Go learning notes 1.3- data types of variables

Data type of variable

One 、 Basic data type
1. Numerical type
1.1 Integer types
int int8 int16 int32 int64 uint uint8 uint16 uint32 uint64 byte
1.2 floating-point
folat32 folat64
1.3 Character （ There is no special character type , Usually use byte To save individual letters and characters ）
1.4 Boolean type true fasle
1.5 String type （string)
2. The derived | Complex data types
2.1 The pointer （pointer）
2.2 Array
2.3 Structure （struct）
2.4 The Conduit (channel)
2.5 function
2.6 section （slice）
2.7 Interface (interface)
2.8 map

Two 、 Detailed explanation of data types

1.1  Integer types 
int8:    A signed   8 An integer  (-128  To  127)
int16:   A signed  16 An integer  (-32768  To  32767)
int32:   A signed  32 An integer  (-2147483648  To  2147483647)
int64:   A signed  64 An integer  (-9223372036854775808  To  9223372036854775807)
uint8:   Unsigned   8 An integer  (0  To  255)
uint16:  Unsigned  16 An integer  (0  To  65535)
uint32:  Unsigned  32 An integer  (0  To  4294967295)
uint64:  Unsigned  64 An integer  (0  To  18446744073709551615)
byte:  uint8 Type alias for   Unsigned  8 An integer  (0  To  255)
1.2 floating-point ( Their arithmetical specifications are made by IEEE754 Floating point international standard definition , This floating-point specification is used by all modern CPU Support )
float32:  IEEE-754 32 Bit floating point number 
float64:  IEEE-754 64 Bit floating point number 
1.3 String type 
  String is an immutable sequence of bytes , Element of string cannot be modified （ Element cannot be changed , String variables can be reassigned ）, It's just a   Read byte array . So the length of the string is fixed , But unlike arrays , The string length is not part of the string type .
1.4 Boolean type  true fasle
2. Complex type  
 ..... Subsequent complement 

3、 ... and 、 Escape character

\b       Backspace 
\f       Change the page 
\n       Line break 
\r       enter 
\t       tabs 
\v       Vertical tabs 
\'       Single quotation marks  ( Only in  '\''  Formal rune Symbol face value )
\"       Double quotes  ( Only in  "..."  In the string face value of form )
\\       The backslash