小编Sta*_*ser的帖子

我已经设置了一个新的数据库,用于在PostgreSQL中安装Discourse.当我运行rake db:migrate时,它会创建大多数表,但它会失败:

-- execute("INSERT INTO archetypes (name_key, created_at, updated_at) VALUES ('poll', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP)")
   -> 0.0009s
-- add_column(:forum_threads, :archetype_id, :integer, {:default=>1, :null=>false})
   -> 0.0209s
==  CreateArchetypes: migrated (0.0424s) ======================================

==  AddMetaDataToForumThreads: migrating ======================================
-- execute("CREATE EXTENSION IF NOT EXISTS hstore")
rake aborted!
An error has occurred, this and all later migrations canceled:

PG::Error: ERROR:  could not open extension control file "/usr/share/postgresql/9.1/extension/hstore.control": No such file or directory
: CREATE EXTENSION IF NOT EXISTS hstore
/usr/local/rvm/gems/ruby-1.9.3-p385/bundler/gems/MiniProfiler-d149f34fcdb6/Ruby/lib/patches/sql_patches.rb:155:in `exec'
/usr/local/rvm/gems/ruby-1.9.3-p385/bundler/gems/MiniProfiler-d149f34fcdb6/Ruby/lib/patches/sql_patches.rb:155:in `async_exec'
/usr/local/rvm/gems/ruby-1.9.3-p385/gems/activerecord-3.2.12/lib/active_record/connection_adapters/postgresql_adapter.rb:652:in `block in execute' …

我想从我的Meteor应用程序中禁用注册.我正在使用accounts-ui smartpackage.

我试过这个:

Accounts.config({
  var forbidClientAccountCreation = true;
})

但是我的app服务器崩溃了.我怎样才能解决这个问题？

这是使用一个通用的JS文件,不是一个用于客户端,一个用于服务器.

我在Google Play上发布了一个应用.我想更改应用的类别.评级和排名会怎样？只是想在我做之前清理一下.

我正在尝试创建一个循环的进度条(虽然它不再是一个酒吧了,不是吗？).在这个cricle周围有垂直于圆圈的细条.现在的问题是,我的代码不会产生均匀间距的条形.这是代码和结果的图像:

function MH5PB(canvasId,            //the id of the canvas to draw the pb on
                value,              //a float value, representing the progress(ex: 0.3444)
                background,         //the background color of the pb(ex: "#ffffff")
                circleBackground,   //the background color of the bars in the circles
                integerColor,       //the color of the outer circle(or the int circle)
                floatColor          //the color of the inner circle(or the float circle)
                )
{
    var canvas = document.getElementById(canvasId);
    var context = canvas.getContext("2d");
    var canvasWidth = canvas.width;
    var canvasHeight = canvas.height;
    var radius = …

我有一个Android设备,我想用它进行开发(USB调试).显然,Android Composite ADB InterfaceADT的USB驱动程序不支持.

然后我尝试从设备管理器中找到它的硬件ID:

USB\VID_0BB4&PID_0C03&REV_0255&MI_01
USB\VID_0BB4&PID_0C03&MI_01

并尝试添加条目android_winusb.inf.inf文件有这样的东西:

;Google Nexus (generic)
%SingleBootLoaderInterface% = USB_Install, USB\VID_18D1&PID_4EE0
%SingleAdbInterface%        = USB_Install, USB\VID_18D1&PID_4EE1
%CompositeAdbInterface%     = USB_Install, USB\VID_18D1&PID_4EE2
%CompositeAdbInterface%     = USB_Install, USB\VID_18D1&PID_4EE2&MI_01

如何将USB ID定义到.inf文件中？是什么SingleBootLoaderInterface,SingleAdbInterface和CompositeAdbInterface什么？

我有以下功能,从菜单按钮单击调用弹出窗口.它有一个关闭弹出窗口的确定按钮.但是onclick按下按钮时不会启动该功能.此外,我需要在按下后退按钮时关闭弹出窗口.

    LayoutInflater inflater = (LayoutInflater) MainActivity.this
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

    final PopupWindow pw = new PopupWindow(inflater.inflate(R.layout.about_popup, null, false),400,440, true);

    pw.showAtLocation(lv, Gravity.CENTER, 0, 0);
    View popupView=inflater.inflate(R.layout.about_popup, null, false);
    Button close = (Button) popupView.findViewById(R.id.okbutton);
    close.setOnClickListener(new OnClickListener() {

      public void onClick(View popupView) {
        pw.dismiss();
      }
    });

谢谢

我需要在User模型中选择第二个条目.

User.second没有工作,也没有User.2或User.two.

我正在尝试设置u第二个用户条目(u = User.2)

我有一个程序,根据文本文件中提供的文本进行各种计算.打印第二个条目后出现错误(第一个工作正常.)

文件中的条目被解析为列表:

['Castro, Starlin', 'CHC', '161', '666', '59', '163', '34', '2', '10']

然后我调用单个函数,它有四个参数.

singles = singles(float(line[5]),float(line[6]),float(line[7]),float(line[8]))
print "Singles: %s" % singles

功能如下:

def singles(a,b,c,d):
    # a = hits b = doubles c = triples d = homeruns
    # hits - (doubles + triples + homeruns)
    tmp1 = b + c + d
    return a - float(tmp1)

这适用于第一个条目:

['Machado, Manny', 'BAL', '156', '667', '88', '189', '51', '3', '14']

并且计算成功完成.但是,第二个无法完成:

Traceback (most recent call last):
  File "\\bhmfp\ian.carroll$\Intro to Computer Programming\Project 3\Project 3\main.py", …

是否可以使用JavaScript/jQuery将某个类添加到包含特定文本字符串的li中？

更新/新问题:如果li有另一个指定的类,我是否可以添加类,而不是检测li的内容？