Buffer的核心作用是用来缓冲，字面意思缓慢冲击。 比如你每秒要写100次硬盘，对系统冲击很大，浪费了大量时间忙着写处理，用个buffer缓冲区暂存起来，变成每秒要写10次硬盘，对系统 …

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, …

Jan 31, 2017 · 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 …

Jan 11, 2013 · I wrote a pretty simple function that downloads an image from a given URL, resize it and upload to S3 (using 'gm' and 'knox'), I have no idea if I'm doing the reading of a stream to …

Feb 22, 2009 · In this context, a buffer is a portion of memory set aside for a particular purpose, and a buffer overflow is what happens when a write operation into the buffer keeps going past …

PL/SQL: numeric or value error: character string buffer too small is due to the fact that you declare a string to be of a fixed length (say 20), and at some point in your code you assign it a value …

The buffer in this case is a sub-string, starting at position 6 with length 5, and it doesn't take extra storage space - it references a slice of the string. This isn't very useful for short strings like this, …

Note that Buffer.alloc () is also faster on the current Node.js versions than new Buffer (size).fill (0), which is what you would otherwise need to ensure zero-filling.

Dec 15, 2015 · Buffer is a piece of memory in which things are collected in order to process them as a whole when the buffer is full (or nearly full). A typical example is buffered output; here …

Create the buffer Write data to the buffer (binary junk, not zero-terminated) Get the written data as a char array (together with its length) Free the buffer What is the name of the class/function …