Yes, Perl is eclectic - lots of things it can do, taken from lots of places and so, yes, it does have all three of those operators!
-> Run the method named to the right on the object named on the left
>= Return 1 (a true value) if the expression to the left is numerically greater than the expression to the right
=> Normally used to indicate a key, value pair for entry into a hash. In fact, the => operator is the equivalent of a , (a comma) which can be used instead - the=> is just provided to make the your code easier to read, and (in some circumstances) saves you the need to quote keys.
Examples:
$kgs = $current->getweight();
# Get the weight of the $current object
print "heavy\n" if ($kgs >= 100);
# Print out if $kgs is numerically 100 or greater
%info = (weight => 120, height => 1850);
# Set a hash with 2 key, value pairs
(written 2006-11-18)
Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articles
P218 - Perl - More Objects [227] Bellringing and Programming and Objects and Perl - (2005-02-25)
[246] When to bless a Perl variable - (2005-03-15)
[531] Packages in packages in Perl - (2005-12-16)
[588] Changing @INC - where Perl loads its modules - (2006-02-02)
[592] NOT Gone phishing - (2006-02-05)
[656] Think about your design even if you don't use full UML - (2006-03-24)
[831] Comparison of Object Oriented Philosophy - Python, Java, C++, Perl - (2006-08-13)
[1217] What are factory and singleton classes? - (2007-06-04)
[1320] Perl for Larger Projects - Object Oriented Perl - (2007-08-25)
[1435] Object Oriented Programming in Perl - Course - (2007-11-18)
[1664] Example of OO in Perl - (2008-06-03)
[1665] Factory method example - Perl - (2008-06-04)
[1819] Calling base class constructors - (2008-10-03)
[1949] Nuclear Physics comes to our web site - (2008-12-17)
[2427] Operator overloading - redefining addition and other Perl tricks - (2009-09-27)
[2651] Calculation within objects - early, last minute, or cached? - (2010-02-26)
[2717] The Multiple Inheritance Conundrum, interfaces and mixins - (2010-04-11)
[2811] Igloos melt in the summer, but houses do not - (2010-06-15)
[2876] Different perl examples - some corners I rarely explore - (2010-07-18)
[2972] Some more advanced Perl examples from a recent course - (2010-09-27)
[3097] Making Perl class definitions more conventional and shorter - (2010-12-20)
[3098] Learning Object Orientation in Perl through bananas and perhaps Moose - (2010-12-21)
[3377] What do I mean when I add things in Perl? - (2011-08-02)
[3581] Perl - calls to methods that use => - what do they mean? - (2012-01-16)
[3941] Building an object based on another object in Perl - (2012-12-03)
[4096] Perl design patterns example - (2013-05-20)
[4098] Using object orientation for non-physical objects - (2013-05-22)
[4356] Object factories in C++, Python, PHP and Perl - (2014-12-19)
[4366] Changing what operators do on objects - a comparison across different programming languages - (2014-12-26)
P211 - Perl - Hashes [240] Conventional restraints removed - (2005-03-09)
[386] What is a callback? - (2005-07-22)
[738] (Perl) Callbacks - what are they? - (2006-05-30)
[968] Perl - a list or a hash? - (2006-12-06)
[1334] Stable sorting - Tcl, Perl and others - (2007-09-06)
[1705] Environment variables in Perl / use Env - (2008-07-11)
[1826] Perl - Subs, Chop v Chomp, => v , - (2008-10-08)
[1856] A few of my favourite things - (2008-10-26)
[1917] Out of memory during array extend - Perl - (2008-12-02)
[2833] Fresh Perl Teaching Examples - part 2 of 3 - (2010-06-27)
[2836] Perl - the duplicate key problem explained, and solutions offered - (2010-06-28)
[2915] Looking up a value by key - associative arrays / Hashes / Dictionaries - (2010-08-11)
[2920] Sorting - naturally, or into a different order - (2010-08-14)
[3042] Least Common Ancestor - what is it, and a Least Common Ancestor algorithm implemented in Perl - (2010-11-11)
[3072] Finding elements common to many lists / arrays - (2010-11-26)
[3106] Buckets - (2010-12-26)
[3400] $ is atomic and % and @ are molecular - Perl - (2011-08-20)
[3451] Why would you want to use a Perl hash? - (2011-09-20)
[3662] Finding all the unique lines in a file, using Python or Perl - (2012-03-20)
P204 - Perl - Conditionals and Loops [353] Wimbledon Neck - (2005-06-20)
[1191] Smart English Output - via PHP and Perl ? : operator - (2007-05-18)
[1468] Lexical v Arithemetic testing, Bash and Perl - (2007-12-11)
[1477] Decisions - small ones, or big ones? - (2007-12-18)
[1607] Learning to program in Perl - (2008-04-11)
[1696] Saying NOT in Perl, PHP, Python, Lua ... - (2008-07-04)
[1727] Equality and looks like tests - Perl - (2008-07-29)
[2351] Ternary operators alternatives - Perl and Lua lazy operators - (2009-08-12)
[2550] Do not copy and paste code - there are much better ways - (2009-12-26)
[2711] For loop - checked once, or evety time? Ruby v Perl comparison and contrast - (2010-04-07)
[2832] Are you learning Perl? Some more examples for you! - (2010-06-27)
[3004] Increment operators for counting - Perl, PHP, C and others - (2010-10-18)
[3397] Does a for loop evaluate its end condition once, or on every iteration? - (2011-08-18)
[3895] Flowchart to program - learning to program with Well House - (2012-10-14)
[4031] Showing what programming errors look like - web site pitfall - (2013-03-06)
[4322] Learning to Program - the conditional statement (if) - (2014-11-21)
[4323] Learning to program - Loop statements such as while - (2014-11-22)
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