Please enable JavaScript.

Coggle requires JavaScript to display documents.

EXPRESSIONS - Coggle Diagram

- - - - Variables
        
        Constants
        
        Parenthesised expressions
        
        Function references
        
        Side effects occur when change the value of variables in an expression after the execution of that expression.
        
        The solutions are
        
        Write the language definition to disallowing functions with side effects.
        
        No two-way parameters in functions
        
        No non-local references in functions
        Advantage: it works
        
        Write the language definition to demand that operand evaluation order be fixed.
        Disadvantage: limits some complier optimizations
  - - - Unary
        
        In many languages unary + has no effect on its operands. Unary + is termed as identity operator. Negation: Changes the sign of a numerical value. Logical NOT: Flips the truth value of a Boolean expression. Increment (++), decrement(--) operators are also unary operators.
      - Binary
      - Ternary
        
        In C, C++, python and java (?:)is used as a ternary operator.
        Expression_1? Expression_2: Expression_3
    - - Associativity Rules
        
        Left associativity
        
        Right associativity
        
        Non-associativity
      - Precedence Rules
        
        Define the order in which "adjacent" operators of different types are evaluated. Precedence rules groups the operators into different types and assign them with a order of execution
    - - User defined operator overloading(C++ and Ada allow user-defined overloaded operators.)