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Here, the buffer array is used to store the data read by read(2) until it's written; then the buffer is re-used. There are more complicated buffer schemes used, for example a circular buffer, where some finite number of buffers are used, one after the next; once the buffers are all full, the index "wraps around" so that the first one is re-used.
I have a JSON object and I'm converting it to a Buffer and doing some process here. Later I want to convert the same buffer data to convert to valid JSON object. I'm working on Node V6.9.1. Below is the code I tried but I'm getting [object object] when I convert back to JSON and cannot open this object. var obj = {. key:'value',
In the Python documentation about buffer(), the description is: The object argument must be an object that supports the buffer call interface (such as strings, arrays, and buffers). A new buffer object will be created which references the object argument. The buffer object will be a slice from the beginning of object (or from the specified offset).
而 buffer 的主要目的进行流量整形，把突发的大数量较小规模的 I/O 整理成平稳的小数量较大规模的 I/O，以**减少响应次数**（比如从网上下电影，你不能下一点点数据就写一下硬盘，而是积攒一定量的数据以后一整块一起写，不然硬盘都要被你玩坏了）。
In older versions, node.js has both ArrayBuffer as part of v8, but the Buffer class provides a more flexible API. In order to read or write to an ArrayBuffer, you only need to create a view and copy across. From Buffer to ArrayBuffer: function toArrayBuffer(buffer) {. const arrayBuffer = new ArrayBuffer(buffer.length);
In TypeScript I had to import Buffer explicitly. import { Buffer } from "buffer"; I would have expected that the compiler would complain about Buffer being missing before the import and/or that "source.organizeImports": true would have removed the line when saving the file, but neither were true. @ehacinom's solution also worked.
fwrite(buffer, buffer_length, 1, stdout); This works because fwrite is not thought for printing just strings, but any kind of data, so it doesn't look for a terminating null character, but accepts the length of the data to be written as a parameter; null-terminate your buffer manually before printing:
A buffer overflow is basically when a crafted section (or buffer) of memory is written outside of its intended bounds. If an attacker can manage to make this happen from outside of a program it can cause security problems as it could potentially allow them to manipulate arbitrary memory locations, although many modern operating systems protect ...
The word buffer is used for many different things in computer science. In the more general sense, it is any piece of memory where data is stored temporarily until it is processed or copied to the final destination (or other buffer). As you hinted in the question there are many types of buffers, but as a broad grouping:
According to Wikipedia: In computing, a buffer is a region of memory used to temporarily hold data while it is being moved from one place to another. Typically, the data is stored in a buffer as it is retrieved from an input device (such as a keyboard) or just before it is sent to an output device (such as a printer).