All Go Rust Python PHP JavaScript
Chrome Dev Summit to secure your spot in workshops, office hours and learning lounges!

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 _, ...
ada

How to Sort a Slice in Go

In Golang, using the sort.Slice function is the easiest way to sort a slice Using Slice Function You simply pass an anonymous function to the sort.Slice function: package main import ( "fmt" "sort" ) func main() { s := []string{"Houston...
Tomoki

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 ...
pooriabt

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...
Unused

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...
Patcher56

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...
aweis

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/...
Sambhav Khandelwal

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 ...
Tomoki

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...
Tomoki

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...
ada

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...
ada

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...
aweis

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...
aweis

How to check if a string contains a specific word in PHP

In PHP, there are 2 ways to check if a string contains a specific word. Using strpos Function The strpos(string $haystack, string $needle, int $offset = 0): int|false function finds the numeric position of the first occurrence of needle in the hayst...
ada

How to Convert a String to int in Rust

In Rust, using the parse method is the easiest way to convert a string to int. Using parse Method The str::parse::<T>() method parses this string slice into another type. For example, fn main() { let s = "100".to_string(); println!("{}"...
Tomoki