超初心者向け勉強会 Lesson1-1

Swift言語を使って、定数と変数やアクセス修飾子について紹介しています。

Transcript

1. ఆ਺ͱม਺ʹ͍ͭͯ NPCJMF
   ੉ࢁࡷଠ
2. ໨త w ఆ਺ͱม਺ʹֶ͍ͭͯश
   w ΞΫηεम০ࢠʹֶ͍ͭͯश
   w ࢖͍ํΛ֮͑Δ
3. ϦϙδτϦ w 4XJGU,JOEFSHBSUFO4XJGU,JOEFSHBSUFO -FTTPO-FTTPO@
4. ఆ਺ͱ͸ w ఆ·ͬͨ஋
   w ͭ·ΓϓϩάϥϜ࣮ߦத͸มΘΒͳ͍ ෼ DN ճ ࣌ؒ N ݸਓతͳᮢ஋
5. ม਺ͱ͸ w ঢ়گʹԠͯ͡มΘΓ͑Δ஋
   w ϓϩάϥϜ࣮ߦதʹ࠶୅ೖ͕Մೳ  ࡀ ϋοϐʔ εϚϗͷॆి ೥ྸ ؾ෼  ࡀ ௒ϋοϐʔ
6. ϓϩάϥϜʹͯ͠ΈΔͱ let constText1: String = "ఆ਺" // ఆ਺ͳͷͰ࠶୅ೖͰ͖ͳ͍ var varText1: String = "ม਺" // ม਺ͳͷͰ࠶୅ೖͰ͖Δ varText1 = "NEW ม਺" એݴ͢Δͱ͖ʹMFU΍WBSΩʔϫʔυΛ͚ͭΔ͜ͱͰɺ
   ఆ਺΍ม਺ΛએݴͰ͖Δɻ
7. ࢖͍ॴ
   ؔ਺಺ func summary1(priceList: [Double]) -> String { // ϩʔΧϧఆ਺ʢෆมͷύϥϝʔλʣ let localTaxRate = 0.10 // 10%ͷফඅ੫ let localCurrency = "¥" // දࣔ༻ͷ௨՟ه߸ // ϩʔΧϧม਺ʢܭࢉաఔͰ஋͕มΘΔʣ var subtotal = 0.0 priceList.forEach { subtotal += $0 } let tax = subtotal * localTaxRate let total = subtotal + tax return "\(subtotal) + ੫\(tax) = \(localCurrency)\(total)" }
8. ࢖͍ॴ
   Ϋϥε಺ class ShoppingCart { // ϝϯόఆ਺ private let taxRate: Double = 0.10 private let currency: String = "¥" // ϝϯόม਺ private var items: [Double] = [] func addItem(price: Double) { ɾɾɾ } func summary2() -> String { ɾɾɾ } } let cart = ShoppingCart() cart.addItem(price: 1000) print(cart.summary2())
9. TFZBNBTBOతʹ w ؔ਺಺ʹએݴ͢ΔϩʔΧϧม਺ͳͲ͸ɺݶఆతͳॲཧʹ࢖͍͍ͨͱ͖
   w Ϋϥε಺Ͱએݴ͢Δϝϯόม਺ͳͲ͸ɺ൚༻తͳॲཧʹ࢖͍͍ͨͱ͖
   w ઌఔͷྫ͸ɺϝϯόม਺ʹͨ͠ํ͕͍͍
10. ͜ΕԿʁ private let taxRate: Double = 0.10 private var items: [Double] = [] ΞΫηεम০ࢠͰ͢ʂ
11. ΞΫηεम০ࢠͱ͸ w ؔ਺΍ม਺ʹΞΫηε͢ΔൣғΛࢦఆ͢Δ΋ͷ
    w Ͳ͔͜ΒͰ΋ΞΫηεͰ͖ͯ͠·͏ͱɺҙਤ͠ͳ͍ڍಈͱͳΔڪΕ͕͋Δ
    w ಛʹ։ൃʹؔΘΔਓ਺͕૿͑ͯ͘Δͱ QSJWBUF
    WBS
    ຊ໊
    4USJOH
    
    TFZBNBTBO
    ຊ໊೷͖ݟ ࣗ෼ ଞਓ ݱ࣮Ͱ༑ୡʹͳͬͯɺ
    ໊લ͸Կʁؔ਺͕
    ݺ͹ΕͨΒڭ͑ͯ͋͛Δɻ
12. ΞΫηεम০ࢠͷछྨ छྨ ҙຯ JOUFSOBM ಉ͡Ϟδϡʔϧ಺ͳΒ
    ΞΫηεͰ͖Δɻ QSJWBUF Ϋϥε಺͔ΒͷΈ
    ΞΫηεͰ͖Δɻ ˞Ұ෦ׂѪ
13. ·ͱΊ w ఆ਺͸ఆ·ͬͨ஋Ͱɺม਺͸มΘΔ஋
    w มΘΔ΋ͷ͔ɺมΘΒͳ͍΋ͷ͔ݟۃΊͯએݴ͠Α͏
    w ࢖͍͍ͨൣғΛߟ͑ͯએݴ͠Α͏
    w JOUFSOBM͸ಉϞδϡʔϧͳΒΞΫηεͰ͖Δ
    w QSJWBUF͸Ϋϥε಺͔ΒͷΈΞΫηεͰ͖Δ
    w ؆୯ʹॻ͖มΘͬͯ͸͍͚ͳ͍
    w Ϋϥε֎͔Βݺͼग़͞Εͨ͘ͳ͍