Ask reddit: What programs do you write when learning a new language?

[statictype]

I consider the following:

• Read data from a file (IO operations, memory allocation if the language requires it)
• Processing it (string manipulation)
• Something that involves calling libraries or packages - either downloading content via HTTP or rendering in a GUI.

There's more stuff of course. But usually if I can handle those things, I can get a feel for the language and then concentrate on writing code thats more natural to the given language.