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  • String Parsing in C#

    - by Betamoo
    What is the most efficient way to parse a C# string in the form of "(params (abc 1.3)(sdc 2.0)....)" into a struct in the form struct Params { double abc,sdc....; } Thanks EDIT The structure always have the same parameters (number and names).. but the order is not granted..

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  • How Do I Remove The First 4 Characters From A String If It Matches A Pattern In Ruby

    - by James
    I have the following string: "h3. My Title Goes Here" I basically want to remove the first 4 characters from the string so that I just get back: "My Title Goes Here". The thing is I am iterating over an array of strings and not all have the h3. part in front so I can't just ditch the first 4 characters blindly. I have checked the docs and the closest think I could find was chomp, but that only works for the end of a string. Right now I am doing this: "h3. My Title Goes Here".reverse.chomp(" .3h").reverse This gives me my desired output, but there has to be a better way right? I mean I don't want to reverse a string twice for no reason. I am new to programming so I might have missed something obvious, but I didn't see the opposite of chomp anywhere in the docs. Is there another method that will work? Thanks!

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  • How can I make nested string splits?

    - by Statement
    I have what seemed at first to be a trivial problem but turned out to become something I can't figure out how to easily solve. I need to be able to store lists of items in a string. Then those items in turn can be a list, or some other value that may contain my separator character. I have two different methods that unpack the two different cases but I realized I need to encode the contained value from any separator characters used with string.Split. To illustrate the problem: string[] nested = { "mary;john;carl", "dog;cat;fish", "plainValue" } string list = string.Join(";", nested); string[] unnested = list.Split(';'); // EEK! returns 7 items, expected 3! This would produce a list "mary;john;carl;dog;cat;fish;plainValue", a value I can't split to get the three original nested strings from. Indeed, instead of the three original strings, I'd get 7 strings on split and this approach thus doesn't work at all. What I want is to allow the values in my string to be encoded so I can unpack/split the contents just the way before I packed/join them. I assume I might need to go away from string.Split and string.Join and that is perfectly fine. I might just have overlooked some useful class or method. How can I allow any string values to be packed / unpacked into lists? I prefer neat, simple solutions over bulky if possible. For the curious mind, I am making extensions for PlayerPrefs in Unity3D, and I can only work with ints, floats and strings. Thus I chose strings to be my data carrier. This is why I am making this nested list of strings.

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  • Convert Dashes to CamelCase in PHP

    - by Kirk
    Can someone help me complete this PHP function? I want to take a string like this: 'this-is-a-string' and convert it to this: 'thisIsAString': function dashesToCamelCase($string, $capitalizeFirstCharacter = false) { // Do stuff return $string; }

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  • How do I apply a string function to an array?

    - by ggg
    I was fortunate enough to receive this code (flips Lastname, Firstname) from an earlier post. $name = "Lastname, Firstname"; $names = explode(", ", $name); $name = $names[1] . " " . $names[0]; How do I apply the function to each value in an array that is in the form: $ginfo ->$(LastName, FirstName). I tried the code below, but it doesn't work. $name1 =($ginfo->White); $name1 = explode(", ", $name1); $FLw = $name1[1] . " " . $name1[0]; foreach ($name1 as ($ginfo->White)) {return($FLw);}

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  • How to remove all special characters from URL?

    - by NeoNmaN
    Hello all. I have my class public function convert( $title ) { $nameout = strtolower( $title ); $nameout = str_replace(' ', '-', $nameout ); $nameout = str_replace('.', '', $nameout); $nameout = str_replace('æ', 'ae', $nameout); $nameout = str_replace('ø', 'oe', $nameout); $nameout = str_replace('å', 'aa', $nameout); $nameout = str_replace('(', '', $nameout); $nameout = str_replace(')', '', $nameout); $nameout = preg_replace("[^a-z0-9-]", "", $nameout); return $nameout; } BUt I can't get it to work when I use special characters like ö and ü and other, can sombody help me here? I use PHP 5.3.

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  • On-the-fly thumbnails PHP

    - by Wayne
    I came up with this: <?php $dir = $_GET['dir']; header('Content-type: image/jpeg'); $create = imagecreatetruecolor(150, 150); $img = imagecreatefromjpeg($dir); imagecopyresampled($create, $img, 0, 0, 0, 0, 150, 150, 150, 150); imagejpeg($create, null, 100); ?> It works by accessing: http://domain.com/image.php?dir=thisistheimage.jpg Which works fine... but the output is awful: Can someone fix my code for the image to be 150 x 150 covering the black area... Thanks.

