Go data type

One. Numeric type

1. Integer

1.1 unsigned integers: types that begin with u, representing positive integers and 0, Uint8,uint16,uint32,uint64

1.2 Signed integers: Int8,int16,int32,int64

1.3 According to the operating system Adaptive data type: Uint,int,intptr ( This is a common type )

For 32-bit systems

         Uint=uint32         Int=int32

UIntPtr is a 32-bit pointer to a 64-bit system

         Uint=uint64         Int=int64

UIntPtr is a 64-bit pointer

2. Floating-point numbers: According to the number of decimal points followed by

2.1 Single-precision floating-point number: float32

2.2 Double-precision floating-point number: float64

3. Imaginary numbers:

3.1 complex64

3.2 complex128

Two. String: (String)

(i) A number of important concepts

1. Use (double quotes "") or (') to describe

2. The escape character between the double quotes is escaped, and the escape character between the ' sign remains intact.

3. Consists of a single byte: A python-like list that can be manipulated with an index

(b) Operation of the string:

1. Ask for length

2. Get a character with an index

3. String merging

Three. Boolean type: (BOOL)

1. True/false

2. With: and/&&

Or: OR/| |

Non: NOT/!

3. None of the following can be used as a Boolean judgment after if. Null value: Nil 0 value: 0 null value: ""

Go data type