cursor | 易学教程

Vim start with cursor where last went off [closed]

阅读更多关于 Vim start with cursor where last went off [closed]

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 7 years ago . How do i make Vim always start at the line I was at when i exited that given file last time? 回答1: Put this in your .vimrc: " When editing a file, always jump to the last cursor position au BufReadPost * \ if ! exists("g:leave_my_cursor_position_alone") | \ if line("'\"") > 0 && line ("'\"") <= line("$") | \ exe

How do you set hotspot co-ordinates on a Windows cursor generated from an icon file?

阅读更多关于 How do you set hotspot co-ordinates on a Windows cursor generated from an icon file?

问题 I'm setting a custom cursor on my app from an icon file, but the click point is at the wrong co-ordinates. I'm setting the cursor with SetClassLongPtr(hwnd, GCL_HCURSOR, reinterpret_cast<LONG_PTR>cursor) where cursor is the result of; LoadImage( NULL, "some_path/cursor.ico", IMAGE_ICON, //also tried IMAGE_CURSOR 0, //width. 0 uses the width of the file provided 0, //height. 0 uses the height of the file provided LR_LOADFROMFILE ); The cursor loads fine, but its clicks come from the bottom

How to get phone number from person name which are in my contact list in android

阅读更多关于 How to get phone number from person name which are in my contact list in android

问题 I want to get phone no of the person from his name which are in my contact list. i have used the below code but it is not working fine. Tell me where i am wrong. try { cursor_company =getContentResolver().query(ContactsContract.Data.CONTENT_URI, null,ContactsContract.Data.DISPLAY_NAME+ " = " + "sidharth", null, null); } catch(Exception e) { System.out.println("this is exception "+e); } String phone_number; while (cursor_company.moveToNext()) { Phone_number =cursor_company.getString( cursor

饮冰三年-人工智能-Python-42 Python之Flask中的WTForm+DBUtils实现学生管理系统

阅读更多关于饮冰三年-人工智能-Python-42 Python之Flask中的WTForm+DBUtils实现学生管理系统

上篇中我们通过Flask蓝图简单做了一个增删改查的学生管理系统，在数据和页面校验上都存在很大问题。接下来我们完善一下。代码存储： GitHub 一、基于DBUtils实现数据库连接池 1：原理浅析　　连接池：是创建和管理连接的缓存池。简单的说：随时准备着。有一些国外学者喜欢称之曰“备胎”。　　优点：　　　　一：减少连接创建时间　　　　二：受控的资源使用　　　　连接池能够使性能最大化，同时还能将资源利用控制在一定的水平之下，如果超过该水平，应用程序将崩溃而不仅仅是变慢。　　原理与操作（1）建立数据库连接池对象（服务器启动）。（2）按照事先指定的参数创建初始数量的数据库连接（即：空闲连接数）。（3）对于一个数据库访问请求，直接从连接池中得到一个连接。如果数据库连接池对象中没有空闲的连接，且连接数没有达到最大（即：最大活跃连接数），创建一个新的数据库连接。（4）存取数据库。（5）关闭数据库，释放所有数据库连接（此时的关闭数据库连接，并非真正关闭，而是将其放入空闲队列中。如实际空闲连接数大于初始空闲连接数则释放连接）。（6）释放数据库连接池对象（服务器停止、维护期间，释放数据库连接池对象，并释放所有连接） 2：连接练习　　1：首先安装DBUtils 和 PyMySQL from flask import Flask import pymysql

Invalid cursor state, SQL state 24000 in SQLExecDirect

阅读更多关于 Invalid cursor state, SQL state 24000 in SQLExecDirect

问题 I need to call two stored procedures in sequence via ODBC in PHP: #run stored procedure 1 $query = "Shipped_Not_Shipped_Rep ".$_GET['rep_id']; $result = odbc_exec($dbh, $query); odbc_result_all($result); #run stored procedure 2 $query = "Shipped_Not_Shipped_Account ".$_GET['account_id']; $result = odbc_exec($dbh, $query); odbc_result_all($result); I'm getting this error in PHP after the second stored procedure call: Warning: odbc_exec() [function.odbc-exec]: SQL error: [unixODBC][FreeTDS][SQL

Android ContentProvider calls bursts of setNotificationUri() to CursorAdapter when many rows are inserted with a batch operation

阅读更多关于 Android ContentProvider calls bursts of setNotificationUri() to CursorAdapter when many rows are inserted with a batch operation

问题 I have a custom ContentProvider which manages the access to a SQLite database. To load the content of a database table in a ListFragment , I use the LoaderManager with a CursorLoader and a CursorAdapter : public class MyListFragment extends ListFragment implements LoaderCallbacks<Cursor> { // ... CursorAdapter mAdapter; @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); mAdapter = new CursorAdapter(getActivity(), null, 0);

Idiom to close a cursor

阅读更多关于 Idiom to close a cursor

问题 Which of the following two should I be using to make sure that all the cursors are closed? Cursor c = getCursor(); if(c!=null && c.getCount()>0){ try{ // read values from cursor }catch(..){} finally{ c.close(); } }//end if OR Cursor c = getCursor(); try{ if(c!=null && c.getCount()>0){ // read values from cursor }//end if }catch(..){ }finally{ c.close(); } EDIT: A few questions: 1. Do we need to call close() on a cursor which has count of 0? 2. Because in that case for the first idiom, close()

Idiom to close a cursor

阅读更多关于 Idiom to close a cursor

重温Oracle11g新特点ACS

阅读更多关于重温Oracle11g新特点ACS

1. ACS简介 Oracle Database 11g提供了Adaptive Cursor Sharing (ACS)功能，以克服以往不该共享的游标被共享的可能性。ACS使用两个新指标：sensitivity and bindawareness来实施该特点。 2. ACS机制 2.1. Adaptive Cursor Sharing Metadata：Oracle 11g也提供了三个新视图和动态视图V$SQL的两个新列来允许DBA来确定优化器是否已经确定一个SQL语句为一个ACS的候选，并且，也可以通过它们来观察优化器分类SQL语句用以共享的执行计划所使用的业务规则：视图描述 V$SQL Two new columns are added: IS_BIND_SENSITIVE indicates if a SQL statement is bind-sensitive. If this column contains a value of (Y)es, it means that the optimizer peeked at the values of the statement’s bind variables so that it can calculate each predicate’s selectivity. Likewise, IS_BIND_AWARE

MYSQL cursor loop, runs one extra round, why?

阅读更多关于 MYSQL cursor loop, runs one extra round, why?

问题 I'm looping through a cursor result set in a MYSQL stored procedure. I'm facing an issue which is that the loop always run thorough the last record twice. Here is my code, BEGIN DECLARE not_found_creadit INT DEFAULT 0; DECLARE cur_credit CURSOR FOR SELECT customer_id, amount, status, user_type, employee, note FROM credit WHERE status = 'approved' AND customer_id = int_cust_id; DECLARE CONTINUE HANDLER FOR NOT FOUND SET not_found_creadit = 1; OPEN cur_credit; SET not_found_creadit = 0; credit