Programming

Programming

1. What is a programming language?

   • "A programming language is a special language programmers use to develop software programs(...) to execute." (Computer Hope, 2017)
     • According to Winnie (2016) they are different forms of programming depending of what you want to do. It all depends if you need to have acces to a computer processor or if you want to abstract the hardware into a more human language.
       • Forms of programming
         • Machine language
           • Allow programmers to code instructions directly to the processor.
             • Processors
               • Are programmed by sending sequences bits through the processor and enable actions.
             • Assembly language
               • Abstraction of machine language.
               • Uses codes when is needed to modify processors registers.
             • Quiker than
         • Interpreted language
           • First the programmer writes the code and then runs it.
             • Then an interpreter reads code
               • This is obviously way slower than machine language, but is actually more readable for humans. JavaScript is an example.
                 • Then interprets it into native instructions for the computer.
         • Compiled language
           • First a human sends a code to a compiler.
             • Way faster than
               • Then the compiler takes the program instructions and converts it to binary bytecode or native code for the hardware.
               • Then creates executable program.
                 • Executable program
                   • Can't be easily converted to the original program instructios.
           • C is an example
         • Objet-Oriented Programming
           • Treats everything as an object
             • Object
               • Store values.
               • Perform methods.
               • Accept and return values.
             • The object is defined using a class.
               • The programmer crates an instance of a class that has all the capacities defined by the class.
         • Functional programming
           • Not bound by an algorithm, it's more like a function in mathemathics.
           • First, you will take a value or object.
             • Then you will modify it with the ability to string multiple transformations together using functions.
         • Scripting languages
           • When an operating system needs to execute commands to configure servers, etc, you will use scrpting language
           • This language saves common commands as a script that can be run multiple times in multiple computers.