cursor | 易学教程

第十一章：持有对象

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Collection 　　List 　　　　ArrayList　　　　　　　　　　　　　　indexOf, contains, remove, removeAll都会用到equals方法　　　　　　subList所产生的列表幕后就是初始列表　　　　　　retainAll方法所产生的行为依赖于equals方法　　　　　　注：看源码ArrayList是通过数组（Object[] elementData）存储数据，有一个size属性（int size）表示集合元素个数，有两个常量int DEFAULT_CAPACITY=10和Object[] EMPTY_ELEMENTDATA = {} 当初始化时elementData=EMPTY_ELEMENTDATA，即空数组，父类AbstractList有modCount属性（int modCount = 0）表示修改次数。　　　　迭代器　　　　　　迭代器是一个对象，它的工作是遍历并选择序列中的对象，而客户端程序员不必知道或关心该序列底层的结构。Java的Iterator只能单向移动，这个Iterator只能用来：　　　　　　1）使用方法iterator()要求容器返回一个Iterator。Iterator将准备好返回序列的第一个元素。　　　　　　2）使用next()获得序列中的下一个元素。　　　　　　3）使用hasNext(

Why doesn't my cursor change to an Hourglass in my FindDialog in Delphi?

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问题 I am simply opening my FindDialog with: FindDialog.Execute; In my FindDialog.OnFind event, I want to change the cursor to an hourglass for searches through large files, which may take a few seconds. So in the OnFind event I do this: Screen.Cursor := crHourglass; (code that searches for the text and displays it) ... Screen.Cursor := crDefault; What happens is while searching for the text, the cursor properly changes to the hourglass (or rotating circle in Vista) and then back to the pointer

Change mouse cursor in Javascript or jQuery

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问题 How can I change the mouse cursor in Javascript or in jQuery ? I know it's a very classic question, but very strangely this JSFiddle doesn't work : http://jsfiddle.net/2Qffw/. Here is the code : $('body').css('cursor','pointer'); document.body.style.cursor = "pointer"; 回答1: Do it in both html and body : $('html,body').css('cursor','crosshair'); http://jsfiddle.net/2Qffw/3/ 回答2: It does work, but you had an empty body. http://jsfiddle.net/z6mhH/ HTML <body> asdasdasdasdads </body> JS document

How to move cursor back to the first line in C?

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问题 I am new to C and this is my code. #include<stdio.h> void printCard(char name, char symbol); int main() { printCard('J','*'); printCard('K','&'); } void printCard(char name, char symbol) { printf("-------------\n"); printf("| %c |\n",name); printf("| %c |\n",symbol); printf("| |\n"); printf("| |\n"); printf("| |\n"); printf("| %c |\n",symbol); printf("| %c |\n",name); printf("-------------\n"); } This is the output that I am getting. Is there a way to get that second card to appear beside the

Handling Cursor inside textbox

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问题 I had a cursorposition property in my viewmodel that decides the position of cursor in textbox on the view. How can i bind the cursorposition property to actual position of the cursor inside the textbox. 回答1: I'm afraid you can't... at least, not directly, since there is no "CursorPosition" property on the TextBox control. You could work around that issue by creating a DependencyProperty in code-behind, bound to the ViewModel, and handling the cursor position manually. Here is an example : //

SQL Server cursor - loop through multiple servers and execute query

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问题 I have the following code (cursor): DECLARE @SN VARCHAR(20); DECLARE @sql NVARCHAR(MAX); DECLARE C CURSOR LOCAL FAST_FORWARD FOR SELECT DISTINCT(SERVERNAME) FROM INSTALLATION where DATABASETYPE = 'MsSql' AND SERVERNAME IN ('x'); OPEN C; FETCH NEXT FROM C INTO @SN; WHILE (@@FETCH_STATUS = 0) BEGIN PRINT @SN; -- you could loop here for each database, if you'd define what that is SELECT name FROM master.dbo.sysdatabases WHERE name not in ('master','model','msdb','tempdb'); SET @sql = N'SELECT

Use the value of a string variable in SQL FOR-IN (SELECT) loop

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问题 I have an SQL procedure, that should execute a FOR-IN (SELECT ..) loop, where the SELECT content should vary depending on some input parameters. My idea was to store the SELECT string into a variable, and then try to extract the variable value in the FOR-IN loop but without success so far (earlier there was a fix SELECT statement used there, that's what I am trying to replace now). The code looks about as follows PROCEDURE run(p_boolean BOOLEAN) IS BEGIN DECLARE v_mystring VARCHAR(50); BEGIN

get mouse type in java using jna

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问题 SOVED thanks to @deFreitas I am trying to create remote control program in java . my problem is that I get image from remote computer using screenshot from the robot class and therefore I can not see the remote cursor. I know I can draw image of cursor on the screenshot but how can I get the global cursor type. I have searched a lot for that and the closest I got was this code: public interface User32 extends com.sun.jna.Library { public static User32 INSTANCE = (User32) com.sun.jna.Native

Solr cursor marker and pagination

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问题 I want to use Solr for my website as a search engine and I am trying to understand the difference between basic paging and deep paging with cursor marker. As far as I understand, if you use the basic pagination and query the page 1001 with 20 results per page this will happen: Solr will find the first 1000*20 matching results display the next 20 results for 1001 page I guess the problem is when someone clicks next page. Solr will find first the 1001*20 results and after that will show the

Identify word on Javascript onhover

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问题 I was looking through stackoverflow and came across this link(How to get a word under cursor using JavaScript?) They has the code: Each word will be wrapped in a span. A second paragraph here. Word: <script type="text/javascript"> $(function() { // wrap words in spans $('p').each(function() { var $this = $(this); $this.html($this.text().replace(/\b(\w+)\b/g, "$1")); }); // bind to each span $('p span').hover( function() { $('#word').text($