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Decimal numbers in Kotlin are: Float, Double
Looked at
1980
times
Decimal numbers in Kotlin are: Float, Double
last updated: 15 January 2025
Example:
Double
Kotlin
val
myPrice
:
Double
=
14.2
//
val
означает что
НЕ МОЖЕМ
менять переменную потом
var
myWeight
:
Double
=
65.3
//
var
означает что можем менять переменную потом
How much space do they take:
Type
min
...
max
value range
Amount of memory occupied
Example
Float
-3.4 * 10
38
... 3.4 * 10
38
Decimal precision: 7 digits
4 bytes
Kotlin
var
myPrice
:
Float
=
14.2f
Double
-1.8 * 10
308
... 1.8 * 10
308
decimal precision: 16 digits
8 bytes
Kotlin
var
myPrice
:
Double
=
14.2
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Integer numbers in Kotlin are: Byte, UByte, Short, UShort, Int, UInt, Long, ULong
Next topic →
A flag with values of true or false in Kotlin is: Boolean
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Объявления
Объявления
•
What is Kotlin?
•
Why is IntelliJ IDEA the most popular development environment for Kotlin?
•
Download and install IntelliJ IDEA to explore Kotlin
•
Create a new project in IntelliJ IDEA for study Kotlin
Int, Float, Boolean, Char ...
•
Integer numbers in Kotlin are: Byte, UByte, Short, UShort, Int, UInt, Long, ULong
•
Decimal numbers in Kotlin are: Float, Double
•
A flag with values of true or false in Kotlin is: Boolean
•
The symbol in Kotlin is: Char
•
Convert number to text in Kotlin | Int → String
String
•
The string, the text in Kotlin is: String
•
Interpolate strings in Kotlin. Example: val address:String = "${street}, ${country}"
•
What is the difference between String and StringBuilder ?
Enum
•
What is an enumeration (enum) in Kotlin ?
•
How do I find enum by value in Kotlin ?
Class
•
What is class in Kotlin? Example: class MyBook { ... }
•
lateinit is a late initialization for the class field | Kotlin
•
class that inherits from interface in Kotlin | Example: class MyBook : IBook { ...}
•
Unnamed class that inherits from interface in Kotlin | Example: val book1 = object : IBook { ...}
•
Generic, template class in Kotlin | Example: class MyBook<T> { ... }
Collections and Arrays
•
Create collections list, set, map and an array array in Kotlin
null
•
null value, use the symbol ? and ?. and !! and ?: and !!. and ?. in Kotlin
Lambda function
•
Lambda function in Kotlin. Example 1: var myFunc1 : (a:Int, b:Int) -> Int = { p1, p2 -> p1 + p2 };
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