Intro scala for rubyists (ironhack)
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Ironhack Barcelona is a bootcamp teaching non programmers Ruby and javascript. In their meetup they invited me to introduce scala. Several non-ironhackers (senior and java background) signed up so this is a talk that's partly intro to scala for a junior from Ruby and some more generic advanced concepts.
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Intro scala for rubyists (ironhack)
- 1. Intro to scala Ignasi Marimon-Clos (@ignasi35) IronHack
- 4. @ignasi35 about me @ignasi35 1) problem solver, Garbage Collector, scala, java8 2) kayaker 3) under construction 4) all things JVM
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- 6. @ignasi35 ruby vs scala more similar than you think
- 7. @ignasi35 ruby vs scala √ Lambda + closures + currying √ Collection manipulation (via lambdas) √ traits (similar to modules) √ No monkey patching
- 13. @ignasi35 also: invoke scala from ruby !! mri v jvm
- 15. @ignasi35 teh codez https://gist.github.com/ignasi35/65f729a9a65aa6296933b100026a0fa1source code
- 16. @ignasi35 End of presentation
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- 30. @ignasi35 Types class PersonBuilder { Person build(String name, String surname) { … } }
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- 33. @ignasi35 Types class PersonBuilder { Person build(Name name, Surname surname) { … } }
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- 46. @ignasi35 Func Prog Pure Functions no side effects if not used, remove it fixed in — fixed out
- 48. @ignasi35 map f
- 53. @ignasi35 map f
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- 62. @ignasi35 Null Dealing class PersonBuilder { Person build(Name name, Option[Surname] surname) { … } }
- 63. @ignasi35 Maybe (aka Option) replaces null completely
- 64. @ignasi35 Maybe (aka Option) replaces null completely forever
- 65. @ignasi35 Maybe (aka Option) replaces null completely forever and ever
- 66. @ignasi35 Maybe (aka Option) replaces null completely forever and ever and ever
- 67. @ignasi35 Maybe (aka Option) replaces null completely forever and ever and ever and ever
- 68. @ignasi35 Maybe (aka Option) replaces null completely forever and ever and ever and ever and ever
- 69. @ignasi35 Maybe (aka Option) replaces null completely forever and ever and ever and ever and ever and ever
- 73. @ignasi35 Maybe (aka Option) filter: applies predicate and Returns input or None map: converts content fold: returns Some(content) or Some(zero) flatMap: see list get: returns content or throws Exception getOrElse: returns content or defaultValue
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- 84. @ignasi35 W T F ! ? ! ?
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- 97. @ignasi35 Conclusions Read teh bookz ! ! !
- 98. @ignasi35 Conclusions because there’s no One Tool To Rule Them All
- 102. @ignasi35 Conclusions but don’t let it clutter your code
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- 112. @ignasi35 Arigató
- 113. @ignasi35 Questions