Ivory Tower
Control Structures
The structure of Perl is more like C# than Python While Python uses white-space to delineate lines of code, Perl uses ";" a semicolonAlso like C#, Perl uses "{}" Curly brackets to create BLOCKS of code VariablesMuch like Python, Perl doesn't require you to declare variables separately from expressions.You can declare variable WITHIN the expression.Perl offers three types of variables: Scalars, Arrays and Associative Arrays We're going to show you the first two: Scalars and ArraysPrinting in Perl works much in the same way as printing in PythonYou can print numbers, strings, variables, and combinations thereof.These are either numbers or stringsPerl doesn't require you to mark a variable as either a number or a string... it all looks the same to PerlPerl also doesn't require you to differentiate between integers and real numbersYou declare a scalar variable by using "$" right before the name of the variable $Var1 = 28 creates a variable named "Var1" containing the integer "4"$Var2 = "Coding 101" creates a variable named "Var2" containing the string "Coding 101"$Var3 = 3.14 creates a variable named "Var3" containing the decimal number "4.5"An array is a ONE-DIMENSIONAL indexed list of Scalar variablesYou declare an array by using "@" right before the name of the arrayIndividual scalar variables within the array can be accessed by pointing to their index with the SCALAR identifier @C101 = ("Padre", "Snubs", "Bryan") creates an array named "C101" and fills it with the strings, "Padre", "Snubs" and "Bryan"@coding = @C101 creates an array called, "coding" and fills it with the values from the array "C101"$C101[2] = "Cranky Hippo" changes the value in the third item in the array "C101" from "Bryan" to "Cranky Hippo"Hosts: Fr. Robert Ballecer, SJ and Shannon Morse
Bandwidth for Coding 101 is provided by CacheFly.
View all episodes
