小编Vih*_*rma的帖子

我在我的代码中使用关键字auto

137       auto i = boost::find(adresses, adress);                            

在使用以下命令进行编译时,我会收到这些错误

[vickey@tb tests]$ clear;g++ testCoverDownloader.cpp ../CoverDownloader.cpp -I /usr/include/QtGui/ -I /usr/include/QtCore/ -lQtGui -lQtCore -std=c++0x

../CoverDownloader.cpp:137:10: error: ‘i’ does not name a type
../CoverDownloader.cpp:139:8: error: ‘i’ was not declared in this scope

使用-std = c ++ 0x应该已经完成​​了这个技巧.怎么了 ？

我爱我的键盘.在eclipse中编码(c ++)时,我会做一些语法错误.例如

std::String

它应该是std :: string.我一直在编写一些java程序:p.我正在寻找的是一种显示错误信息的方法

Type 'std::String' could not be resolved

使用一些键盘快捷键.而不是单击页面左侧显示的错误图标.我知道CNTRL +'+'和'.' .那我该怎么做？谢谢

我收到客户的帖子请求.这个请求包含一些我想要在服务器端分开的json数据.我使用httpcore创建了服务器.HttpRequestHandler用于处理请求.这是我认为可行的代码

    HttpEntity entity = ((HttpEntityEnclosingRequest)request).getEntity();

                    InputStream inputStream = entity.getContent();

                    String str = inputStream.toString();

                    System.out.println("Post contents: " + str);*/

但我似乎找不到使用HttpRequest对象获取请求正文的方法.如何从请求对象中提取主体？谢谢

我之前保存过断点列表

save breakpoints blist

现在编译程序后我尝试使用load命令重新加载相同的断点

load blist

我收到这个错误

You can't do that when your target is `exec'

怎么解决这个？

我试图在visual studio 2010中运行一个简单的GStreamer程序(http://gstreamer.freedesktop.org/data/doc/gstreamer/head/manual/html/chapter-helloworld.html).

我已经包含了库和其他所需的头文件.

现在程序编译但给我链接错误.

gstream.obj : error LNK2019: unresolved external symbol _gst_object_get_type referenced in function _main
gstream.obj : error LNK2019: unresolved external symbol _g_main_loop_run referenced in function _main
gstream.obj : error LNK2019: unresolved external symbol _gst_element_set_state referenced in function _main
gstream.obj : error LNK2019: unresolved external symbol _g_print referenced in function _main
gstream.obj : error LNK2019: unresolved external symbol _g_signal_connect_data referenced in function _main
gstream.obj : error LNK2019: unresolved external symbol _gst_element_link_many referenced in function _main
gstream.obj …

假设ExAMplE.java您当前目录中有一个文件,并且您正在使用vim编辑同一目录中的其他文件.我会从使用vim打开一个文件:e fileName,但由于该文件的名称都是蹩脚的,有没有办法让VIM编辑命令建议你文件的名称ExAMple.java,如果你只需要输入exam<tab>.

我有一个虚线分隔符

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="line">

    <!-- 
#17b851 #C7B299
     -->
    <stroke
       android:color="#9e9c85"
       android:dashWidth="10px"
       android:dashGap="10px" 
       />
</shape>

现在它几乎看不到.我怎样才能让它变厚.我尝试给android:height ="2px"和android:dashHeight ="5px",但它没有用.

我在我的应用程序中使用listfragment.当数据加载失败时,我使用失败消息调用setEmptyText.这在4英寸手机上运行良好,但在7英寸和10英寸手机上,空文本视图的大小非常小,难以阅读.

4英寸空文本视图

7英寸空文本视图

如何增加空文本视图的大小？

在创建google-service.json后运行示例时,应用程序在尝试在SignInActivity中获取数据库引用时崩溃

mDatabase = FirebaseDatabase.getInstance().getReference();

崩溃日志

05-21 09:27:27.644 488-488/com.google.firebase.quickstart.database D/AndroidRuntime: Shutting down VM
05-21 09:27:27.644 488-488/com.google.firebase.quickstart.database E/AndroidRuntime: FATAL EXCEPTION: main
                                                                                     Process: com.google.firebase.quickstart.database, PID: 488
                                                                                     java.lang.RuntimeException: Unable to start activity ComponentInfo{com.google.firebase.quickstart.database/com.google.firebase.quickstart.database.SignInActivity}: com.google.firebase.database.DatabaseException: Failed to get 

FirebaseDatabase instance: FirebaseApp object has no DatabaseURL in its FirebaseOptions object.
     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2325)
     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
     at android.app.ActivityThread.access$800(ActivityThread.java:151)
     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
     at android.os.Handler.dispatchMessage(Handler.java:102)
     at android.os.Looper.loop(Looper.java:135)
     at android.app.ActivityThread.main(ActivityThread.java:5254)
     at java.lang.reflect.Method.invoke(Native Method)
     at java.lang.reflect.Method.invoke(Method.java:372)
     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
  Caused by: com.google.firebase.database.DatabaseException: Failed to get FirebaseDatabase instance: FirebaseApp object has no DatabaseURL …

我有以下json

{
  "kind": "youtube#channelListResponse",
  "etag": "\"cbz3lIQ2N25AfwNr-BdxUVxJ_QY/QM4kW8nb-nymx1biZnF8bIvgOfE\"",
  "pageInfo": {
    "totalResults": 1,
    "resultsPerPage": 1
  },
  "items": [
    {
      "kind": "youtube#channel",
      "etag": "\"cbz3lIQ2N25AfwNr-BdxUVxJ_QY/y82-gQyDEMJUwKI8hgUfyTzHck8\"",
      "id": "UC_x5XG1OV2P6uZZ5FSM9Ttw",
      "snippet": {
        "title": "Google Developers",
        "description": "The Google Developers channel, offers lessons, talks, the latest news & best practices. Learn Android, Chrome,  Web Development, Polymer, Performance, iOS & more!\n\nTake advantage of this resource by subscribing to the official Google Developers channel here: https://www.youtube.com/channel/UC_x5XG1OV2P6uZZ5FSM9Ttw?sub_confirmation=1\n \nFollow Google Developers on Twitter: https://twitter.com/googledevs\n\nFollow Google Developers on Google+: https://plus.google.com/+GoogleDevelopers\n\nCheck out the Google Developers …