2017_10_07_kotlin_study - denlyou/AIL GitHub Wiki
Kotlin Language
Reference > Basic > Basic Types
http://kotlinlang.org/docs/reference/basic-types.html
μ½νλ¦° λ³μ μ μΈ
- var λ³μλͺ
: μλ£ν
- μμλ val
μλ£ν
- μ½νλ¦°μ μλ°μ κΈ°λ³Έμλ£ν(Primitive Type)μ΄ μ
μ΄ λͺ¨λ μ°Έμ‘°(κ°μ²΄)νμ
μ«μ(Numbers)
- μ μ : Long(64-bit), Int(32), Short(16), Byte(8)
- μ€μ : Double(64), Float(32)
Literal Constants
- μ μ
- μμ§μ(Decimals) : 123
- Longνμ
μ κ²½μ° μ«μ λ§μ§λ§μ
L
μ λΆμ : 123456789L
- 16μ§μ(Hexadecimals)μ κ²½μ° λ§¨μμ
0x
λ₯Ό λΆμ : 0x2202
- 2μ§μμ κ²½μ°μλ 맨μμ
0b
λ₯Ό λΆμ : 0b00001011
- 8μ§μλ μ§μνμ§ μμ
- μ€μ
- κΈ°λ³Έμ Doubleνμ
, Floatνμ
μ λ§μ§λ§μ
f
λ F
λ₯Ό λΆμ : 12.3, 12.3f
- μ§μννλ²μ λ§μ§λ§μ
e
λ₯Ό μ¬μ©ν΄ νν : 12.3e10
μΈλμ€μ½μ΄(_
) μ§μ (μ½νλ¦° 1.1 μ΄μμμ)
- μ«μμλ μν₯μ λ―ΈμΉμ§ μλλ€(μ«μ μ리μ ꡬλΆκ³Ό κ°μ μ©λλ‘ μ¬μ© κ°λ₯)
val oneMillion = 1_000_000
val creditCardNumber = 1234_5678_9012_3456L
val socialSecurityNumber = 999_99_9999L
val hexBytes = 0xFF_EC_DE_5E
val bytes = 0b11010010_01101001_10010100_10010010