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The followig are techical (or at least technically used) terms from chapter 1 that I don't understand: The following are technical (or at least technically used) terms from chapter 1 that I didn't understand to start with:
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   * "side effects" : assignment statements that update variables and data structures. Does that mean that updating a variable is a side effect? I thought assignement statements directly affected change in the variables not that through some unknown or unrelated consequent action a variable happened to be updated by an assignemnt or update statement.
   * Denotational sematics : no definition given
   * Attribute grammars : this and the previous one "are methods for describing what programming languages do."		    * "side effects" : assignment statements that update variables and data structures. Does that mean that updating a variable is a side effect? I thought assignment statements directly affected change in the variables not that through some unknown or unrelated consequent action a variable happened to be updated by an assignment or update statement. OK so the side effect is associated with a call to a function or maybe an assignment statement that has unexpected results. x = y++; or x=++y;
   * DenotationalSematics : [no definition directly given in book]. See below
   * AttributeGrammars : this and the previous one "are methods for describing what programming languages do." 

Compiler Construction Chapter 1: Introduction

The following are technical (or at least technically used) terms from chapter 1 that I didn't understand to start with:

  • environments p11 : Symbol Tables (Which I have never been properly introduced too either) mapping variable names to information about the variables.
  • "side effects" : assignment statements that update variables and data structures. Does that mean that updating a variable is a side effect? I thought assignment statements directly affected change in the variables not that through some unknown or unrelated consequent action a variable happened to be updated by an assignment or update statement. OK so the side effect is associated with a call to a function or maybe an assignment statement that has unexpected results. x = y++; or x=++y;

  • DenotationalSematics : [no definition directly given in book]. See below

  • AttributeGrammars : this and the previous one "are methods for describing what programming languages do."

Also see Semantics

Csce825Chapter1Notes (last edited 2010-12-31 19:35:59 by 71-88-174-166)