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The go language is primarily used as a server-side development, targeting the development of "large software", suitable for many programmers to develop large-scale software together, and the development cycle of long-term support for cloud computing network services. The go language enables programmers to develop quickly, and it makes it easier for programmers to maintain and modify the software as it grows. It combines the efficiency of a traditional compiled language with the ease of use and expression of a scripting language.

There are two memory allocation mechanisms in Golang: New and make, which differ significantly from each other.

New:new (t) allocates a 0 value to the memory space of the type T, and returns its address, which is the value of a *t type. itself is a pointer. Can be used to initialize any type

Make: Returns a T type with an initial value (not 0), instead of *t, which can only be used to initialize: Slice,map and channel three types.

Contrast:

Scope of application: Make can only create built-in types (slice map channel), and new is memory-allocated for all types

Return value: New Returns a pointer, make returns a reference

Padding value: New fills 0 values, make fills non 0 values

Code:

Package Main

Import (

"FMT"

"Reflect"

)

Type Books struct {

Title,

Content,

Author string

}

Func Main () {

A: = new ([]int)

Fmt. Println (a)

The output &[],a itself is an address

B: = make ([]int, 1)

Fmt. Println (b)

The output [0],b itself is a slice object whose content defaults to 0

Book1: = new (Books)

Book1. title = "This is Book1 title"

Book1. Content = "This is Book1 content"

Book1. Author = "This is Book1 Author"

BOOK2: = books{"This was Book2 title", "This is the Book2 content", "This is Book2 author"}

Fmt. Println ("Book1:", Book1, ", Type:", reflect. TypeOf (Book1))

Book1: &{this is Book1 title This is Book1 content this is Book1 author}, Type: *main. Books

Fmt. Println ("Book2:", Book2, ", Type:", reflect. TypeOf (BOOK2))

Book2: {This was Book2 title this is BOOK2 content of this is Book2 author}, Type:main. Books

}

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