Golang syncMap

Golang full solution (a math problem)

In Golang, it is a concurrency-safe Map implementation that can safely read and write to a Map in multiple Goroutines.This article will provide a detailed introduction to Map creation, initialization, adding elements, deleting elements, traversal, and other operations, as well as provide corresponding sample code.

Creation and initialization of the

In Golang, you can use {}literal amountto create an empty . For example, the following is an example of creating and initializing a string to an integer:

// Create a string-to-integer
var m

// Initialize
("one", 1)
("two", 2)
("three", 3)

// Print
(func(key, value interface{}) bool {
    ("key: %s, value: %d\n", key, value)
    return true
})

In the above example, a string to integer , is created and the elements of the Map are initialized using the (key, value) method. Finally, use the () function to iterate through the elements of the Map and print the key and value of each element.

The added elements of the

In Golang, you can add elements to a string using the (key, value) method. For example, here is an example of adding a string to an integer:

// Create a string-to-integer
var m

// Initialize
("one", 1)
("two", 2)
("three", 3)

// Add an element to
("four", 4)

// Print
(func(key, value interface{}) bool {
    ("key: %s, value: %d\n", key, value)
    return true
})

In the above example, you create a String to Integer , and add elements to the Map using (key, value). Then add an element to the Map using (key, value). Finally, use the () function to iterate through the elements of the Map and print the key and value of each element.

The deletion element of the

In Golang, you can use the (key) function to remove elements from a string. For example, here's an example of deleting an element from a string to an integer:

// Create a string-to-integer
var m

// Initialize
("one", 1)
("two", 2)
("three", 3)

// Delete the element in
("two")

// print
(func(key, value interface{}) bool {
    ("key: %s, value: %d\n", key, value)
    return true
})

In the above example, you create a String to Integer , and use the (key, value) method to add elements to the Map. Then use the (key) function to remove an element from the Map. Finally, the () function is used to iterate through the elements of the Map and print the key and value of each element.

(math.) ergodic

In Golang, you can use the () function to iterate over the elements of a string. For example, here's an example of traversing a string to an integer:

// Create a string-to-integer
var m

// Initialize
("one", 1)
("two", 2)
("three", 3)

// Iterate over the elements in
(func(key, value interface{}) bool {
    ("key: %s, value: %d\n", key, value)
    return true
})

In the above example, a String to Integer , is created and elements are added to the Map using the (key, value) method. Then use the () function to iterate through the elements of the Map and print the key and value of each element.

summarize

This article describes the create, initialize, add, delete and traverse operations in Golang. Compared to a normal Map, it has the following advantages:

Concurrency Safe: Use to avoid data contention issues when reading and writing Map in multiple Goroutines.
Support for arbitrary types of key and value: In a traditional Map, key and value must be of a specific type, but you can support arbitrary types of key and value.
Auto-expansion: In traditional Map, when the number of elements in the Map exceeds the capacity, you need to manually expand the capacity. In traditional Map, when the number of elements in the Map exceeds the capacity, it needs to be expanded manually.

It is important to note that the following points should be taken into account when using this product:

The elements in are unordered.
The elements in are stored as interface types, so type assertion is required when reading the elements.
elements do not support concurrent access outside of the Range() function.

In short, it is a very practical concurrency-safe Map implementation in Golang, which is very convenient to use. We hope that this article can help readers understand the use and implementation of Golang more deeply.