我最近开始使用Android Studio.它默认使用这种大括号:
public void scanFile(String filePath) {
}
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我需要提交的代码需要设置如下样式:
public void scanFile(String filePath)
{
}
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我在哪里可以找到这个设置?
我有一个简单的线程,如下所示:
public class AwesomeRunnable extends Thread {
Handler thisHandler = null;
Handler uihandler = null;
String update = null;
long time = 0;
public AwesomeRunnable(Handler h, long howLong) {
uihandler = h;
time = howLong;
}
public void run() {
Looper.prepare();
thisHandler = new Handler();
...
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编辑:添加的代码,启动可运行
public class StartCycle implements Runnable {
@Override
public void run() {
pomodoroLeft = numPomodoro;
while(pomodoroLeft > 0) {
pomodoroLeft--;
actualSeconds = 6 * ONE_SECOND;
runnable = new AwesomeRunnable(myHandler, actualSeconds);
runnable.start();
waitForClock();
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它是主要活动的内在阶级.这个线程 …
我需要在ansible playbook中正确地转义单引号和双引号以设置环境变量.这些都不起作用:
- name: Set environment variable
command: >
export EXTRA_CONFIG=“'”{"client": {"subscriptions": ["DIND-Worker"], "cluster": "internal"}}“'”
- name: Set environment variable
command: >
export EXTRA_CONFIG=''{"client": {"subscriptions": ["DIND-Worker"], "cluster": "internal"}}''
- name: Set environment variable
command: >
export EXTRA_CONFIG=''{\"client\": {\"subscriptions\": [\"DIND-Worker\"], \"cluster\": \"internal\"}}''
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看着这个:
http://yaml.org/spec/current.html#id2532720
https://github.com/dotmaster/toYaml/issues/1
我得到的错误信息是:
fatal: [ip.address]: FAILED! => {"changed": false, "cmd": "export 'EXTRA_CONFIG={\"client\":' '{\"subscriptions\":' '[\"DIND-Worker\"],' '\"cluster\":' '\"internal\"}}'", "failed": true, "msg": "[Errno 2] No such file or directory", "rc": 2}
Run Code Online (Sandbox Code Playgroud) 这是一个简单的问题,但我真的被它搞砸了.我试图找到一个复制品,并用谷歌搜索它,但当我找不到令人满意的答案时,我更加惊讶.
import java.util.Scanner;
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在这个陈述中.Scanner是班级,
.util 是包的名称
什么是java或javax或一般第一期之前任何会站?
更新:
我也发现了这张照片:
http://www.javatpoint.com/package
这是真的吗?
我将游标初始化如下:
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//...Code, code, code...
c = db.query("US_States", null, null, null, null, null, null, null);
}
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游标本身在同一活动中的单独方法中使用:
public void GameStart()
{
int gameCount = 0;
while(gameCount < 5)
{
cursorEntry = new Random().nextInt(c.getCount());
c.moveToPosition(cursorEntry);
cursorState = c.getString(1);
cursorCapital = c.getString(2);
displayText.setText(cursorState);
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它给了我以下错误:
E/CursorWindow? Failed to read row 20, column 2 from a CursorWindow which has 50 rows, 2 columns.
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cursorCapital = c.getString(2);每次重新运行应用程序时,堆栈跟踪指向此行.它总是在那里出错.
数据库是这样的:
State|Capital
Alabama|Montgomery
Alaska|Juneau
Arizona|Phoenix
...The rest of the states
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我在SO上阅读了几篇类似的帖子,但他们没有让我知道出了什么问题.任何输入都表示赞赏.
我们有一个类似的问题Sidekiq schedule same worker to queue when done
问题的关键在于,如果将多个参数传递给perform_in it does not schedule them for later, but processes them as usual.
