How to Get a Random Number Between a Float Range in Python
In Python, using the uniform function is the easiest way to get a random number between a float range.
Using uniform Method
The random.uniform(a, b) method returns a random floating point number N such that a
How to Generate a SHA256 HMAC Hash from a String in Go
In Golang, using the crypto/hmac library is the easiest way to generate a SHA256 HMAC Hash from a string.
In cryptography, an HMAC (hash-based message authentication code) is a specific type of message authentication code (MAC) involving a cryptograp...
How to Get a SHA256 Hash from a String in Go
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...
How to Get a MD5 Hash from a String in Go
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...
How to Get a List of All Subdirectories in the Current Directory in Python
In Python, there are 2 ways to get a list of all subdirectories in the current directory.
Using os.walk Function
The os.walk() method generates the file names in a directory tree by walking the tree either top-down or bottom-up.
The following examp...
How to Generate Random Integers Between 0 and 9 in Python
In Python, there are 3 ways to generate random integers between 0 and 9.
Using randrange Method
The random.randrange(start, stop[, step]) method returns a randomly selected element from range(start, stop, step). For example,
#!/usr/bin/python3
...
How to Generate a UUID in Go
In Golang, there are 4 ways to generate a uuid.
Using uuid Package
install
Use the following command to download the repository to the local file system.
install
go mod tidy
go get github.com/google/uuid
go install github.com...
How to List All Files of a Directory in Python
In Python, there are 3 ways to list all files of a directory.
Using os.listdir Method
Return a list containing the names of the entries in the directory given by path. The list is in arbitrary order, and does not include the special entries '.' and ...
How To Generate a Random String in Python
In Python, there are 3 ways to generate a random string.Using List Comprehension
List comprehensions provide a concise way to create lists. See the following example:
#!/usr/bin/python3
# -*- coding: utf8 -*-
# Import module
import random
impor...
How To Install Go in Linux
In Golang, there are 2 ways to install Go in Linux.Download Packages
Download packages for Windows 64-bit, macOS, Linux, and more.
Go install
Linux
Remove any previous Go installation by deleting the /usr/local/go folder (if it exists), then extr...
Hello World in Rust
In Rust, "Hello World!" is the first basic program.
Build and Run
In our main.rs, add the following code:
// main.rs
fn main() {
println!("Hello,世界,こんにちは,안녕하세요")
}
Hello,世界,こんにちは,안녕하세요
we can run our application by typing:
B...
How To Install Rust in Linux
In Rust, there are two ways to install rust in Linux.Running the following in your terminal
If you’re running macOS, Linux, or another Unix-like OS. To download Rustup and install Rust, run the following in your terminal, then follow the on-screen i...
How to generate a random string in Go
Creating Random Strings of a fixed length in Go.
Using rand.Int63 Function
Int63 returns a non-negative pseudo-random 63-bit integer as an int64 from the default Source.
package main
import (
"fmt"
"math/rand"
"time"
)
const letters = "a...
How to use of hash functions in PHP
How Hashing Function Works and its Syntax.
MD5 Function
The md5() calculates the md5 hash of a string. Returns the hash as a 32-character hexadecimal number.
$str = "Google";
// 8b36e9207c24c76e6719268e49201d94
echo md5($str);
// bool(true)
md...
How to use the curl command in Linux
command line tool and library for transferring data with URLs.
cURL (pronounced 'curl') is a computer software project providing a library (libcurl) and command-line tool (curl) for transferring data using various network protocols. The name ...