cursor

Cursor visibility issue in ios7

由 那年仲夏 提交于 2020-01-01 04:04:06
问题 Simply creating a UITextField in ios7 SDK but when I enter some input, text is shown UItextField but cursor isn't. Any clue about what can be the problem? 回答1: Change the tintColor of the UITextField with a cursor [mobileTextField setTintColor:[UIColor blueColor]]; if you are use the XIb please set the tin color of UITextField Note :- This is working on IOS 7+ 回答2: As @Deepesh said, it's a matter of choosing the proper tint color. However it was not enough in my case since I am creating the

Cursor visibility issue in ios7

由 早过忘川 提交于 2020-01-01 04:04:03
问题 Simply creating a UITextField in ios7 SDK but when I enter some input, text is shown UItextField but cursor isn't. Any clue about what can be the problem? 回答1: Change the tintColor of the UITextField with a cursor [mobileTextField setTintColor:[UIColor blueColor]]; if you are use the XIb please set the tin color of UITextField Note :- This is working on IOS 7+ 回答2: As @Deepesh said, it's a matter of choosing the proper tint color. However it was not enough in my case since I am creating the

Python操作MySQL数据库9个实用实例

由 北城余情 提交于 2020-01-01 03:18:46
用python连接mysql的时候，需要用的安装版本，源码版本容易有错误提示。下边是打包了32与64版本。 MySQL-python-1.2.3.win32-py2.7.exe MySQL-python-1.2.3.win-amd64-py2.7.exe 实例 1、取得 MYSQL 的版本 ? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 # -*- coding: UTF-8 -*- #安装 MYSQL DB for python import MySQLdb as mdb con = None try : #连接 mysql 的方法： connect('ip','user','password','dbname') con = mdb.connect( 'localhost' , 'root' , 'root' , 'test' ); #所有的查询，都在连接 con 的一个模块 cursor 上面运行的 cur = con.cursor() #执行一个查询 cur.execute( "SELECT VERSION()" ) #取得上个查询的结果，是单个结果 data = cur.fetchone() print "Database version : %s " % data finally : if con:

Python操作MySQL数据库9个实用实例

由 南楼画角 提交于 2020-01-01 03:17:30
在Windows平台上安装mysql模块用于Python开发 用python连接mysql的时候，需要用的安装版本，源码版本容易有错误提示。下边是打包了32与64版本。 百牛信息技术bainiu.ltd整理发布于博客园 MySQL-python-1.2.3.win32-py2.7.exe MySQL-python-1.2.3.win-amd64-py2.7.exe 实例 1、取得 MYSQL 的版本 # -*- coding: UTF-8 -*- #安装 MYSQL DB for python import MySQLdb as mdb con = None try: #连接 mysql 的方法： connect('ip','user','password','dbname') con = mdb.connect('localhost', 'root','root', 'test'); #所有的查询，都在连接 con 的一个模块 cursor 上面运行的 cur = con.cursor() #执行一个查询 cur.execute("SELECT VERSION()") #取得上个查询的结果，是单个结果 data = cur.fetchone() print "Database version : %s " % data finally: if con: #无论如何，连接记得关闭

python python操作MySQL

由 北城余情 提交于 2020-01-01 03:15:45
　　MySQL是Web世界中使用最广泛的数据库服务器，SQLite的特定是轻量级，可嵌入，但不能承受高并发访问，适合桌面和移动应用。而MySQL是为服务器端设计的数据库，能承受高并发访问，同时占用的内存也远远大于SQLite。此外，MySQL内部有多种数据库引擎，最常用的引擎是支持数据库事务的InnoDB。 一，安装MySQL 这里小编就不详细介绍了，要是有不会安装的可以参考下面博客 http://www.cnblogs.com/wj-1314/p/7573242.html 二，安装MySQL-python 要想使python可以操作mysql 就需要MySQL-python驱动，它是python 操作mysql必不可少的模块。 下载地址： https://pypi.python.org/pypi/MySQL-python/ 下载MySQL-python-1.2.5.zip 文件之后直接解压。进入MySQL-python-1.2.5目录: >>python setup.py install 然后安装pymysql pip install pymysql 　　 三，测试pymysql模块 　　测试非常简单，检查pymysql模块是否可以正常导入。（在操作数据库的时候，python2一般使用mysqldb，但是在python3中已经不再支持mysqldb了

9月学习笔记-前端知识碎片

由 安稳与你 提交于 2020-01-01 02:50:18
工作笔记-知识碎片-2019-9 1.Echarts的cursor指向无效 原因：echarts使用canvas画图，使用行内样式设定canvas的 cursor:pointer; 解决：使用样式覆盖这个行内样式比如： .echarts canvas{cursor:pointer !important;} 2.轮播图片宽高自适应问题 效果图： 宽度为自适应屏幕宽度，有最小宽度，高度不管是设为固定px或百分比都会导致图片变形或被裁剪，所以应动态设定图片高度。 html: <div class="ty-carousel"> <el-carousel ref='ctest' :height="imgHeight+'px'" :interval='5000'> <el-carousel-item v-for="(item,index) in carouselData" :key="index"> <img ref="image" :src="item.src" alt=""> </el-carousel-item> </el-carousel> </div> style: .ty-carousel{ margin-bottom: 16px; } .ty-carousel .el-carousel__item img { width: 100%; height: auto; } .ty

Cursors on MySQL - Good or Bad

由 南楼画角 提交于 2020-01-01 00:50:14
问题 I have always heard people saying bad about using cursors and this is especially in Microsoft SQL Server as they are very slow. Is this the case with Cursors on MySQL as well? Does cursors in MySQL reduce performance as well? Can someone please advice on the usage of cursors in MySQL? 回答1: Most modern databases (including MySQL) are designed to perform set based operations. The problem with cursors is that they perform row based (or procedural) operations. Because of this you will almost

PL/SQL Cursor for loop

由 冷暖自知 提交于 2020-01-01 00:48:36
问题 I believe I need a cursor for loop to go through the street1 column from table test_data. I have a program which needs to test each row from the table. This is what I have so far: cursor c1 is street1 from test_data Begin If Instr(street1, ‘Cnr’, 1) >= 1; Then Newstreetname := Substr(street1, Instr(street1, ‘Cnr’, 1)+3); Else if Instr(street1, ‘PO Box’, 1) >= 1; Then Newstreetname:= Substr(street1, Instr(street1, ‘PO Box’, 1)); Else if REGEXP_ Instr (street1, [\d], 1) = 0; Then Newstreetname:

Android CursorLoader

由 房东的猫 提交于 2019-12-31 16:28:36
问题 I am just starting to play with the new cursorLoader and I am running into problems. The following code is just to understand how the cursorLoader works but I keep getting: "Trying to requery and already closed cursor", when I resume this activity. The app was working fine before I started playing with the cursorLoader. Any ideas? private Cursor getSectionData(CharSequence parent_id) { String[] projection = new String[] {Titles.SECTION, Titles.TITLE, Titles._ID, Titles.CODE_RANGE,}; Uri

Python + MongoDB - Cursor iteration too slow

由 萝らか妹 提交于 2019-12-31 14:34:13
问题 I'm actually working in a search engine project. We are working with python + mongoDb. I'm having the following problem: I have a pymongo cursor after excecuting a find() command to the mongo db. The pymongo cursor have around 20k results. I have noticed that the iteration over the pymongo cursor is really slow compared with a normal iteration over for example a list of the same size. I did a little benchmark: -iteration over a list of 20k strings: 0.001492 seconds -iteration over a pymongo
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