For the complete Mojo documentation index, see llms.txt. Markdown versions of all pages are available by appending .md to any URL (e.g. /docs/manual/basics.md).
file_descriptor
Higher level abstraction for file stream.
These are Mojo built-ins, so you don't need to import them.
For example, here's how to print to a file
var f = open("my_file.txt", "w")
var fd = FileDescriptor(f)
print("hello", file=fd)
f.close()
Structs
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FileDescriptor: File descriptor of a file.