bytes2hex(bin_arr::Array{UInt8, 1})

Convert an array of bytes to its hexadecimal representation. All characters are in lower-case. Returns an ASCIIString.


In the Julia programming language, the function bytes2hex(bin_arr::Array{UInt8, 1}) is used to convert an array of bytes to its hexadecimal representation. The resulting hexadecimal string will have all characters in lowercase. The function returns an ASCIIString.

julia> bytes2hex([0x12, 0xAB, 0x34, 0xFF])

Here are some common examples of its use:

  1. Convert binary data to hexadecimal representation:

    julia> binary_data = [0x48, 0x65, 0x6C, 0x6C, 0x6F];  # [72, 101, 108, 108, 111]
    julia> bytes2hex(binary_data)
  2. Convert byte array of random numbers to hexadecimal:

    julia> random_bytes = [0x9F, 0x2C, 0x71, 0x5B, 0xE9];
    julia> bytes2hex(random_bytes)
  3. Handle empty byte array:

    julia> empty_bytes = UInt8[];
    julia> bytes2hex(empty_bytes)

    When an empty byte array is passed, the function returns an empty string.

Common mistake example:

julia> bytes2hex([0xFF, 0x100])
ERROR: OverflowError: UInt8(256) is outside the range of representable values of type UInt8

In this example, an element in the bin_arr array exceeds the valid range of UInt8 type. Ensure that all elements in the array are within the valid range (0-255) before using bytes2hex.

See Also

base, big, bytes2hex, cconvert, complex, convert, dec, hex, hex2bytes, hex2num, oct, oftype, parse, promote, signed, unsafe_convert, unsigned, widen,

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