byte

问题 Problem I need to convert two ints and a string of variable length to bytes. What I did I converted each data type into a byte array and then added them into a byte buffer. Of which right after that I will copy that buffer to one byte array, as shown below. byte[] nameByteArray = cityName.getBytes(); byte[] xByteArray = ByteBuffer.allocate(4).putInt(x).array(); byte[] yByteArray = ByteBuffer.allocate(4).putInt(y).array(); ByteBuffer byteBuffer = ByteBuffer.allocate(nameByteArray.length +

问题 Problem I need to convert two ints and a string of variable length to bytes. What I did I converted each data type into a byte array and then added them into a byte buffer. Of which right after that I will copy that buffer to one byte array, as shown below. byte[] nameByteArray = cityName.getBytes(); byte[] xByteArray = ByteBuffer.allocate(4).putInt(x).array(); byte[] yByteArray = ByteBuffer.allocate(4).putInt(y).array(); ByteBuffer byteBuffer = ByteBuffer.allocate(nameByteArray.length +

问题 How do I convert an int to two bytes in C#? 回答1: Assuming you just want the low bytes: byte b0 = (byte)i, b1 = (byte)(i>>8); However, since 'int' is 'Int32' that leaves 2 more bytes uncaptured. 回答2: You can use BitConverter.GetBytes to get the bytes comprising an Int32. There will be 4 bytes in the result, however, not 2. 回答3: Another way to do it, although not as slick as other methods: Int32 i = 38633; byte b0 = (byte)(i % 256); byte b1 = (byte)(i / 256); 回答4: Is it an int16? Int16 i = 7;

问题 -- I'm loading test data into my SQL Server Database using python and was able to successfully take images and break them down into bytes and store them in the database, but when trying to fetch back the bytes and decode it to save it as a new file type, all i get is a blank image file. Not sure what i am doing wrong here... -- I've tried several iterations using base64 from other tutorials and similar questions, but cant seem to find one that will solve my problem. SQLCommand = ("SELECT

问题 -- I'm loading test data into my SQL Server Database using python and was able to successfully take images and break them down into bytes and store them in the database, but when trying to fetch back the bytes and decode it to save it as a new file type, all i get is a blank image file. Not sure what i am doing wrong here... -- I've tried several iterations using base64 from other tutorials and similar questions, but cant seem to find one that will solve my problem. SQLCommand = ("SELECT

问题 Hi I am trying to write a dataframe to my sql database using df.to_sql however I am getting the error message: TypeError: cannot use a string pattern on a bytes-like object. I am using Python 3. I am using a path on my drive which I can unfortuantly not share. But it works fine when I just want to open the csv file using. df = pd.read_csv(path, delimiter=';', engine='python', low_memory=True, encoding='utf-8-sig') I am using the encoding item because otherwise their is a strange object at my

问题 For example, t = str.encode(msg) print(t) I am getting the double slashes. b'\\xda\\xad\\x94\\xb4\\x0bg\\x92]R\\x9a1y\\x9d\\xed\\x04\\xd5\\x8e+\\x07\\xf8\\x03\\x1bm\\xd6\\x96\\x10\\xca80\\xe26\\x8a I would like to get the result as b'\xda\xad\x94\xb4\x0bg\x92]R\x9a1y\x9d\xed\x04\xd5\x8e+\x07\xf8\x03\x1bm\xd6\x96\x10\xca80\xe26\x8a' Any help would be appreciated. 回答1: You can't do that because '\\' represent a slash, not a double slash. For example, if you will convert the msg to a string and

问题 I have two numbers (going from 0-9) and I want to combine them into 1 byte. Number 1 would take bit 0-3 and Number 2 has bit 4-7. Example : I have number 3 and 4. 3 = 0011 and 4 is 0100. Result should be 0011 0100. How can I make a byte with these binary values? This is what I currently have : public Byte CombinePinDigit(int DigitA, int DigitB) { BitArray Digit1 = new BitArray(Convert.ToByte(DigitA)); BitArray Digit2 = new BitArray(Convert.ToByte(DigitB)); BitArray Combined = new BitArray(8);

问题 I getting a text input and writing it to a ble device. I don't have an issue for 1 Byte of data but I could not covert the text input value to 2 bytes and send it. How can I convert a value like 3400 to 2 bytes of UInt8 array and what should I for values below 255? For 1 byte I use: let myInt = Int(textField.text) let value: [UInt8] = [UInt8(myInt)] self.bluetoothManager.writeValue(data: Data(bytes: value), forCharacteristic: myChar!, type: .withResponse) I tried to convert like this but I

问题 I have a byte[] that I've read from a file, and I want to get an int from two bytes in it. Here's an example: byte[] bytes = new byte[] {(byte)0x00, (byte)0x2F, (byte)0x01, (byte)0x10, (byte)0x6F}; int value = bytes.getInt(2,4); //This method doesn't exist This should make value equal to 0x0110 , or 272 in decimal. But obviously, byte[].getInt() doesn't exist. How can I accomplish this task? The above array is just an example. Actual values are unknown to me. 回答1: You should just opt for the