extending a class A extends B Both classes or both interfaces extends parent class’ already defined methods Also possible to override the methods ...
Posts tagged Self Study
CodeIgniter
Famous Framework using php MVC Model: interacts with database View: Presentation side Controller: Intermediary between model and view
Interface vs. Abstract class vs. Concrete class
uses “implements” to be implemented multiple interfaces can be implemented interface can extends only interface uses “extends” to be extended if ...
final
Variable Variable cannot be changed Method Method cannot be modified Class Nobody can extend this class That means, no body can override methods ...
super vs. this
super : used to access methods of the base class this : used to access methods of the current class The third line is printing “animal : eat” ...
http vs. https (and SSL)
transfer hypertext data port: 80 Secure called webpage and data But slower the transferring speed Port: 443 Encryption: Hiding what is sent from ...
Levenshtein Distance
Levenshtein distance (LD) is a measure of the similarity between two strings, and it is a minimum costs to transform a string to the other using ...
MySQL Basic Queries
Do not ever use lowercase letter for query It works, but it is hard to read Space, enter doesn’t affect to query You can use one query per line ...