Files

I/O Operations in Gleam

Input and output are where a program meets the outside world. In Hello World you called io.println once; here we go further — formatting values for the console, writing to standard error, and reading …

I/O Operations in Go

Input and output are how a program talks to the outside world — the terminal, files, and other processes. Go handles I/O through a small set of well-designed packages built around simple interfaces ( …

I/O Operations in Groovy

Introduction

Input and output (I/O) is how a program talks to the outside world—printing to the terminal, reading what a user types, and persisting data to files. In your Hello World tutorial you saw …

I/O Operations in Hare

Input and output are where a systems language earns its keep. Hare handles I/O through a small set of standard library modules — fmt for formatted text, io for the low-level handle interface, os for …

I/O Operations in Eiffel

Input and output are how a program talks to the outside world - the console, the keyboard, and files on disk. In Hello World you already saw print and io.put_string. This tutorial goes further: …

I/O Operations in Elixir

Input and output are where a program meets the outside world—the terminal, files on disk, and other processes. Elixir treats I/O the way it treats everything else: as functions that transform data. …

I/O Operations in Erlang

Input and output are where a pure functional language meets the messy outside world. Erlang keeps its data immutable and its functions honest, but reading a keypress or writing a file is inherently a …

I/O Operations in Forth

Input and output in Forth follow the same rule as everything else in the language: I/O is performed by words that take their arguments from the data stack and leave their results there. There is no …

I/O Operations in Fortran

Input and output are where Fortran’s scientific heritage shines. The language was built to read numeric data, crunch it, and write results — so its I/O system offers precise, column-level …

I/O Operations in C#

Input and output are how a program talks to the outside world — printing results to the terminal, reading what a user types, and saving data to files so it survives after the program exits. You …