started working on section 3.1 variables

Author: brettlangdon

3 - Functional Programming/1.1 - Variables.tex

@@ -44,7 +44,73 @@ \subsection{Data Types}
 variable on declaration (unlike our sudo language).
 
 
-\subsection{Operations}
+\subsection{Operators}
+Operators are symbols we can use to manipulate variables.
+There are a few different types of operators, Arithmetic, Comparison and Logical operators.
+A quick list of operators include:
+
+\begin{enumerate}
+\item Addition +
+\item Subtraction -
+\item Multiplication *
+\item Division /
+\item Equals =
+\item Equal To ==
+\item Not Equal To !=
+\item Less Than <
+\item Greater Than > 
+\item Logical AND \&\&
+\end{enumerate}
+
+And there are more!
+\par
+
+Arithmetic operators include the mathematical symbols for addition (+), subtractions (-), division(/), multiplication(*) and equals(=).
+These operators are used to directly manipulate and change variables.
+For example we can add two variables together and then store that sum into a third variable.
+
+\begin{lstlisting}[caption={Addition Operator}]
+a = 10
+b = 5
+c = a + b
+
+print c
+\end{lstlisting}
+
+We store the value of \pigVal{10} into the variable \pigVar{a} and the value \pigVal{5} into the variable \pigVar{b}.
+Lastly, we store the sum of the variables \pigVar{a} and \pigVar{b} into the variable \pigVar{c}.
+The output of this program will be \pigOut{15}.
+\par
+
+Comparison operators are used to compare variables against other variables or values.
+The output of a comparison operator will be a boolean value (\pigVal{true} or \pigVal{false}).
+Some of the popular comparison operators are the equals to (==), not equals to (!=), less than (<), less than equal to (<=), greater than (>) and greater than equal to (>=).
+
+\begin{lstlisting}[caption={Comparison Operators}]
+name = ``Brett''
+a = 10
+b = 5
+c = a + b
+
+
+if name == ``Brett'':
+   print ``Name is Brett''
+
+if a > 10:
+   print ``A is greater than 10''
+
+if b >= 5:
+   print ``B is greater than or equal to 5''
+
+if c != 6:
+   print ``C is not 6''
+\end{lstlisting}
+
+In this example we are showing a few of the comparison operators.
+The output of this code will be:\\*
+\pigOut{Name is Brett\\*
+B is greater than or equal to 5\\*
+C is not 6}.
 
 \subsection{Conclusion}
 

Programming In General.pdf

@@ -151,10 +151,6 @@ \section{Control Statements}
 \input{"./3 - Functional Programming/1.2 - Control Statements"}
 \vfill
 \pagebreak
-\section{Control Statements~}
-\input{"./3 - Functional Programming/1.2 - Control Statements~"}
-\vfill
-\pagebreak
 \section{Functions}
 \input{"./3 - Functional Programming/1.3 - Functions"}
 \vfill
@@ -167,10 +163,6 @@ \section{Classes and Objects}
 \input{"./4 - Object Oriented Programming/1.1 - Classes and Objects"}
 \vfill
 \pagebreak
-\section{Classes and Objects~}
-\input{"./4 - Object Oriented Programming/1.1 - Classes and Objects~"}
-\vfill
-\pagebreak
 \section{Inheritence}
 \input{"./4 - Object Oriented Programming/1.2 - Inheritence"}
 \vfill

Programming In General.tex

@@ -11,16 +11,19 @@ book.write(header.read());
 header.close();
 
 dirs = [x[0] for x in os.walk('.')][1:]
-
+dirs.sort()
 for d in filter(lambda d: not re.search('.git',d),dirs):
     chapter = re.sub('\d+\s-\s', '', d[2:])
+    print chapter
     book.write('\r\n\chapter{' + chapter + '}\r\n')
     if os.path.exists(d + '/' + chapter + '.tex'):
         book.write('\input{"' + d + '/' + chapter + '"}\r\n')
         book.write('\\vfill\r\n\pagebreak')
     files = os.listdir(d)
+    files.sort()
     for f in filter(lambda f: re.search('^\d+.\d+\s-\s',f), files):
         section = re.sub('\d+.\d+\s-\s|.tex', '', f)
+        print section
         book.write('\r\n\section{' + section + '}\r\n')
         book.write('\input{"' + d + '/' + f.replace('.tex', '') + '"}\r\n')
         book.write('\\vfill\r\n\pagebreak')