readfile

How do you read n bytes from a file and put them into a vector<uint8_t> using iterators?

由 半腔热情 提交于 2021-02-19 15:30:23
问题 Based on this this question: How to read a binary file into a vector of unsigned chars In the answer they have: std::vector<BYTE> readFile(const char* filename) { // open the file: std::basic_ifstream<BYTE> file(filename, std::ios::binary); // read the data: return std::vector<BYTE>((std::istreambuf_iterator<BYTE>(file)), std::istreambuf_iterator<BYTE>()); } Which reads the entire file into the vector. What I want to do is read (for example) 100 bytes at a time in the vector, then do stuff,

How do you read n bytes from a file and put them into a vector<uint8_t> using iterators?

由 喜你入骨 提交于 2021-02-19 15:25:07
问题 Based on this this question: How to read a binary file into a vector of unsigned chars In the answer they have: std::vector<BYTE> readFile(const char* filename) { // open the file: std::basic_ifstream<BYTE> file(filename, std::ios::binary); // read the data: return std::vector<BYTE>((std::istreambuf_iterator<BYTE>(file)), std::istreambuf_iterator<BYTE>()); } Which reads the entire file into the vector. What I want to do is read (for example) 100 bytes at a time in the vector, then do stuff,

How do you read n bytes from a file and put them into a vector<uint8_t> using iterators?

由 百般思念 提交于 2021-02-19 15:24:39
问题 Based on this this question: How to read a binary file into a vector of unsigned chars In the answer they have: std::vector<BYTE> readFile(const char* filename) { // open the file: std::basic_ifstream<BYTE> file(filename, std::ios::binary); // read the data: return std::vector<BYTE>((std::istreambuf_iterator<BYTE>(file)), std::istreambuf_iterator<BYTE>()); } Which reads the entire file into the vector. What I want to do is read (for example) 100 bytes at a time in the vector, then do stuff,

Fortran read mixed text and numbers

由 不打扰是莪最后的温柔 提交于 2021-02-19 03:44:04
问题 I am using Fortran 90 to read a file that contains data in the following format number# 125 var1= 2 var2= 1 var3: 4 . . . . number# 234 var1= 3 var2= 5 var3: 1 I tried the following command and works fine read (2,*) tempstr , my_param(1), tempstr , my_param(2), tempstr , my_param(3) Problem is when the numbers become larger and there is no space between string and number, i.e. the data looks as following: number# 125 var1= 2 var2=124 var3: 4 I tried read (2,512) my_param(1), my_param(2), my

How to read file in Java Script line by line from hardcoded path and name of the file?

由 女生的网名这么多〃 提交于 2021-02-08 12:09:42
问题 I would like to read file in Java Script. The best it would be to read line by line, but there is also possibility to read the whole file at once. Generally on the web there is quite a lot of implementations, but I would like to read a file in very simple way by entering, hardcoded path and file name in the Java Script code, not but any buttons or something like this. The pseudo code below: <!DOCTYPE html> <html> <body> <script type="text/javascript"> var file = FileReader("home/test.txt");/

Implementing a ReadFile with a timeout inducing too much CPU ussage

由 一个人想着一个人 提交于 2021-01-29 11:21:15
问题 I use kernel32.dll ReadFile to read the HID output of a connected device. I wanted to create a timeout because this call is a blocking method and if it hangs for any reason the main loop in my application also hangs. [DllImport("kernel32.dll", SetLastError = true)] static internal extern bool ReadFile(IntPtr hFile, [Out] byte[] lpBuffer, uint nNumberOfBytesToRead, out uint lpNumberOfBytesRead, IntPtr lpOverlapped); public static HidLibrary.HidDeviceData.ReadStatus FastReadWithTimeout(this

Python read .txt File -> list

由 ぃ、小莉子 提交于 2021-01-28 14:38:03
问题 I have a .txt File and I want to get the values in a list. The format of the txt file should be: value0,timestamp0 value1,timestamp1 ... ... ... In the end I want to get a list with [[value0,timestamp0],[value1,timestamp1],.....] I know it's easy to get these values by direction = [] for line in open(filename): direction,t = line.strip().split(',') direction = float(direction) t = long(t) direction.append([direction,t]) return direction But I have a big problem: When creating the data I

Reading the dynamic bitset written data from file cannot read the correct data

由 白昼怎懂夜的黑 提交于 2021-01-27 20:57:35
问题 So I have a vector which has three numbers. 65, 66, and 67. I am converting these numbers from int to binary and appending them in a string. the string becomes 100000110000101000011 (65, 66, 67 respectively). I am writing this data into a file through dynamic_bitset library. I have BitOperations class which does the reading and writing into file work. When I read the data from file instead of giving the above bits it gives me these 001100010100001000001 bits. Here is my BitOperations class:

How to read local files using HTML 5 FileReader? [duplicate]

由 被刻印的时光 ゝ 提交于 2021-01-21 04:43:46
问题 This question already has answers here : Javascript read file without using input (3 answers) Closed 3 years ago . Objective I am making an application, and I need to read a local file using JavaScript and HTML 5, without any <input> tags or user interaction whatsoever. What I tried On my research, I found two tutorials that are heavily cited in SO: https://www.html5rocks.com/en/tutorials/file/dndfiles/ http://blog.teamtreehouse.com/reading-files-using-the-html5-filereader-api However, there

How to read local files using HTML 5 FileReader? [duplicate]

由 喜你入骨 提交于 2021-01-21 04:42:26
问题 This question already has answers here : Javascript read file without using input (3 answers) Closed 3 years ago . Objective I am making an application, and I need to read a local file using JavaScript and HTML 5, without any <input> tags or user interaction whatsoever. What I tried On my research, I found two tutorials that are heavily cited in SO: https://www.html5rocks.com/en/tutorials/file/dndfiles/ http://blog.teamtreehouse.com/reading-files-using-the-html5-filereader-api However, there
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