simplivity problems

Analysis of Web Page problems and Web page Problems A few months ago, I received a new development task and added some new features on an old Web page. In the process of development, I found that there are many common and inappropriate writing methods in the old Code. In combination with these problems, how can I write better, more standardized, and more maintain

Recent problems and problems 1. two days ago, in order to build an OpenStack, errors always occur during installation. I thought that each installation package can be downloaded at the beginning, but errors may occur when it is downloaded, in addition, the download speed is extremely slow, so I guess it may be because the speed of foreign servers in China is too slow. 2. But it's too slow to go abroad. How

New App shelving problems, new app shelving Problems Yesterday, I tried to mount the complete setup, but there were a lot of problems .... Now let's record it to make it easier to solve these problems in the future. First, log on to itunes Connect. Create my app information: There is an icon that needs to be upload

The good design must first understand "solves what problem", then analyzes "solves with what", then designs "The concrete how solves", finally when the condition allows the situation to think "this solution can be better". Coincides with the trilogy I used to repeat: 1 who is the user? 2 What's wrong with them? 3 How do we solve it? Design is to identify problems and solve problems. Good design is the accu

Problems with porting alsa-lib: Problems with porting alsa-lib Problems with porting alsa-lib Linux audio alsa lib VERSIONED_SYMBOLS During the migration of alsa lib in the past two days, I encountered a problem and was stuck for a long time.Make a record and be trapped by the same problem later. The problem is that there is a project where the customer requests

–6x3,Constraint conditions:X1–X2 + x3≤203x1 + 2x2 + 4x3≤423x1 + 2x2≤300≤x1, 0≤X2, 0≤x3MATLAB Program:>> f = [-5; -4; -6]; A = [1-1 1;3 2 4;3 2 0]; b = [ -; the; -]; LB = Zeros (3,1);>> [X,fval,exitflag,output,lambda] = Linprog (f,a,b,[],[],lb);>>xx=0.0000 15.0000 3.0000>>Fvalfval= -78.0000二、二次-Type planning problemsIt is much simpler to understand the problem of linear programming and then to learn two-time programming problems, which can be ana

Py2exe packaging problems, py2exe packaging problems Py2exepackage pythoninto the. exe file Packaging process and result 1. Create a setup script package file and set the packaging properties and methods. Note: Try to put the package file and the package script in the same directory (because an error occurred while trying to find the package file that is not reproducible) 2. On the cmd command line, go to t

Problems encountered during android development [1]: problems encountered during android Development Problems encountered during android development [1] I. Can I use the same include multiple times in an xml file? Http://www.apkbus.com/android-104152-1-1.html Use of the include tag in android Http://blog.csdn.net/wangljgood/article/details/6556175 IIAndroid butt

Analysis of problems with ajax requests for data, and problems with ajax requests for data Use jquery and post to request data: JSON. stringify (data) $.ajax({ type:"POST", async : false, url:"../../gzq/circle/deleteTeam", dataType:"json", contentType:"application/json; charset=utf-8", data:JSON.stringify(c), success:function(data){ console.log(data); }, error:function(error){ console.log(error); }}); Cau

Minor problems encountered during Android development and problems encountered in Android Development I, You need to use a Theme. AppCompat theme (or descendant) with this activity Solution The following error is reported:Java. lang. runtimeException: Unable to start activityComponentInfo {com. example. test2/com. example. test2.MainActivity}: java. lang. illegalStateException: You need to use a Theme. app

I am in the undergraduate graduation stage, graduation design to do an Android platform, for Java or small white I do have a bit of difficulty, but in the process is still a lot of harvest, now hope to put themselves in the process encountered in the various problems and friends to share, the gods do not like to spray, because the graduation design to do six months, So the next series is almost half a year to write, I try to persist.Let's get started!

Php array traversal problems, js problems, mainly click product thumbnails, click the event to increase, now, clicking the first graph and the following figure are both the reality. the code for placing a large graph is as follows: {foreachfrom $ goods_listitemgoods} {code ...} amp; lt; divid quot; divCenter quot; al... Php array traversal problems, js

Ubuntu14.04 has some common sense and some minor problems, while ubuntu14.04 has some minor problems. 1. Always get stuck after the screen lock This is a bug because ubuntu14.04 is not stable. Solution: Disable the brightness lock settings in system setting. You can only turn off the screen without locking the user, that is, no password is required for wake-up. 2. After ubuntu14 is installed, google Pinyin

Problems encountered in the development of shared scan code payment and solutions-attached Ecshop payment plug-in, problems encountered ecshop Recently, it was relatively easy to help a friend's ecshop-based shopping mall to add the scanning and payment function. I thought it was very simple-download the official sdk or development help documentation, it's okay to follow the steps in it. Who knows that it t

Redis performance problems and Redis performance problems Redis may cause performance problems and provide corresponding solutions. 1. Blocking of snapshot writing Solution: 2. AOF Problems Solution: 3. Memory bottleneck If the memory used by Redis exceeds the physical memory, it will use the virtual m

How to obtain SQL statements with performance problems and SQL statements with performance problems 1. Obtain SQL statements with performance problems through user feedback. 2. query logs to obtain SQL statements with performance. Start slow log query Slow_query_log = on Set global slow_query_log = on; Slow_query_log_file specifies the log storage pa

Summary of Python Installation Problems and python Problems Today is the first time I came into contact with the Python tool. I wrote a video on MOOC and installed and used it. The instructor on the video did not elaborate on how to install and use Python, but briefly introduced some common Python tools. Then I directly talked about installing the request library. I thought that the request can be directl

Nginx solves cross-origin problems and nginx solves cross-origin problems Here, we use the reverse proxy function of Nginx to solve cross-domain problems. As for what is the reverse proxy of Nginx, please use Baidu or Google. As a reverse proxy server, nginx forwards http requests to another or some servers. By ing a local url prefix to the web server for cross

Browser compatibility problems frequently encountered, browser compatibility problems 1. The default margin and padding of the browser are different. The solution is to add a global * {margin: 0; padding: 0. 2. IE6 bilateral margin bug: When the block attribute label float appears rampant, ie6 shows that the margin is larger than the setting. Solution: 1. Add display: inline to the label style Control of fl

Maximum subsequence and problems, subsequence Problems Maximum subsequences and Problems: Link: click here Problem description: Enter a group of Integers to obtain the subsequence of the numbers and the medium and maximum values. That is, as long as the sum of the largest subsequences is obtained, the largest sequence does not need to be obtained. For example: