Go-Packages
Repository with important go packages
File Handling
Package os:
- Create: Command to create files
- Write: Command to write data to file, for bytes[]
- WriteString: Command to write data to file, for string
- ReadFile: Command to read data to file
- Open: Command to open files
- Close: Command to close files
- Remove: Command to remove created files
Package bufio:
- NewReader: Command to to create a ReaderBuffer (to read the file in parts it is necessary to create a buffer: make([]byte, x))
- Read: Command to read the file by parts. (reader.Read(buffer))
HTTP Request
Package net/http:
- Get: Command to get type requests
- Post: Command to post type requests
- Handle: Command to handle routes in general
- HandleFunc: Command to handle routes from a function
- NewServeMux: Command to create create a route handler
- FileServer: Command to create directory of files
- NewRequest: Commando to create a request customizing
- Do: Command to execute a modified request
- Error: Command to show server-side errors
Package io:
- ReadAll: Command for general reading
- CopyBuffer: Command to copy a buffer to an output
Package context:
- Backgroud: Command to create a new context in background
- WithTimout: Command to configure time an existing context
- cancel: Command to cancel current context
- Done: Returns if the context has ended
- WithValue: Command to create a new context with value
- Value: Command to retrieve a value passed in context creation
JSON
Package encoding/json:
- Marshal: Command to convert a strutc to json
- NewEncoder: Command to convert a strutc to json, showing the result and or giving it to someone
- Unmarshal: Command to convert json to struct
TEMPLATE
Package text/templete:
- New: Command to create a new Template
- Parse: Command to parse templates
- ParseFiles: Command to parse multiple templates
- Execute: Command to process the template from a data source
- Must: Command to create and parse templates in a unified way
Database
Package database/sql:
- Open: Connects to the database, note: the corresponding database connection driver must be imported (github.com/go-sql-driver/mysql)
- Prepare: Prepares the slq instruction to be executed next, command used to prevent sql inject
- Close: Close the connection
- Stmt.Exec: Execute prepared slq statement
- Stmt.Query: Execute prepared slq statement, with return of a list of data
- Stmt.QueryRow: Execute prepared slq statement, with return one line of data
Package gorm.io/gorm:
- gorm.Open: Connects to the database, note: the corresponding database connection driver must be imported (gorm.io/driver/mysql)
- AutoMigrate: Command to create or update a table from a struct
- Create: Command to insert data to the database
- First: Select the first record
- Find: Search the records
- Limit: Limit return to x records
- Offset: Command to paginate the return of a query
- Where: Add a condition to the search
- Save: Save value changes
- Delete: Delete a record
- Preload: To load a model related to the search performed
- Model: Returns the data in the structure of the passed model
Workspaces
go work:
- init: Command that organizes local dependencies of the project, when they are not yet published Ex: (go work init ./folderPackage ./folderPackage1 ...)