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← Revision 5 as of 2025-10-10 15:11:03 ⇥
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| = Go Data Types = | ## page was renamed from Go/DataTypes = Go Numerics = Go offers several '''numerics''' defined by their size and behavior. |
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| == String == | == Description == |
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| A `string` is an immutable container of `uint8` bytes. They are meant to represent text encoded in UTF-8, but not every byte is guaranteed to be valid Unicode. There are only a few instances where strings are implicitly encoded: * in `for i, r := range s`, the `r` is a Unicode rune * in `rs := []rune(s)`, `rs` is a string of Unicode runes In these cases, all invalid Unicode bytes are converted to `U+FFFD` (the replacement character). ---- == Bool == ---- == Numeric Types == |
The integer types are: |
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| * floating point numbers: `float32` and `float64` * complex numbers: `complex64` and `complex128` |
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| `byte` is an alias to `uint8`, and `rune` is an alias to `int32`. | There are also two floating point types defined by size: `float32` and `float64`. |
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| ---- | Lastly, there are two complex types defined by size: `complex64` and `complex128`. |
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== Pointer == ---- == Struct == ---- == Function == ---- == Container Types == * `array` * `slice` * `map` ---- == Channel == ---- == Interface == |
Note that `byte` is an alias to `uint8`, and `rune` is an alias to `int32`. |
Go Numerics
Go offers several numerics defined by their size and behavior.
Contents
Description
The integer types are:
signed integers: int8, int16, int32, int64, and int
unsigned integers: uint8, uint16, uint32, uint64, and uint
uintptr
There are also two floating point types defined by size: float32 and float64.
Lastly, there are two complex types defined by size: complex64 and complex128.
Note that byte is an alias to uint8, and rune is an alias to int32.