C # essence on reading notes

1. Constant Const FEATURE:

Constants must be initialized at declaration time, and when a value is specified, it is no longer possible to modify the

Constants are always static and do not have to (in fact, be disallowed) include modifiers in a constant declaration static

Constants cannot be initialized from values that are extracted from a variable, and if you need to do so, you should use a read-only field???

2. Reference type and value type

Difference: value types store their values directly, whereas reference types store addresses that reference values, value types are stored on the stack, and reference types are stored on the managed heap

3, all integer types of variables can be given a decimal or hexadecimal value, the latter requires a 0x prefix long x =0x12ab;

To specify the type of value as a different integer type, you can add the following character after the number: uint num = 1234U;  Long num =1234l; ULONG Num =1234ul;

In fact, there is no need to add, because at compile time will be added automatically, such as: long num = 8; Num =num+12; Anti-compilation In the past, is a long num =8l; num = num+12l;

Cond...

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C # essence on reading notes