class Zip64::CRC32Writer

• Zip64::CRC32Writer
• IO
• Reference
• Object

Overview

Computes the CRC32 checksum of bytes being written into it. Best used in combination with an IO::MultiWriter

Defined in:

Constructors

• .new

Instance Method Summary

• #read(slice : Bytes)

  Reads at most slice.size bytes from this IO into slice.

• #to_u32
• #write(slice : Bytes) : Nil

  Writes the contents of slice into this IO.

Constructor Detail

Instance Method Detail

io = IO::Memory.new "hello"
slice = Bytes.new(4)
io.read(slice) # => 4
slice          # => Bytes[104, 101, 108, 108]
io.read(slice) # => 1
slice          # => Bytes[111, 101, 108, 108]
io.read(slice) # => 0

io = IO::Memory.new
slice = Bytes.new(4) { |i| ('a'.ord + i).to_u8 }
io.write(slice)
io.to_s # => "abcd"