eleGant Ruby

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Who is G ant? Who is G ant? Published Author Out of work Co v er Model 15+ Y ears W eb De v T eaches / Speaks / V olunteers Lik es T acos

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I totally paid for this image.

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WHY? WHY? eleG ant R uby eleG ant R uby Good Cheap Fast

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eleG ant L ang uage eleG ant L ang uage Rub y

def

paidMore

amount

  proc {

|e| e.salary > amount }

end C#

public Predicate<Employee>

PaidMore ( int amount ) {

return

delegate (Employee e) {

return e.Salary > amount;

  }

}

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snake_c a se v s c amelC a se snake_c a se v s c amelC a se Bonita Sharif and Jonathan Maletic from the Department of Computer Science K ent State Univ ersity T CP_IP_connection vs tcpIpConnection etc.

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eleG ant R uby eleG ant R uby Ro admap Ro admap Basics Linting Concepts

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B a sic s B a sic s Making Code Be a utif ul Making Code Be a utif ul

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Readability Readability it's important!!!

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Names

def

do_needed_actions_to_item

  e.write

  e.save

end

??????????????????????????

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K eep Methods Small

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No Neg ativity No Neg ativity Y ou're the narr ator . It's y our job to guide clearly . St ay Positive St ay Positive

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St ay Positive St ay Positive Modus P onens If A then B A therefore B If I get off of work early then I will go with y ou. I got off of work early . Therefore I will go with y ou.

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St ay Positive St ay Positive Modus T ollens If A then B Not B therefore not A If a str anger shows, the dog will bark. The dog did not bark Therefore a str anger did not show . - The Hound of the Bask ervilles

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St ay Positive St ay Positive

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St ay Positive St ay Positive

if !user.is_full?

  tacos.deploy

end

unless @breakfast == nil

  Takeout.deliver(@breakfast)

end

unless user.is_full?

  tacos.deploy

end

if @ breakfast

Takeout .deliver ( @breakfast )

end

Takeout .deliver ( @breakfast ) if @ breakfast

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Linting Linting Keeping Code Be a utif ul Keeping Code Be a utif ul

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Linting Linting with R ubo cop with R ubo cop et al.

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Linting Linting should be friendly should be friendly REMEMBER - It's about people

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Git-Hook s Git-Hook s linting on commit linting on commit Mo ving hooks to the repo: https:/ / github.com/icefo x/ git-hooks

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Concept s Concept s Be a uty in A b str action Be a uty in A b str action

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R uby F an-boy Checklist R uby F an-boy Checklist OOP Dynamic Interpreted Multi-platform Garbage Collection Open Source Intuitiv e / Expressiv e Community Maturity

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Higher-order Functions Higher-order Functions Others are first-order functions NO T T O BE CONFUSED WITH first-class functions

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Functional Progr amming Functional Progr amming map, collect, select, reject, find, an y?, all?, sort

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Blo c s Pro c s and Blo c s Pro c s and L ambda s L ambda s

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The Need The Need

Array.new(

5 )

=> [nil, nil, nil, nil, nil]


Array.new(

5 , 100 )

=> [

100 , 100 , 100 , 100 , 100 ]

Array.new(

5 , rand( 100 ))

=> [

65 , 65 , 65 , 65 , 65 ]

Array.new(

5 ) { rand( 100 ) }

=> [

55 , 69 , 5 , 68 , 54 ]

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Let's Code Let's Code E x ample s of Clos ure s E x ample s of Clos ure s

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E very one Conf used? E very one Conf used? GOOD! https:/ / github.com/ gantman/ eleGant

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THE END THE END * Applause *