:sig
function file_close(handle : u64)

:params
handle : handle returned by `file_open`

:content
`file_close` closes a handle from `file_open`. Close a handle after the final read or write.

:example capy render
var handle := file_open("/tmp/doc-close.txt", "w")
file_write(handle, "done")
file_close(handle)
print(file_get_contents("/tmp/doc-close.txt"), "\n")

:see-group
file-handles