这按预期工作,但没有用,因为没有参数传递到新作业中
def perform(id, mode)
begin
Some::Process.remediate(App.find(id), mode)
rescue CustomErrors::MyError => e
# This will schedule a job, but without arguments :(
self.class.perform_in(2.hours)
end
end
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这很有用,但无法按预期工作 作业完成并且没有重新安排任何内容
def perform(id, mode)
begin
Some::Process.remediate(App.find(id), mode)
rescue CustomErrors::MyError => e
# This does not schedule a job
self.class.perform_in(2.hours, id, mode)
end
end
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用过的:
Sidekiq 3.5.1
Rails 4.2.4
ruby 2.3.1p112
dev environment …Run Code Online (Sandbox Code Playgroud) 我有这些用户:
postgres | Create role, Create DB | {cloudsqlsuperuser}
proxyuser | Create role, Create DB | {cloudsqlsuperuser}
qa|Create role, Create DB | {cloudsqlsuperuser}
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还有这些表:
List of relations
Schema | Name | Type | Owner
--------+--------------------+-------+-----------
public | member_preferences | table | proxyuser
public | message_queue | table | proxyuser
public | pubsub_queue | table | proxyuser
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我目前以 postgres 用户身份登录,并希望授予 qa 用户权限以读取和写入任何这些表以及将来在该模式中创建的任何表。
我试图遵循这一点。
但是,当我运行GRANT SELECT ON ALL TABLES IN SCHEMA public TO qa;
它时,
它会响应:
ERROR: permission denied …
我刚刚遇到for循环的奇怪行为,无法找到解释.
我有一个2D游戏,这个逻辑元素是一个领域.
//Declaration of the JPanel logical size.
private int[][] grid = new int[24][12];
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行数是24,对吧?
我用这个绘制这个网格:
for (int r = 0; r < grid.length; r++ )
for (int c = 0; c < grid[r].length; c++)
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然后我决定不画最后一行并做到这一点:
r < grid.length - 1;
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没啥事儿.我想也许我需要括号.我添加了它们仍然无法正常工作.然后我把它改成了
r < grid.length - 2;
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在这种情况下,最后一排没有按照我原来的要求绘制.
但现在我很困惑,因为数学上:grid.length - 2 = 22; r <22表示r(max)== 21,这意味着我应该有两行未绘制.我错过了什么?
class Action extends JPanel {
public static final int FRAME_SIZE_X = 370;
public static final int FRAME_SIZE_Y = 720;
private int[][] grid = …Run Code Online (Sandbox Code Playgroud) I want to add this tag from the branch 1.x to my project.
I specified: "monolog/monolog": "dev-1.x#1.23.0"
And ran composer update monolog/monolog
Composer says:
Problem 1
- The requested package monolog/monolog dev-1.x#1.23.0 exists as monolog/monolog[1.0.0, 1.0.0-RC1, 1.0.1, 1.0.2, 1.1.0, 1.10.0, 1.11.0, 1.12.0, 1.13.0, 1.13.1, 1.14.0, 1.15.0, 1.16.0, 1.17.0, 1.17.1, 1.17.2, 1.18.0, 1.18.1, 1.18.2, 1.19.0, 1.2.0, 1.2.1, 1.20.0, 1.21.0, 1.22.0, 1.22.1, 1.23.0, 1.3.0, 1.3.1, 1.4.0, 1.4.1, 1.5.0, 1.6.0, 1.7.0, 1.8.0, 1.9.0, 1.9.1, 1.x-dev, dev-master, 2.x-dev] but these are rejected by your …Run Code Online (Sandbox Code Playgroud) 出于某种原因,我无法将滚动窗格显示在小程序中.
public void init() {
JFrame frame = new JFrame();
JPanel panel = new JPanel();
JScrollPane scrPane = new JScrollPane(panel);
scrPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
scrPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
scrPane.setLayout(new ScrollPaneLayout());
frame.getContentPane().add(scrPane);
this.setVisible(true);
}
Run Code Online (Sandbox Code Playgroud) 我有 2 个非常长的串联数组:
["MyHashMap"
"remove"
"put"
"remove"]
[[]
[27]
[65,65]
[19]]
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我只是进入可视模式,y第二个数组,然后返回到第一行,转到它的末尾,添加空格并点击p。它变成:
["MyHashMap"
[[]
[27]
[65,65]
[19]]
"remove"
"put"
"remove"]
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我想要的输出是:
["MyHashMap" [[]
"remove" [27]
"put" [65,65]
"remove"] [19]]
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我怎样才能做到这一点?
是的,纯粹的理论问题.当我们从定义的类创建一个新对象时,我真的不清楚它到底发生了什么.
对于实例变量,每次创建新的内存位置似乎是合理的,因为它们可以具有不同的值.
但我曾经想过,每次将所有类的方法复制到新对象时,在内存方面都没有任何意义.那么java在方法调用期间实际上是使用类方法还是在新对象中创建相同方法的副本?