COMPSCI 1MD3 Lecture Notes - Lecture 2: Information Hiding, Code Reuse, Infix Notation
15 Jun 2015
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5: type things into the shell and responds automatically, an interactive language, usually we write a program and load it in the shell to execute, color scheme to highlight the syntax, uses basic algebra: -, +, /, * 3/2 could be 1. 5 which is an integer, 3/2 is real (opposite) 14//3 is the quotient when 14 is divided by 3 and 14%3 is the remainder. // is for integer division: % is module operation, looking for the remainder. ** is for exponentials: abs is for absolute value-uniary operation: takes the value and removes the sign-function, min() is for the minimum value-function, max() is for the maximum value-function. Java, python, c, c+: pascal uses =: for assignment, equality , ambiguous airthmetics, 2 * 3 + 1 is not actually 7, abstract: a (circle) b (triangle) c, associatinty, assigning an order to mathematical expressions, e. x. 2**3**4: order matters, right associative operation a-(b-c)
