小编Bar*_*zyk的帖子

我有mysql的问题.我试图执行这个:

echo "show databases" | mysql -B -N

但我得到了:

ERROR 1045 (28000): Access denied for user 'debian-sys-maint'@'localhost' (using password: YES)

但当我执行时:

/etc/init.d/mysql restart 

我得到了'好'.

我做到了

GRANT ALL PRIVILEGES on *.* TO debian-sys-maint@localhost IDENTIFIED BY PASSWORD 'your password' WITH GRANT OPTION; FLUSH PRIVILEGES;

密码来自哪里/etc/mysql/debian.cnf.但它没有帮助.(当然我刷新了priv并重新启动了mysql).

我对angular 6执行了更新.在ng serve -o期间,我收到了sass-loader期望node-sass的错误.运行服务后-o我收到:

ERROR in ./src/sass/styles.scss (./node_modules/raw-loader!./node_modules/postcss-loader/lib??embedded!./node_modules/sass-loader/lib/loader.js??ref--14-3!./src/sass/styles.scss)
    Module build failed: Error: `sass-loader` requires `node-sass` >=4. Please install a compatible version.
    at Object.sassLoader (node_modules\sass-loader\lib\loader.js:31:19)
ERROR in ./src/app/app.component.scss
Module build failed: Error: `sass-loader` requires `node-sass` >=4. Please install a compatible version.
    at Object.sassLoader (node_modules\sass-loader\lib\loader.js:31:19)
ERROR in x.component.scss
Module build failed: Error: `sass-loader` requires `node-sass` >=4. Please install a compatible version.
    at Object.sassLoader (\node_modules\sass-loader\lib\loader.js:31:19)
ERROR in x.component.scss
Module build failed: Error: `sass-loader` requires `node-sass` >=4. Please install a compatible version.
    at Object.sassLoader …

我在test.py中编写了这个简单的代码(在python中).我尝试运行timeit,我没有任何错误,但我没有得到任何有关运行时间的信息.你能帮助我吗 ？

import timeit

def functionsWhile():
    "Desc about function"
    lic = 0
    n = 30000
    while lic<= n:
            lic += 1
    #print "test"
    return lic

t = timeit.Timer("functionsWhile()", "from __main__ import functionsWhile")

try:
    t.repeat(3, 2)
except:
    t.print_exc()

我期待一个结果如(例子):

$>python test.py
[0.006793975830078125, 0.006793975830078125, 0.006793975830078125]
$>

但我只有:

$>python test.py
$>

我没有timeit的结果.我使用python 2.7和linux.

我有使用Regex准备String的问题.我写了这个函数:

    private String parseAnswer(String res)
    {
        String[] pattern = new String[16] { "<head[^>]*?>.*?</head>", "<style[^>]*?>.*?</style>", "<script[^>]*?.*?</script>", "<object[^>]*?.*?</object>", "<embed[^>]*?.*?</embed>", "<applet[^>]*?.*?</applet>", "<noframes[^>]*?.*?</noframes>", "<noscript[^>]*?.*?</noscript>", "<noembed[^>]*?.*?</noembed>", "</?((address)|(blockquote)|(center)|(del))", "</?((div)|(h[1-9])|(ins)|(isindex)|(p)|(pre))", "</?((dir)|(dl)|(dt)|(dd)|(li)|(menu)|(ol)|(ul))", "</?((table)|(th)|(td)|(caption))", "</?((form)|(button)|(fieldset)|(legend)|(input))", "</?((label)|(select)|(optgroup)|(option)|(textarea))", "</?((frameset)|(frame)|(iframe))" };
        String[] replacement = new String[16] { " ", " ", " ", " ", " ", " ", " ", " ", " ", "\n$0", "\n$0", "\n$0", "\n$0", "\n$0", "\n$0", "\n$0" };

        for (int i = 0; i < pattern.Length; i++)
        {
            res = Regex.Replace(res, pattern[i], replacement[i]);
        }

        return res;
    } …