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  • PHP Modify Array

    - by Ozzy
    Hi all, I have the following array: array(a, a, a, b, b, c, c, c, c, d, d); When I loop through it and echo it, the result is: a a a b b c c c c d d How ever I want to echo it in such a way that it displays: a b c d a b c d a c c Here is the array in a grid to better explain what im trying to achieve Current a a a b b c c c c d d What im tryin to do a b c d a b c d a c c How would I do this?

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  • Replacing substring in a string

    - by user177785
    I am uploading a image file to the server. Now after uploading the file to the server I need to rename the file with an id, but the extension of the file should be retained. Eg: if I upload the file image1.png then my server script should retain the extension .png. But I need to change the substring to some other substring (primary key of db). image1.png should be renamed to 123.png image2.jpg should be renamed to somevalue.jpg The image can be of any extension like .png, .jpg, .jpeg etc. I want to rename then in such a way that the image/file extension should be retained.

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  • Delete all characters in a multline string up to a given pattern

    - by biffabacon
    Using Python I need to delete all charaters in a multiline string up to the first occurrence of a given pattern. In Perl this can be done using regular expressions with something like: #remove all chars up to first occurrence of cat or dog or rat $pattern = 'cat|dog|rat' $pagetext =~ s/(.*?)($pattern)/$2/xms; What's the best way to do it in Python?

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  • Grab remaining text after last "/" in a php string.

    - by Roeland
    So, lets say I have a $somestring thats holds the value "main/physician/physician_view". I want to grab just "physician_view". I want it to also work if the passed string was "main/physician_view" or "site/main/physician/physician_view". Hopefully my question makes sense. Any help would be appreciated!

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  • How to manipulate file paths intelligently in .Net 3.0?

    - by Hamish Grubijan
    Scenario: I am maintaining a function which helps with an install - copies files from PathPart1/pending_install/PathPart2/fileName to PathPart1/PathPart2/fileName. It seems that String.Replace() and Path.Combine() do not play well together. The code is below. I added this section: // The behavior of Path.Combine is weird. See: // http://stackoverflow.com/questions/53102/why-does-path-combine-not-properly-concatenate-filenames-that-start-with-path-dir while (strDestFile.StartsWith(@"\")) { strDestFile = strDestFile.Substring(1); // Remove any leading backslashes } Debug.Assert(!Path.IsPathRooted(strDestFile), "This will make the Path.Combine(,) fail)."); in order to take care of a bug (code is sensitive to a constant @"pending_install\" vs @"pending_install" which I did not like and changed (long story, but there was a good opportunity for constant reuse). Now the whole function: //You want to uncompress only the files downloaded. Not every file in the dest directory. private void UncompressFiles() { string strSrcDir = _application.Client.TempDir; ArrayList arrFiles = new ArrayList(); GetAllCompressedFiles(ref arrFiles, strSrcDir); IEnumerator enumer = arrFiles.GetEnumerator(); while (enumer.MoveNext()) { string strDestFile = enumer.Current.ToString().Replace(_application.Client.TempDir, String.Empty); // The behavior of Path.Combine is weird. See: // http://stackoverflow.com/questions/53102/why-does-path-combine-not-properly-concatenate-filenames-that-start-with-path-dir while (strDestFile.StartsWith(@"\")) { strDestFile = strDestFile.Substring(1); // Remove any leading backslashes } Debug.Assert(!Path.IsPathRooted(strDestFile), "This will make the Path.Combine(,) fail)."); strDestFile = Path.Combine(_application.Client.BaseDir, strDestFile); strDestFile = strDestFile.Replace(Path.GetExtension(strDestFile), String.Empty); ZSharpLib.ZipExtractor.ExtractZip(enumer.Current.ToString(), strDestFile); FileUtility.DeleteFile(enumer.Current.ToString()); } } Please do not laugh at the use of ArrayList and the way it is being iterated - it was pioneered by a C++ coder during a .Net 1.1 era. I will change it. What I am interested in: what is a better way of replacing PathPart1/pending_install/PathPart2/fileName with PathPart1/PathPart2/fileName within the current code. Note that _application.Client.TempDir is just _application.Client.BaseDir + @"\pending_install". While there are many ways to improve the code, I am mainly concerned with the part which has to do with String.Replace(...) and Path.Combine(,). I do not want to make changes outside of this function. I wish Path.Combine(,) took an optional bool flag, but it does not. So ... given my constraints, how can I rework this so that it starts to sucks less? Thanks!

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  • Bit Flipping in Hex

    - by freyrs
    I have an 8 digit hexadecimal number of which I need certain digits to be either 0 or f. Given the specific place of the digits is there a quick way to generate the hex number with those places "flipped" to f. For example: flip_digits(1) = 0x000000f flip_digits(1,2,4) = 0x0000f0ff flip_digits(1,7,8) = 0xff00000f I'm doing this on an embedded device so I can't call any math libraries, I suspect it can be done with just bit shifts but I can't quite figure out the method. Any sort of solution (Python, C, Pseudocode) will work. Thanks in advance.

