special-characters | 易学教程

GCM and Special characters

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问题 I recently changed my c2dm push aaplucation to GCM. A new problem appeared. Its now receiving '?' instead of 'ö','ï', ... My server logs correct Strings, but the application receives '?' insteads. Do you think it could have something to do with GCM? My code is the following: public static void displayMessage(Context context, Intent intent) { Bundle extras = intent.getExtras(); if (extras != null) { String message = (String) extras.get("message"); Log.v("extras", extras.toString()); Util

non-ASCII character declaration

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问题 I would like to store a character (in order to compare it with other characters). If I declare the variable like this : char c = 'é'; everything works well, but I get these warnings : warning: multi-character character constant [-Wmultichar] char c = 'é'; ^ ii.c:12:3: warning: overflow in implicit constant conversion [-Woverflow] char c = 'é'; I think I understand why there is these warnings, but I wonder why does it still work? And should I define it like this : int d = 'é'; although it

How to Print Box Characters in C (Windows)

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How might one go about printing an em dash in C? One of these: — Whenever I do: printf("—") I just get a ù in the terminal. Thank you. EDIT: The following code is supposed to print out an Xs an Os looking grid with em dashes for the horizontal lines. int main () { char grid[3][3] = {{'a', 'a', 'a'}, {'a', 'a', 'a'}, {'a', 'a', 'a'}}; int i, j; for (i = 0; i < 3; i++) { for (j = 0; j < 3; j++) { if (j != 0) { printf("|"); } printf(" %c ", grid[i][j]); } if (i != 2) { printf("\n——————————————\n"); } } return 0; } Output: (The "ù"s should be "—"s) a | a | a ùùùùùùùùùùùù a | a | a ùùùùùùùùùùùù a |

Reading special characters like ÆØÅ into R (Rstudio)

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问题 I am trying to read a CSV file containing questionnaire data written in Norwegian. So this file contains the letters Æ Ø Å, however R does not seem to handle these letters well, they all appear as question marks. I use this to read the data: data <- read.csv2("Responser - Vasket - 20.06.2013.csv") Is there any options I should use to let R know I have special characters? and I am using Rstudio on Windows 7. 回答1: You need to specify the fileEncoding argument to read.csv2 ( not as well as (?)

What are the official XML reserved characters?

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问题 In this page, Microsoft says that XML reserved characters (and their entity) are the following ones: > > < < & & % % But in this other page, I found that also ' is a reserved character (and its entity is ' ). Can someone indicate me some official reference in which are listed all and only the XML reserved characters? 回答1: According to the XML spec, the only characters that must be escaped when used as character content rather than markup are & (as & , & or & ) and < (as < , < or < ),

Unicode symbols (arrows) in Java

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问题 i want to use following symbols for buttons in my app: arrows http://img402.imageshack.us/img402/3176/arrowso.jpg here my code: Button goToFirstButton = new Button("\uE318"); Button prevPageButton = new Button("\uE312"); Button nextPageButton = new Button("\uE313"); Button goToLastButton = new Button("\uE319"); and the result is result http://img693.imageshack.us/img693/9063/resultbu.jpg It seems, that \uE318 and \uE313 are wrong. What should i use instead? For goToLastButton and

How to get char from HTML character code?

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问题 How can I convert the HTML entities € ► ♠ to their actual characters € ► ♠ using JavaScript? 回答1: An example would be: alert(String.fromCharCode(8364)); Where 8364 is the number of the HTML entity. To replace a full body of text automatically then you will need to use this regular expression replacement example: "The price of milk is now €100000.".replace(/&#(\d{0,4});/g, function(fullStr, str) { return String.fromCharCode(str); }); The magic happens here: replace(/&#(\d{1,4});/g, function

iTextSharp and special characters (slovak graphemes)

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问题 I am having trouble with some special slovak characters (for example č, ň and ť). They are disappearing in the itextsharp generated pdf. From what I've been able to find, this problem has to do with encoding of my BaseFont . Currently I am using this: BaseFont.CreateFont(BaseFont.HELVETICA, iTextSharp.text.pdf.BaseFont.CP1250, BaseFont.NOT_EMBEDDED) Someone suggested that this should work: BaseFont.CreateFont(BaseFont.HELVETICA, iTextSharp.text.pdf.BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED)

Unicode characters in iText PDF

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问题 I need help with iText I look at some Google result and some here but don't find anything that work for me. I need to use polish character in my pdf but i got nothing for no. Here is a code that I think is important if need something else write in comment: private static Font bigFont = new Font(Font.FontFamily.HELVETICA, 18, Font.BOLD); another Paragraph par = new Paragraph(Łabadzak, bigFont); Can any1 tell me what to do to make that Ł visible in pdf and other polish character UPDATE I fund

Using middle-dot ASCII with proper support?

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问题 I'm using the middle dot - · - a lot in my website. The ASCII is · , which works fine. However, there are still some problems with some users not seeing the symbol. Is there a very close but more widely supported symbol like this, or is there a way to output the symbol to ensure full support? 回答1: Whether you use the actual · character or the HTML · entity, make sure ISO-8859-1 is being reported to the browser correctly, either in the charset attribute of the HTTP Content-Type response header