How to Compare if two Maps are Equal in Golang
Testing the equivalence of maps in Go.
reflect.DeepEqual Function
It first checks if both maps are nil, then it checks if they have the same length before finally checking to see if they have the same set of (key, value) pairs.
package main
impo...
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 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...
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...
How to Check if a String Contains Whitespace in Rust
In Rust, there are 2 ways to check if a string contains whitespace.
Using char::is_whitespace
char::is_whitespace returns true if the character has the Unicode White_Space property.
You can pass char::is_whitespace to .contains():
fn main() {
...
How to Check if Directory on Path is Empty in Go
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 ...
How to Check if a File is a Valid Image in Go
In Golang, there are 2 ways to check if a file is a valid image.
Using DetectContentType Function
The http.DetectContentType() function implements the algorithm described at https://mimesniff.spec.whatwg.org/ to determine the Content-Type of the gi...
How to Set Environment Variables in Python
In Python, using the os.environ variable is the easiest way to set environment variables
Using os.environ Variable
os.environ behaves like a python dictionary, so all the common dictionary operations can be performed. In addition to the get and set ...
How to Check If two Strings are Equal in a Case-Insensitive Manner in Go
In Golang, using the strings.EqualFold function is the easiest way to check if two strings are equal in a case-insensitive manner
Using strings.EqualFold Function
The strings.EqualFold() function reports whether s and t, interpreted as UTF-8 strings...
How to Find Out the Number of CPU's on a Local Machine in Go
In Golang, using the NumCPU function is the easiest way to find out the number of CPU's on a local machine.
Using runtime.NumCPU Function
The runtime.NumCPU() method returns the number of logical CPUs usable by the current process.
The set of avail...
How to check if a variable exists in Python
In Python, there are 3 ways to check if a variable exists.
Using locals Function
The locals() function returns the dictionary of the current local symbol table.
#!/usr/bin/python3
vName = 1
if 'vName' in locals():
print("exists")
exists
...
How to Determine if an Object is Iterable in Python
In Python, there are 2 ways to determine if an object is iterable.
Using Duck Typing
Duck typing is a concept related to dynamic typing, where the type or the class of an object is less important than the methods it defines. When you use duck typing...