Rust error handling is nice but obligatory. Which makes it sometimes plenty of code.
Functions return values of type Result that is "enumeration". In Rust enumeration means complex value that has alternatives and that alternative is shown with a tag.
Result is defined as Ok or Err. The definition is generic, and both alternatives have
| """A couple of very simple utilities for reading and writing files | |
| that contain multiple JSON values. Could be useful in situations where | |
| you're generating a bunch of data for later processing and then, later, | |
| you want to read it in an element at a time. | |
| The json module doesn't really support streaming reads, though, so this | |
| is limited by that. If you need real streaming, you probably want to use | |
| something like ijson: | |
| http://pypi.python.org/pypi/ijson/ | |
| """ |