小编gre*_*owl的帖子

根据GNU Global 文档

# Installation of GLOBAL
# It assumed that ctags command is installed in '/usr/local/bin'.

$ ./configure --with-universal-ctags=/usr/local/bin/ctags
$ make
$ sudo make install

我需要安装GNU Global标志--with-universal-ctags=/usr/local/bin/ctags以支持universal-ctags.

正常安装GNU Global使用(根据此来源)

# normal installation
brew install global

因为酿造配方是形式的红宝石脚本(根据brew)

#Example with Wget
class Wget < Formula
  homepage "https://www.gnu.org/software/wget/"
  url "https://ftp.gnu.org/gnu/wget/wget-1.15.tar.gz"
  sha256 "52126be8cf1bddd7536886e74c053ad7d0ed2aa89b4b630f76785bac21695fcd"

  def install
    system "./configure", "--prefix=#{prefix}"
    system "make", "install"
  end
end

我应该这么做

# It assumed that ctags command is installed in …

Snippet正在尝试计算以下读取的字节数 sample.txt

为sample.txt

one two three four five six
seven eight nine ten eleven twelve
thirteen fourteen fifteen sixteen
%

情况1:

let file = File::open(fname)?;
let mut reader = BufReader::new(&file);
let mut buffer: Vec<u8> = vec![];
let num_bytes = reader.read_until(b'%', &mut buffer);
//println!("{}", String::from_utf8(buffer).unwrap());
println!("read_bytes: {}", num_bytes.unwrap());

read_bytes: 101

案例2:

let file = File::open(fname)?;
let mut reader = BufReader::new(&file);
let mut num_bytes: u32 = 0;
for readline in reader.lines() {
    if let Ok(line) = readline {
        //println!("{}", line);
        let bytes …