How to sort a vector in Rust
In Rust, there are 2 ways to sort a vector.
Using sort Method
The sort(&mut self) method sorts the slice. This sort is stable (i.e., does not reorder equal elements) and O(n * log(n)) worst-case. For example,
fn main() {
let mut v = [3, -5, ...
How to Check if a Slice Contains an Element in Go
In Golang, there are 2 ways to check if a slice contains an element.
Using contains Function
The following example should cover whatever you are trying to do:
package main
import "fmt"
func Contains[E comparable](s []E, v E) bool {
for _, ...
How to Check String is In Json Format in Go
In Golang, there are 2 ways to check string is in json format.
Using Unmarshal Function
The following example should cover whatever you are trying to do:
package main
import (
"encoding/json"
"fmt"
)
func isJson(s string) bool {
var js ...
How to Determine Whether a Given Integer is Between two Other Integers in Python
In Python, there are 2 ways to determine whether a given integer is between two other integers.
Using Comparisons
Unlike C, all comparison operations in Python have the same priority, which is lower than that of any arithmetic, shifting or bitwise o...
How to Delete a Character from a String in Python
In Python, there are 2 ways to delete a character from a string.
Using replace Method
The str.replace(old, new[, count]) method returns a copy of the string with all occurrences of substring old replaced by new. If the optional argument count is giv...
How to Make a List of Alphabet Characters in Python
In Python, there are 2 ways to make a list of alphabet characters.
Using string Module
The string.ascii_lowercase is a pre-initialized string used as string constant. In Python, string ascii_lowercase will give the lowercase letters ‘abcdefghijklmno...
How to Marshal / Unmarshal Json with a Custom Type Attribute in Go
In Golang, using the Unmarshal JSON function is the easiest way to Marshal / Unmarshal json with a custom type attribute.
JSON (JavaScript Object Notation) is a lightweight data-interchange format.
Using UnmarshalJSON Function
Example on custom Unm...
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 Extract All the Numbers Contained in a String in Python
In Python, there are 2 ways to extract all the numbers contained in a string.
Using List Comprehension
List comprehensions provide a concise way to create lists.
If you only want to extract only positive integers, try the following:
#!/usr/bin/...
How to Encrypt and Decrypt a String Using AES CBC in Go
In Golang, using the crypto/aes package is the easiest way to encrypt a string using AES CBC.
Ehrsam, Meyer, Smith and Tuchman invented the cipher block chaining (CBC) mode of operation in 1976. In CBC mode, each block of plaintext is XORed with the ...
How to Encrypt and Decrypt a String Using AES GCM 256 in Go
In Golang, using the crypto/aes package is the easiest way to encrypt a string using AES GCM 256.
In cryptography, Galois/Counter Mode (GCM) is a mode of operation for symmetric-key cryptographic block ciphers which is widely adopted for its performa...
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 Check if IP Address is in Private Network Space in Go
In Golang, using the IsPrivate function is the easiest way to check if IP address is in private network space.
Using IsPrivate Function
The IsPrivate() function reports whether ip is a private address, according to RFC 1918 (IPv4 addresses) and RFC...