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10 minutes to understand character set and character encoding What is a character set What is character encoding The relationship between UTF-8 and Unicode Introduction to UTF-8 Coding Why do garbled characters occur? How to identify garbled text that you want to express The emoji of common problem handling This article will briefly describe the concept of character set and character encoding. And some c

| + ------------------------------------- + 1 row inset (0.01 sec) Step 2 Recognition Now we get the decoded binary string E5BE88E5B18C. Then we split it by byte. Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6 E5 BE 88 E5 B1 8C Then apply the Rules summarized in the previous chapter of UTF-8 encoding, it is not difficult to find that the 6 bytes of data comply with the UTF-8 encoding rules. If the entire data stream meets this rule, we can

: Uicontroleventeditingchanged]; -(void) Textfielddidchange: (Uitextfield *) textfield{ if (TextField = = Self.textfieldname) {if ) {= [textfield.text substringtoindex:15 ]; } }}Do you think this is done with the Chinese Association, paste the bug, you have peace of mind ... This method still has a bug, if the input to the left one character, then input emoji? Emoji occupies

Original: WebSockets on IOS with StarscreamAaron DouglasTranslator: Kmyhy Traditional network technology (i.e. Berkeley sockets) is considered to be reliable and stable. But the Berkeley socket is not very good under certain web technologies, such as proxies and firewalls. WebSocket appeared in 2011 as a new technology to establish two-way communication between client and server. WebSocket is more efficient than multiple HTTP requests and allows for long connections.It's not that easy to us

: // asset/asset. jpg? Id = 1000000001 ext = JPGAlassetslibrary * library = [[alassetslibrary alloc] init]; ...} # Import # Import Http://stackoverflow.com/questions/5187251/ios-select-a-gif-from-the-photo-library-convert-to-nsdata-for-use-in-multipart 10. Save the image to the album. -(Void) savetophotosalbum{Uiimage * image = nil;Nsobject * OBJ = ..;If ([OBJ iskindofclass: [uiimage class]){Image = (uiimage *) OBJ;}Else{Image = [uiimage imagewithdata :( nsdata *) OBJ];} If (image){Uiimagewrit

directly from SQL without looking at the table:mysql [localhost] {msandbox} ((none)) > select CONVERT (0xe5be88e5b18c using UTF8); +-------------------------------- ----+| Convert (0xe5be88e5b18c using UTF8) |+------------------------------------+| Very dick |+------------------------------------+1 row in Set (0.00 sec)The emoji of common problem handlingThe so-called emoji is

when I met emoji. Assume that the limit is entered in 15 characters, and the 15th character if the input is emoji, the emoji does not display properly. Because emoji is a two-character size.So, here's the idea of preventing this rough truncation method. http://stackoverflow.com/questions/15775294/ Truncate-st

action_ignore_battery_optimization_settings the Power Optimization page, users can use the search to turn off the application's power optimization to add the whitelist. Hold the Request_ignore_battery_optimizations permission first, and then start the Intentaction_request_ignore_battery_ Optimizations Direct Eject dialog allows the user to turn off the application's power optimization to add a whitelist. 4. Special Circumstances The front desk service (Foreground-service) will not be affecte

) | + ------------------------------------ + | Awesome | + ------------------------------------ + 1 row in set (0.00 sec) Troubleshooting of common problems with Emoji Emoji is a character in the \ u1F601-\ u1F64F segment of Unicode. This apparently exceeded the encoding range \ u0000-\ uFFFF of the commonly used UTF-8 character set. With the popularity and support of IOS,

Preface: Because the company development projects need to use the expression Plug-ins, Baidu for a long time on the internet, a lot of expression plug-ins, are required to cite a lot of JS files, there is no ready-made demo can be used, and some plug-ins are cited a lot of pictures, every expression to be asked again. For such a function, to introduce a lot of js,img, but also outweigh the gains ... Therefore, Bo master their own code a small "expression plug-in" to facilitate the direct use o

