How to Count Characters in a String in Go
In Golang, there are 2 ways to count characters in a string.
Using RuneCountInString Function
Straight forward natively use the utf8.RuneCountInString()
The following example should cover whatever you are trying to do:
package main
import (
...
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...
How to Remove Duplicates in List in Python
In Python, there are 3 ways to remove duplicates in list.
Using Built-in set Function
The built-in set() function returns a new set object, optionally with elements taken from iterable. If you later need a real list again, you can similarly pass the...
How to Check If an Object Is of a Given Type in Python
In Python, there are 2 ways to check if an object is of a given type.
Using isinstance Method
The isinstance(object, classinfo) method returns True if the object argument is an instance of the classinfo argument, or of a (direct, indirect, or virtua...
How to Get the Class Name of an Instance in Python
In Python, there are 3 ways to get the class name of an instance.
Using type Method
The type(object) method returns the type of an object. For example,
#!/usr/bin/python3
class A:
pass
a = A()
name = type(a).__name__
print(name)
A
...
How to split a string into a slice in Go
Splitting a String into a Slice in Golang.Using strings.Split Function
Use the strings.Split function to split a string into its comma separated values.
package main
import (
"fmt"
"strings"
)
func main() {
s := "Japan,Germany"
// func S...
How to format a string in Python
Python String Formatting Best Practices.Fancier Output Formatting
To use formatted string literals, begin a string with f or F before the opening quotation mark or triple quotation mark. Inside this string, you can write a Python expression between {...
Built-in Types in Python
Python’s Core Data Types.Core Data Types
The principal built-in types are numerics, sequences, mappings, classes, instances and exceptions.
Built-in objects preview:
Object type:
Numbersint, float, complex.Strings'spam', "Bob's", b'a\x01c', u'sp\xc4m...
How to check if a string contains a substring in JavaScript
How do you check if a string contains a substring?.Using String.prototype.includes
The includes() method performs a case-sensitive search to determine whether one string may be found within another string, returning true or false as appropriate.
'Go...
How to check if string contains a substring in Go
Go test string contains substring.Using strings.Contains Function
How do I check if a string is a substring of another string in Go? Use the function Contains from the strings package.
Contains function returns a boolean value. It returns true if the...
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 ...
How to use the Docker-compose up command line
Create and start containers.Builds, (re)creates, starts, and attaches to containers for a service.
If you want to force Compose to stop and recreate all containers, use the --force-recreate flag.
Recreate containers
docker-compose up -...
How to use the Docker-compose exec command line
Execute a command in a running container.With this subcommand you can run arbitrary commands in your services. Commands are by default allocating a TTY, so you can use a command such as docker-compose exec web sh to get an interactive prompt.
...
How to install amCharts
amCharts is a maker for widely used JavaScript-based interactive charts and maps programming libraries and tools.--pname-- was written in TypeScript, it can be used in any JavaScript-compatible environment - TypeScript applications, React or Angular2...
How to install date-fns
Modern JavaScript date utility library.--pname-- provides the most comprehensive, yet simple and consistent toolset for manipulating JavaScript dates in a browser & Node.js.
--pname-- is like lodash for dates. It has 140+ functions for all occasions...