byte

问题 As tilte, I tried to capture the file size info which is saved in 4 bytes of data from bitmap's file code, but if I use byte[] to save it and any byte of file exceeds 127, it'd be misjudged as negative values, in this case how could we correct these kind of values? My book just simply plus 256 to it, but could it fixedly be -128? if not, then the result still isn't correct. I know we can just use int[] or larger array for it, just wanna know how to deal with these kind of problems! Thanks a

问题 From bool[] to byte[]: Convert bool[] to byte[] But I need to convert a byte[] to a List where the first item in the list is the LSB. I tried the code below but when converting to bytes and back to bools again I have two totally different results...: public List<bool> Bits = new List<bool>(); public ToBools(byte[] values) { foreach (byte aByte in values) { for (int i = 0; i < 7; i++) { Bits.Add(aByte.GetBit(i)); } } } public static bool GetBit(this byte b, int index) { if (b == 0) return

问题 I'm trying to process streaming avro data from kafka using spark structured streaming (version-2.3.1), so i tried with this example to de-serialize. It works only if the topics value part contains StringType , but in my case the schema contains long and integers like below: public static final String USER_SCHEMA = "{" + "\"type\":\"record\"," + "\"name\":\"variables\"," + "\"fields\":[" + " { \"name\":\"time\", \"type\":\"long\" }," + " { \"name\":\"thnigId\", \"type\":\"string\" }," + " { \

问题 I am dealing with a program that consistently returns many byte objects. Frequently it returns the null b'00' in the middle of strings. I want to completely ignore that, (say if I were to make an array of these bytes). Is the only way to include a: if bytes != b'\x00': # Do something in every single loop / part of my code or is there a better way for me to skip those bytes? Bonus Question : When referring to situations such as this in Python 3, is a long "string" of bytes a "byte object",

问题 I am using Naudio and I have a stream which I need to read as array and then when I have found maximum I need to multiply each value with ( 1/ biggest ) and then I should have values in my array as [-1,1]. 回答1: I don't see really what you mean by "convert", but instead of the code you wrote you could just do: var bytes = stream.ToArray(); var biggest = (float)bytes.Max(); var floats = bytes.Select(b => b / biggest).ToArray(); This will result with floats between 0 and 1, since bytes are

问题 I'm trying to solve this problem: I have a byte value (1 byte) and I need to transform this value into a long value (8 bytes). But what I want is just replace the first byte of the long variable with the byte value I had before. A example: My Byte Value: 11001101 My Long Value: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 What I want: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 11001101 Simple as that! I'm trying to do this (example): byte b =

问题 I'm using Swift and trying to convert an Int (for example: -1333) to a byte array of 4 bytes. I was able to convert an Int to an array of 8 bytes (-1333 becomes [255, 255, 255, 255, 255, 255, 250, 203]), but I need it to be 4 bytes. I know that there are ways to do this in other languages like Java, but is there a way for Swift? Here's my code: (I used THIS answer) func createByteArray(originalValue: Int)->[UInt8]{ var result:[UInt8]=Array() var _number:Int = originalValue let mask_8Bit=0xFF

问题 A few moments ago I posted a question because I wasn't able to download a file using WWW() but now I've come to a new problem: The file that has to be downloaded is ~127mb in size. When I check the file that has been downloaded it shows 55mb. (Which explains why the file isn't able to be opened). The code I'm using to download the file: IEnumerator WaitForGame(){ WWW www = new WWW("https://www.dropbox.com/sh/aayo9iud7t98hgb/AACDqSST_-rT2jIfxq1Zc2SXa?dl=1"); Debug.Log ("Downloading"); yield

问题 I am want to take advantage of the web optimization for pdfs by allowing users to download them a page at a time. The pdfs are configured for fast web view. I am serving the pdfs from sql server 2008. The c# .net 3.5 web app untilises linq to SQL to load the files into a binary array from the database. The file is opended in PDF reader plugin on the client in IE. Any help or a shove in the right direction would be greatly appreciated. Thanks 回答1: If you simply want to send a PDF to the client

问题 Here's a couple of thoughts.I'm learning so there might be mistake(s) and even missing some basics. sizeof operator returns number of bytes. number of bits in byte is not constant value(correct me but it's number of bits char has). I want to know how many bits variable occupies, and sizeof won't tell me that without making assumptions about number of bits in char. So I came up with this piece of (probably unnecessary) code: #include <stdio.h> #include <math.h> #include <limits.h> int main