Beginners Introduction to the Syntax and Symantics of the Perl Programming Language
The my keyword is used to declare variables in Perl.
Variables names are prepended with the $ symbol.
In Perl, conditional operators like
if(){
...
} else {
...
}
give different options for different conditions.
For instance:
if(age > 18){
print("You are grown-up now.");
} else {
print("You are still young.");
}
In Perl, iteration operations are done using loops:
while loop:
while(){
...
}
and
for loop:
for(){
...
}.
Note: The above commands in Perl can be used in the suffix;
example: $turn = 1 if player eq "black";
In Perl, the arithmetic operators do exactly what you would expect:
+ means add;
- means subtract;
* means multiply;
/ means divide; and
% means moduli.
Note: Moduli means remainder after division.
Dividing 5 by 2 (5 ÷ 2) gives a remainder of 1.
Hence 5 % 2 = 1;
# is used for comments in Perl.
Comments are just remarks (explanations) you write along side your
code for clarity purposes (help you define what you are doing);
and also for future remembrance of what a piece of code was meant for.
The compiler neither needs nor processes them.
Tip: You don't need to write out comments as you follow our demonstrations.
Perl References
For a more thorough explanation of Perl, please visit any of the following links:
Beginning Perl - covers a lot of concepts and explanations; Welcome to pro world!
Learning Perl - shows how to do key stuffs in Perl!
Perl Intro - the Perl documentation for an overview of Perl!