September 2018
Intermediate to advanced
398 pages
9h 43m
English
Content preview from Scala Programming Projects
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Refactoring SimulatePlanApp.strMain
We have implemented some building blocks for parsing the whole arguments array. It is now time to refactor SimulatePlanApp.strMain to call them. First, we need to check that the arguments array has the right size, as shown in the following code:
def strMain(args: Array[String]): Validated[String, String] = { if (args.length != 6) """Usage: |simulatePlan from,until nbOfYearsSaving nbOfYearsRetired netIncome currentExpenses initialCapital | |Example: |simulatePlan 1952.09,2017.09 25 40 3000 2000 10000 |""".stripMargin.invalid else { val allReturns = Returns.fromEquityAndInflationData( equities = EquityData.fromResource("sp500.tsv"), inflations = InflationData.fromResource("cpi.tsv")) val vFromUntil = parseFromUntil ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.