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Closed 10 years ago.
I am working on an iOS application. In this application I am trying to convert NSString to hexadecimal. But in some cases NSString contains special $, ¥, etc. This is where I am facing problem. These characters don't convert to hexadecimal.
Is there any way to convert special characters to hexadecimal?
Convert the string to NSData
[NSString dataUsingEncoding:]
Then using the data object you can output any base you want: octal, hex, decimal, binary.
Related
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Closed 9 years ago.
La> ila>ha illAlla>hu wah}dahu> la> shari>ka lahu, lahul mulku wa lahul h}amdu, wa huwa ‘ala> kulli shai’in nadir.
This is transliteration of ayah. The font used is Times New Arabic . After applying this font i didn't see any changes.Characters like ">" didn't disappears. any solution?
use
NSString *ayah = #"La> ila>ha illAlla>hu wah}dahu> la> shari>ka lahu, lahul mulku wa lahul h}amdu, wa huwa ‘ala> kulli shai’in kadir.";
ayah = [ayah stringByReplacingOccurrencesOfString:#">"
withString:#""];
ayah = [ayah stringByReplacingOccurrencesOfString:#"}"
withString:#""];
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Closed 10 years ago.
Can anyone decode ascii value in iOS?
I can decode single character value but more than one character i cant decode
Thanks in advance.
This is my string value
<?xml version=\"1.0\" encoding=\"UTF-8\" ?><prestashop></prestashop>
the ascii encoded value is
62651221111103412010311611710711311263365148503634103112101113102107112105633687867247583634656462114116103117118991171061131146462491141161031171189911710611311464
ascii is just a string encoding
you only need to have this:
NSData *ascii = ... //asci data
NSString *string = [[NSString alloc] initWithData:ascii encoding:NSASCIIStringEncoding];
or
char *cStringInAscii = "lalalalasada";
NSString *string = [NSString stringWithCString:cStringInAscii encoding:NSASCIIStringEncoding];
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Closed 11 years ago.
How can I decode unicode characters from an URL?. I specified response.charset="UTF-8" in my request, and I received unicode characters like %e3%81%a4%e3%82%8c%e3%. How can I convert these to something I can display on my form?
RFC 3986 specifies how to interpret this. You first decode the percent-escaped byte values in the standard way. Then you interpret the byte stream as UTF-8 to reconstruct the characters. You can find more information here.
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Closed 10 years ago.
As seen here, they have the line ZG9udGJlYWhhdGVyc3RhcnR1cCtoYWNrZXJuZXdzQGdtYWlsLmNvbQ==.
How would one go about decoding this line of Base64?
Base64-decode it. For example, put it in this online decoder: http://www.opinionatedgeek.com/dotnet/tools/base64decode/
BTW this is not encryption, it's encoding.
This is a simple base64 encoding, one way to decode it is to use openssl
echo 'ZG9udGJlYWhhdGVyc3RhcnR1cCtoYWNrZXJuZXdzQGdtYWlsLmNvbQ==' | openssl base64 -d
Use a base64 decoder. Or - specify a language you would like to use and I can give you some example code.
BTW: I decoded this using this online decoder:
http://www.convertstring.com/EncodeDecode/Base64Decode
It decodes to
dontbeahaterstartup+hackernews#gmail.com
Base64 encoding is explained here: Base64 decoder
ZG9udGJlYWhhdGVyc3RhcnR1cCtoYWNrZXJuZXdzQGdtYWlsLmNvbQ== => dontbeahaterstartup+hackernews#gmail.com
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Closed 12 years ago.
I'm totally confused which one to use and when, first thing I do when something goes wrong in code with a slash is replace the one with other so my test cases double with one for / and one for \ .Help me to get the logic behind slashes.
From the wikipedia article about the backslash:
Bob Bemer introduced the \ character
into ASCII, on September 18, 1961, as
the result of character frequency
studies. In particular the \ was
introduced so that the ALGOL boolean
operators "∧" (AND) and "∨" (OR) could
be composed in ASCII as "/\" and "/"
respectively.[4] Both these operators
were included in early versions of the
C programming language supplied with
Unix V6 , Unix V7 and more currently
BSD 2.11.
/ is generally used to denote division as in 10/2 meaning 10 divided by 2. \ is generally used as an escape character as in \t or \n representing a tab and a newline character respectively.
There's nothing like a "forward slash". There's a "slash" / and a "backslash" \.
There's a long and IMHO ilarious discussion about that on the xkcd forum
One More Thing....
The Forward Slash / is Used in *nix To Navigate to the Filesystem...
Like .... /root/home/vs4vijay
and The BackSlash \is Used In Windows ...
Like ..... F:\Games\CounterStrike