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bytes2hex

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

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

Examples

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])
"12ab34ff"

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)
   "48656c6c6f"

2. Convert byte array of random numbers to hexadecimal:

   julia> random_bytes = [0x9F, 0x2C, 0x71, 0x5B, 0xE9];
   julia> bytes2hex(random_bytes)
   "9f2c715be9"

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

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