxing that is going on. Structs don't have inheritance like reference types: object is not the base class in the same sense that it is for reference types -- casting a value-type to object actually wraps the value inside of an object in

2014年7月2日 · Long foo = (long) 0; // First way of doing it This way will create an int then cast it to a long.. Long bar = 0L; // Second way of doing it

2012年7月14日 · I've always wondered why leading zeroes (0) are used to represent octal numbers, instead of — for example — 0o.

2015年2月9日 · x + 0L is an element wise operation on x; as such, it often preserves the shape of the data.as.integer isn’t: it takes the whole structure – here, a matrix – and converts it into a one-dimensional integer vector.

2011年5月1日 · @MattiVirkkunen sorry I'm a swift developer converting android projects to iOS. I don't have eclipse or android studio to set a variable and read it's value.

Nothing. Long b = 0L; will undergo autoboxing.The compiler replaces it with: Long b = Long.valueOf(0L); You can see this if you decompile your class, e.g. using javap.

2009年12月15日 · You can use false, 0, 0l, 0L, 0ul, 0u, 00, or any number of ways to represent the literal zero.The literal zero is basically a magical symbol that happens to also correspond to a null pointer constant.

2010年12月24日 · 0L is an integral constant expression with the value of zero. When used as a pointer, such a constant expression is a null pointer constant.