We used Unicode to welcome the use of emoji in future projects. then, the problem arises, and the backend MySQL database cannot store emoji characters. Emoji is a subset of the Unicode character set. Unicode should be widely used. how can this problem be solved? This should start from scratch. Unicode is used to solve the unified encoding of global characters. wi

requirement is to output a table (similar to excel). All the information of the same product is output in one row. There are four rows in total, as shown below: Extra bag mug 1.00 1.001 lb/2.00 2.00Niu Lin film 5mm 3.00 3.00Thick Niu Lin film 4.00 4.00 Don't blame cainiao. In order to give you an example, it will be mixed up. 'Fill bag cup ', 'typea' => 'dpk219', 'typeb' => 'vac001', 'price' => '1. 00'), array ('catoggary '=> 'character bag mug', 'typea' => 'dpk219 ', 'typeb' => 'vbw001 '

1.1g-4g1G Cellular Voice Call2G PHS using GSM, a military standard in the United States, was later civilian. can send text messages, the Internet URL is not www, is wap.baidu.com3G can access the Internet, directly with the WWW can be accessed 7.2M4G LTE 100m/s5G Huawei 600 million dollars, 10g/s small companies sell products, large companies sell copyright.2.Android Introduction Android was originally developed by Andy Rubin and others, the first mobile phone with Android operating sys

, and system interface adjustments.OPENJDK replacing the Java APIDespite the losing of Google. Android will no longer use Oracle's Java API in the future. But this does not affect Google's use of Oracle's OPENJDK, an open source Java development tool. This incident has been confirmed by Google's official: "We plan to create a common code environment for developers to build applications and services by ' changing the Android Jave language Library to a OPENJDK-based development language '

Hi, everybody. Today we will release the final version of Nougat. We apologise for the delay because the September patch took too long to be merged and the team members were busy. Please note that these final versions may take some time to be available on the official download page. Version will encounter 5.8.5 changes and features are as follows: September Consolidated security Patch add PA Color engine improved pocket mode with color engine theme co

iskindofclass: [uiimage class]) {image = (uiimage *) OBJ;} else {image = [uiimage imagewithdata :( nsdata *) OBJ];} if (image) {uiimagewritetosavedphotosalbum (image, self, @ selector (image: didfinishsavingwitherror: contextinfo :), nil);} else {// @ "failed to save ";}} # If 1-(void) image :( uiimage *) image didfinishsavingwitherror :( nserror *) Error contextinfo :( void *) contextinfo {If (error = nil) // @ "saved successfully"; else // @ "failed to save";} # endif 11.

| Byte 2| Byte 3| Byte 4| Byte 5| Byte 6|-|-|-|-|-|-|e5|be|88| e5| b1|8cThen apply the UTF-8 code before the introduction of the rules summarized in the chapter, it is not difficult to find that the 6-byte data conforms to the UTF-8 encoding rules. If the entire data flow conforms to this rule, we can boldly assume that the coded character set before garbled is UTF-83rd Step DecodingThen we can take the E5BE88E5B18C UTF-8 decoding, look at the text before garbled. Of course we can get results di

E5BE88E5B18C UTF-8 decoding, look at the text before garbled. Of course we can get results directly from SQL without looking at the table:Mysql[localhost]{Msandbox}((None))>select convert (0xe5be88e5b18c Span class= "K" >using utf8) | convert (0xe5be88e5b18c using span class= "n" >utf8) | +------------------------------------+| very dick | +------------------------------------+1 row in Set (0. XX sec) The emoji of common problem handlin

take the E5BE88E5B18C UTF-8 decoding, look at the text before garbled. Of course we can get results directly from SQL without looking at the table: 1234567 mysql [localhost] {msandbox} ((none)) > select convert(0xE5BE88E5B18C using utf8);+------------------------------------+| convert(0xE5BE88E5B18C using utf8) |+------------------------------------+| 很屌 |+------------------------------------+1 row in set (0.00 sec) The emoji

I have always wanted to use crawlers to land and crawl Twitter data, tried scrapy,requests and other packages, are not successful, may be I am not familiar with the reasons, butA new package, Tweepy, was discovered today, dedicated to handling the Twitter API in Python. Try the first example of the tutorial first, after a bit of your own modificationThe code is as follows:Tweepy Crawl Twitter Data 1 import re import tweepy auth = tweepy. Oauthhandler ("xxxxx",