byte

问题 I have a binary file that I would like to read with Fortran. The problem is that it was not written by Fortran, so it doesn't have the record length indicators. So the usual unformatted Fortran read won't work. I had a thought that I could be sneaky and read the file as a formatted file, byte-by-byte (or 4 bytes by 4 bytes, really) into a character array and then convert the contents of the characters into integers and floats via the transfer function or the dreaded equivalence statement. But

问题 I have a binary file that I would like to read with Fortran. The problem is that it was not written by Fortran, so it doesn't have the record length indicators. So the usual unformatted Fortran read won't work. I had a thought that I could be sneaky and read the file as a formatted file, byte-by-byte (or 4 bytes by 4 bytes, really) into a character array and then convert the contents of the characters into integers and floats via the transfer function or the dreaded equivalence statement. But

问题 I have a binary file that I would like to read with Fortran. The problem is that it was not written by Fortran, so it doesn't have the record length indicators. So the usual unformatted Fortran read won't work. I had a thought that I could be sneaky and read the file as a formatted file, byte-by-byte (or 4 bytes by 4 bytes, really) into a character array and then convert the contents of the characters into integers and floats via the transfer function or the dreaded equivalence statement. But

问题 This question already has answers here : Will a `char` always-always-always have 8 bits? (7 answers) Closed 4 years ago . As per I know that 1 char = 1 byte = 8 bits(32 bit system). char c=0xffff0000; //wrong then why char allow just 8 bits and also every character in a file also of 8 bit length. thanks. 回答1: No. The sizeof char is by definition 1. But this does not mean that it occupies 32-bits/8-bits always. $3.9.1/1- "Objects declared as characters (char) shall be large enough to store any

问题 I need to write effective and quick method to search byte array for given pattern. I write it this way, what do you think , how to improve? And it has one bug, it cannot return match with length 1. public static bool SearchByteByByte(byte[] bytes, byte[] pattern) { bool found = false; int matchedBytes = 0; for (int i = 0; i < bytes.Length; i++) { if (pattern[0] == bytes[i] && bytes.Length - i >= pattern.Length) { for (int j = 1; j < pattern.Length; j++) { if (bytes[i + j] == pattern[j]) {

问题 Anyone know how I would convert bytes which are sent via a websocket (from a C# app) to an image? I then want to draw the image on a canvas. I can see two ways of doing this: Somehow draw the image on the canvas in byte form without converting it. Convert the bytes to a base64 string somehow in javascript then draw. Here's my function which receives the bytes for drawing: function draw(imgData) { var img=new Image(); img.onload = function() { cxt.drawImage(img, 0, 0, canvas.width, canvas

问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: Convert integer into byte array (Java) I need to store the length of a buffer, in a byte array 4 bytes large. Pseudo code: private byte[] convertLengthToByte(byte[] myBuffer) { int length = myBuffer.length; byte[] byteLength = new byte[4]; //here is where I need to convert the int length to a byte array byteLength = length.toByteArray; return byteLength; } What would be the best way of accomplishing this?

问题 This is a Python 101 type question, but it had me baffled for a while when I tried to use a package that seemed to convert my string input into bytes. As you will see below I found the answer for myself, but I felt it was worth recording here because of the time it took me to unearth what was going on. It seems to be generic to Python 3, so I have not referred to the original package I was playing with; it does not seem to be an error (just that the particular package had a .tostring() method

问题 This is a Python 101 type question, but it had me baffled for a while when I tried to use a package that seemed to convert my string input into bytes. As you will see below I found the answer for myself, but I felt it was worth recording here because of the time it took me to unearth what was going on. It seems to be generic to Python 3, so I have not referred to the original package I was playing with; it does not seem to be an error (just that the particular package had a .tostring() method

问题 I don't understand why the lowest value a byte can take is -128 . I can see that the highest value is 127 , because it's 01111111 in binary, but how does one represent -128 with only 8 bits, one of which is used for the sign? Positive 128 would already be 8-bit, i.e. 10000000 , and then you would need a 9th bit to represent the negative sign. Could someone please help explain this to me. 回答1: The answer is two's complement. In short, Java (and most modern languages) do not represent signed