special-characters

问题 I have a project with Russian values in the DB. All I need to do is echo them, but it's proving more difficult than anticipated. All russian chars are just printing as question marks. IE: ??? ? ??????? All English chars print just fine for each encoding I've tried. To simplify my troubleshooting, I playing in my sandbox: <?php //header('Content-Type: text/html;charset=koi8-r'); //header('Content-Type: text/html;charset=windows-1251'); header('Content-Type: text/html;charset=utf-8'); if(!$link

问题 In a TextArea , I am using the ' character but it is not displaying properly. Instead, it is displaying something like this: – . How do I get the ' character to display properly? 回答1: You are probably not using the Ascii apostrophe (') but some non-Ascii punctuation mark, such as the correct punctuation apostrophe (’). The problem arises because your HTML document is (probably) UTF-8 encoded but the browser interprets it as windows-1252 encoded. If there encoding is not declared in HTTP

问题 I need to pass a colon within an URL in ASP.NET, like "http://mywebapp.com/Portal:Main/". Wikipedia does this a lot, and colons are valid URL characters according to the RFC. I've found this SO question and read through this blog post which covers the invalid characters filter in ASP.NET. Using VS2010 Ultimate and trying with a new ASP.NET WebForms and a new ASP.NET MVC 2 project I always added this to my web.config: <httpRuntime requestPathInvalidCharacters="" /> as well as this <httpRuntime

问题 In my ongoing quest to interface with some legacy equipment, I've discovered that the vendor supplied software sets the special characters to: 00 00 00 00 11 13 But the SerialPort class of .NET set them to: 1A 00 00 1A 11 13 I suppose that I have two questions: What do these bytes mean? How can I tell SerialPort to use a specific set of special characters? The latter is all I really care about, but I suspect the former is going to be useful to know. Update: The following doesn't work: byte[]

问题 I'm not very experienced in Regex. Can you tell me how to get a string value from between two strings? The subject will always be in this format : //subject/some_other_stuff I need to get the string found between // and / . For example: Full String = //Manhattan/Project Output = Manhattan Any help will be very much appreciated. 回答1: You can use a negated character class and reference capturing group #1 for your match result. //([^/]+)/ Explanation: // # '//' ( # group and capture to \1: [^/]+

问题 In my Application a webservice will return a json { "UserDetails": [ { "UserId": "57", "EmailId": "prasant@xyz.com", "UserName": "Prasant", "TimezoneMins": "330", "CustomLogo": "", "IsExecutive": "True", "HasNTID": "1", "Org_Id": "1", "Org_Name": "Summit", "Designation": null, "Location": null, "Location_Name": "", "WsVersion": "V5.1.0", "CallMe": "FALSE", "GPS": "FALSE", "Feedback_IM&SR": "NULL", "RPT_Widgets_Access": "False" } ] } Here i want to Deserialize this json into a class object. In

问题 On this post MongoDB finding nested elements, author claims that the mongodb document structure is car : { "$ref" : "cars" , "$id" : { "$oid" : "4e8478ace4b0dea06288ad63"}} When i tried to reproduce the problem, i encountered some weird behaviors with mongodb insertion When run the insertion on above sample data, i got following error > db.sample.insert({car:{ "$ref" : "cars" , "$id" : { "$oid" : "4e8478ace4b0dea06288ad63"}}}) Tue Jan 24 14:09:07 uncaught exception: field names cannot start

问题 I have a form that looks like this: <form action="/assesment/savelist/" method="post"> <input type="hidden" name="owner" value="<?php echo $userid ?>" /> <input type="text" name="title" value="Question List Title" /> <textarea name="description"></textarea> <input type="submit" /> </form> In the description people will have to be able to use the £ character (among other non-allowed characters). Is there anyway to convert these characters to something that is allowed before posting them to my

问题 This question already has answers here : What are the Java semantics of an escaped number in a character literal, e.g. '\15' ? (3 answers) Closed last year . I've seen this char defined as char ch = '\117' What kind of representation is '\117' in? I know escaped-sequence is '\n' , for instance, or unicode is `\udddd' , where d is a single hex digit, but I've never seen such thing as '\117' in my entire life! Surprisingly, it does compile! (And the output is O ) 回答1: This is the octal

问题 There is an issue on Laravel 5.3 / Jesenger / MongoDB 3.0 which I reported here. The issue arises from saving or updating a field with special characters like "°ó" in mongodb, it always results in "out of memory" error. Allowed memory size of ######### bytes exhausted (tried to allocate ********** bytes) //Whereas ######### is always greater than ********** My question is how can I convert the special character so that they can be safely pushed into the database. Note : I am doing batch