C# in a Nutshell, Second Edition

Appendix D. C# Keywords

abstract

A class modifier that specifies that the class must be derived from to be instantiated.

operator

A binary operator type that casts the left operand to the type specified by the right operand and that returns null rather than throwing an exception if the cast fails.

base

A variable with the same meaning as this, except that it accesses a base-class implementation of a member.

bool

A logical datatype that can be true or false.

break

A jump statement that exits a loop or switch statement block.

byte

A one-byte, unsigned integral data type.

case

A selection statement that defines a particular choice in a switch statement.

catch

The part of a try statement that catches exceptions of a specific type defined in the catch clause.

char

A two-byte, Unicode character data type.

checked

A statement or operator that enforces arithmetic bounds checking on an expression or statement block.

class

An extendable reference type that combines data and functionality into one unit.

const

A modifier for a local variable or field declaration that indicates that the value is a constant. A const is evaluated at compile time and can be only a predefined type.

continue

A jump statement that skips the remaining statements in a statement block and continues to the next iteration in a loop.

decimal

A 16-byte precise decimal datatype.

default

A marker in a switch statement specifying the action to take when no case statements match the switch expression.

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