FileWriter

Mojo struct 🡭

FileWriter

@memory_only
struct FileWriter

Writer that writes to plain files.

Example:
    ```mojo
    from blazeseq.io.buffered import buffered_writer_for_file
    from std.pathlib import Path
    from std.collections.string import String
    var writer = buffered_writer_for_file(Path("out.fastq"))
    var data = List(String("@read1

ACGT + IIII “).as_bytes()) writer.write_bytes(data) writer.flush() ```

Fields

• handle (FileHandle)

Implemented traits

AnyType, ImplicitlyDestructible, Movable, WriterBackend

Methods

__init__

def __init__(out self, path: Path)

Initialize FileWriter with a file path.

Args:

• path (Path): Path to the output file.
• self (Self)

Returns:

Self

Raises:

Error: If the file cannot be opened for writing.

def __init__(out self, *, deinit take: Self)

Move constructor.

Args:

• take (Self)
• self (Self)

Returns:

Self

write_from_buffer

def write_from_buffer(mut self, mut buf: Span[Byte, MutExternalOrigin], amt: Int, pos: Int = 0) -> UInt64

Write bytes from buffer to file.

Args:

• self (Self)
• buf (Span)
• amt (Int)
• pos (Int)

Returns:

UInt64

Raises: