Basic syntax of go language

The basic syntax of go defines variables

There are two ways to define variables in the go language: var, as follows

Var a = 1

Assign the a variable to 1 in the second way ": =", as follows:

A: = 1

As above, assign a variable to 1`Note: variable name: = variable value, this method is only applicable to the first assignment of a variable, if the variable has been assigned, such as the an above has been assigned to 1, at this time, if you want to re-assign a value in the use of a: = 2, you can change the assignment directly a = 2

Define the function:

There is no class keyword or class concept in the go language. Go is mainly a function-oriented and interface-oriented programming language.

Define the keyword func of the function, as follows:

Syntax: the content in [] is optional

Func function name ([parameter name] [parameter type]) [function return value type] {function specific logic [return] [returned content]}

Loop:

In go, there are only for loops and no other loops.

The basic way of writing:

For I: = 0; I = 10; iTunes + {loop body content}

4There is nothing wrong with it. Judge

1.if judgment:

If condition {processing logic} else {processing logic} switch and case judgment

Syntax: switch [variable name] {case condition 1: processing logic case condition 2: processing logic default: processing logic} the above method is a bit similar to case in shell

5. Slice slice

Define slice:

Variable name: = [length] type, as follows: define a slice of int type with length 10

Arr: = [10] int

Define a variable length slice:

Var arr1 = [...] Int {} or: arr: = [...] int {0Pert 1je 2jue 3jre 4jre 5jr 6jr 7}

Map type:

B: = make (map [string] string) c: = make (map [string] int) above is the definition of two map, one is bmeme c make is to open up memory space, the map keyword, [] is the key type, string and int are both value types