Catching return values from goroutines in Go. Channels A channel is a communication mechanism that lets one goroutine send values to another goroutine. Make a main.go file containing the following: package main import ( "fmt" "time" ) func ...

Understanding defer in Go. Deferred Function Calls A defer statement is an ordinary function or method call prefixed by the keyword defer. The function and argument expressions are evaluated when the statement is executed, but the actual call is def...

Golang bytes.Buffer Examples Examples of Golang bytes.Buffer The bytes package provides the Buffer type for efficient manipulation of byte slices. A Buffer starts out empty but grows as data of types like string, byte, and []byte are written to it. ...

Formatting float to currency string in Go. Using localized formatting Use golang.org/x/text/message to print using localized formatting for any language in the Unicode CLDR. Make a main.go file containing the following: package main import ( "...

Golang path and filepath Examples. Using filepath.Base The number is the index of the last slash in the string. If you want to get the file's base name, use filepath.Base: package main import ( "fmt" "path/filepath" ) func main() { path ...

Introduction to Strings in Go.What is a String? A string is an immutable sequence of bytes. Strings may contain arbitrary data, including bytes with value 0, but usually they contain human-readable text. Make a main.go file containing the following...

An example program using numbers. Integers And Floating Point Numbers Go has several different types to represent numbers. Generally we split numbers into two different kinds: integers and floating-point numbers. Make a main.go file containing the ...

In Python, using the __file__ is the easiest way to get name of current script. Using Module Attributes You can use __file__ to get the name of the current file. When used in the main module, this is the name of the script that was originally invoke...

In Golang, using the Sum256 function is the easiest way to get a SHA256 hash from a string.Go implements several hash functions in various crypto/* packages. Using Sum256 Function The sha256.Sum256() function returns the SHA256 checksum of the data...

In Golang, using the Sum function is the easiest way to get a MD5 hash from a string. Using Sum Function The md5.Sum() function returns the MD5 checksum of the data. The following example should cover whatever you are trying to do: package mai...

In PHP, using the $_SERVER variable is the easiest way to get the full URL. Using $_SERVER Variable $_SERVER is an array containing information such as headers, paths, and script locations. The following example should cover whatever you are trying...

In Python, using the os.chdir method is the easiest way to set the current working directory Using chdir Method The os.chdir(path) method changes the current working directory to path. For example, #!/usr/bin/python3 # Import module import os ...

In Python, there are 2 ways to delete the contents of a folder. Using rmtree Method The shutil.rmtree() method deletes an entire directory tree; path must point to a directory. For example, #!/usr/bin/python3 # Import module import os, shutil ...

In Golang, there are 2 ways to change the current directory. Using Dir Property Usually if you need a command to run from a specific directory, you can specify that as the Dir property on the Command, for example: package main import ( "os/...

In Golang, using the Readdirnames function is the easiest way to check if directory on path is empty. Using Readdirnames Function The file.Readdirnames(n int) function reads the contents of the directory associated with file and returns a slice of ...