What is coding? Next part 2.

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What is coding?..


What are Translators

Source code refers to code written in a particular programming language. More of this in Part 2.

Translators have the responsibility of converting your source code to the machine language. This is also known as binary. Remember ones and zeros. We may refer to the binaries as Object Code , the Program or a common word today: App.

Translators can be any of:

  • Interpreters
  • Compilers
  • A hybrid of Interpreters and Compilers
  • Assemblers

Interpreters

Some languages are interpreted. The translator processes the source code line by line and runs every line in the final program or app. This means that interpreted source code starts running until it encounters an error. Then the interpreter stops to report such errors. More of this in detail in Part 3.

Python is a good example of an interpreted programming language.

Compilers

Compilers function differently. They convert the source code in its entirety via a compilation process to binary. The binary is then executed. If there were errors in the source code, they are detected during the compilation time and flagged. This interrupts the compilation process, and no binary is generated.

Interpreters translate line by line and execute the line before going on to the next line. Compilers translate all lines of a program to a file (binary) and execute the whole file.

Remember the definition of computer program? It’s a sequence of instructions that is executed by a computer.

An executing program is usually called a process. Such programs use certain resources on the computer system or smartphone such as memory, disk space and the file system. An executing program can also be said to be running.

We use the word ‘run’ when we execute a computer program. The time it takes to run such programs is known as the run-time of the program.

It is common to see programs referred to as Apps. We also associate programs with the platforms or environment in which they run, or are designed for. There are web apps, which run on web browsers, such as Google Spreadsheet. There are mobile apps, which run on smartphones such as CandyCrush. There are also desktop apps such as the Evernote desktop app.

Again, interpreted source code is executed directly from the source file. Compiled source code is converted to a binary file. The binary file is then executed. Compiled source code may fail during run-time even after successfully compiling. .

               See part 3..


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