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  • How is the "click to view more" function implemented?

    - by bobo
    We often see websites that display first few lines of an article and then append ... [More] so that people who are interested in can click on it to view the full article. To implement this functionality, we first need to find out where the article text should be cut to append the ... [More]. Since there must be some HTML/ CSS coupled with the article text, we must remember to ignore them when calculating the length of the text. But there is something I just can't figure it out, if more than one language is mixed in the first few lines of the article text, the length of the text will be very difficult to calculate since the characters can be of variable length. How should we solve this problem?

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  • Using Apache Velocity with StringBuilders/CharSequences

    - by mindas
    We are using Apache Velocity for dynamic templates. At the moment Velocity has following methods for evaluation/replacing: public static boolean evaluate(Context context, Writer writer, String logTag, Reader reader) public static boolean evaluate(Context context, Writer out, String logTag, String instring) We use these methods by providing StringWriter to write evaluation results. Our incoming data is coming in StringBuilder format so we use StringBuilder.toString and feed it as instring. The problem is that our templates are fairly large (can be megabytes, tens of Ms on rare cases), replacements occur very frequently and each replacement operation triples the amount of required memory (incoming data + StringBuilder.toString() which creates a new copy + outgoing data). I was wondering if there is a way to improve this. E.g. if I could find a way to provide a Reader and Writer on top of same StringBuilder instance that only uses extra memory for in/out differences, would that be a good approach? Has anybody done anything similar and could share any source for such a class? Or maybe there any better solutions to given problem?

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  • C#: How to detect . in string and insert a space after it/How to insert space after n chars?

    - by Sam Gentile
    Suppose I have a long string like "4600airportburlingame150anzablvd.burlingamecalifornia94010". My code is breaking on this string. This is UNUSUAL. 99% of entries will NOT have a period. The CSS in the browser wraps IF there are spaces in the string and there isn't any here. How do I detect the period (".") and insert a space directly after it? Remember 99% of strings will NOT have a period in them. The code has to detect if it has a period and if so, do the insertion, otherwise not. If I determine a maximum string length, how do I insert a space at some length? Thanks

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  • How to insert zeros between bits in a bitmap?

    - by anatolyg
    I have some performance-heavy code that performs bit manipulations. It can be reduced to the following well-defined problem: Given a 13-bit bitmap, construct a 26-bit bitmap that contains the original bits spaced at even positions. To illustrate: 0000000000000000000abcdefghijklm (input, 32 bits) 0000000a0b0c0d0e0f0g0h0i0j0k0l0m (output, 32 bits) I currently have it implemented in the following way in C: if (input & (1 << 12)) output |= 1 << 24; if (input & (1 << 11)) output |= 1 << 22; if (input & (1 << 10)) output |= 1 << 20; ... My compiler (MS Visual Studio) turned this into the following: test eax,1000h jne 0064F5EC or edx,1000000h ... (repeated 13 times with minor differences in constants) I wonder whether i can make it any faster. I would like to have my code written in C, but switching to assembly language is possible. Can i use some MMX/SSE instructions to process all bits at once? Maybe i can use multiplication? (multiply by 0x11111111 or some other magical constant) Would it be better to use condition-set instruction (SETcc) instead of conditional-jump instruction? If yes, how can i make the compiler produce such code for me? Any other idea how to make it faster? Any idea how to do the inverse bitmap transformation (i have to implement it too, bit it's less critical)?

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  • Finding all instances of a substring in a string

    - by Mr Aleph
    In my last question I asked about parsing the links out of an HTML page. Since I haven't found a solution yet I thought I tried something else in the meantime: search for every <a href= and copy whatever is there until I hit a </a>. Now, my C is a bit rusty but I do remember i can use strstr() to get the first instance of that string, but how do I get the rest? Any help is appreciated. PS: No. This is not homework on school or something like that. Just so you know.

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  • Print one word from a string in python

    - by Shai
    Hi, How can i print only certain words from a string in python ? lets say i want to print only the 3rd word (which is a number) and the 10th one while the text length may be different each time mystring = "You have 15 new messages and the size is 32000" thanks.

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  • python - remove string from words in an array

    - by tekknolagi
    #!/usr/bin/python #this looks for words in dictionary that begin with 'in' and the suffix is a real word wordlist = [line.strip() for line in open('/usr/share/dict/words')] newlist = [] for word in wordlist: if word.startswith("in"): newlist.append(word) for word in newlist: word = word.split('in') print newlist how would I get the program to remove the string "in" from all the words that it starts with? right now it does not work

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