FastInput - Read input, fast!
FastInput is aimed to simplify reading of known input from stdin
,
mainly in a competetive programming environment. The crate exposes
the FastInput
struct which contains methods for reading and parsing
line-based input. FastInput
does no validation of the input and
uses unsafe operations and buffering to achieve great performance.
Example
The following example creates a new FastInput
and reads some input:
// The `next` method comes from the `FastParse` trait.
use ;
let input = new;
let first_line = input.next_line;
// Type arguments can often be omitted as rust is awesome,
// specified here for clarity.
let : = input.next;
println!;
// Read the next line and parse it.
let age: u32 = input.next_parsed;
// Read a line of integers and collect into a `Vec`
let numbers: = input.next_as_iter.collect;
// `FastInput` has implementations of `FastParse` up to quintuples.
let = input.next;
let sum: i32 = 0i32 + a + b + c + d + e;
// The `Str` type can be used to mix string slices with parsed data.
let : = input.next;
// `Str` can be dereferenced into its contained string slice.
let name: &str = *name;
// Read all remaining lines and print them
for line in input.lines