Zig 0.17.0-dev (Split by item)

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peek

Returns the next n bytes from the stream, filling the buffer as necessary.

Invalidates previously returned values from peek.

Asserts that the Reader was initialized with a buffer capacity at least as big as n.

If there are fewer than n bytes left in the stream, error.EndOfStream is returned instead.

See also:

Reader.peek
pub fn peek(r: *Reader, n: usize) Error![]u8

File

lib/std/Io/Reader.zig:514

Code

pub fn peek(r: *Reader, n: usize) Error![]u8 {
    try r.fill(n);
    return r.buffer[r.seek..][0..n];
}