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  • XPath expression for a phpBB forum

    - by Biff
    I'm writing a Greasemonkey script, and I wanted to change the text of a forum post on a phpBB2 forum by using XPath to select the body of the post that occurs after a certain username, but the whole thing is a giant mess of tables. <tr> <td> <span class="name"> <a> <b>username</b> </span> <span></span> </td> <td> <table> <tbody> <tr></tr> <tr></tr> <tr> <td> <span class="postbody">text of post</span> <span></span> </td> </tr> </tbody> </table> </td> </tr> I need to get the postbody span that happens after the username in the b tag equals a certain name, and then mess with the text.

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  • Python regular expression implementation details

    - by Tom
    A question that I answered got me wondering: How are regular expressions implemented in Python? What sort of efficiency guarantees are there? Is the implementation "standard", or is it subject to change? I thought that regular expressions would be implemented as DFAs, and therefore were very efficient (requiring at most one scan of the input string). Laurence Gonsalves raised an interesting point that not all Python regular expressions are regular. (His example is r"(a+)b\1", which matches some number of a's, a b, and then the same number of a's as before). This clearly cannot be implemented with a DFA. So, to reiterate: what are the implementation details and guarantees of Python regular expressions? It would also be nice if someone could give some sort of explanation (in light of the implementation) as to why the regular expressions "cat|catdog" and "catdog|cat" lead to different search results in the string "catdog", as mentioned in the question that I referenced before.

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  • Regular expression that contains in it...

    - by Fabiano PS
    I need my regexp to match, all the highlighted words, in order, following: Fri/Feb/10 - *Nesta* manh\303\203\302\243,* @*anestesya *entrou* \303\240s 08:18AM Fri/Feb/10 - *Nesta* tarde,* @*pernas *saiu* \303\240s 08:18AM I was trying something like: /[?=Nesta.?=@.?=(entrou|saiu)]/ So I don't care what is in between as long as it has: ' Nesta ' AND ' @' AND ' entrou ' OR ' saiu '

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  • Regular Expression Fill-Down

    - by richardtallent
    I have a plain text file something like this: Ford\tTaurus F-150 F-250 Toyota\tCamry Corsica In other words, a two-level hierarchy where the first child is on the same line as the parent, but subsequent children on lines following, distinguished from being a parent by a two-space prefix (\t above represents a literal tab in the text). I need to convert to this using RegEx: Ford\tTaurus Ford\tF-150 Ford\tF-250 Toyota\tCamry Toyota\tCorsica So, I need to capture the parent (text between \r\n and \t not starting with \s\s), and apply that in the middle of any \r\n\s\s found until the next parent. I have a feeling this can be done with some sort of nested groups, but I think I need more caffeine or something, can't seem to work out the pattern. (Using .NET with IgnoreWhitespace off and Multiline off)

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  • Having trouble with Regular Expression and Ampersand

    - by ajax81
    Hi All, I'm having a bit of trouble with regex's (C#, ASP.NET), and I'm pretty sure I'm doing something fundamentally wrong. My task is to bind a dynamically created gridview to a datasource, and then iterate through a column in the grid, looking for the string "A&I". An example of what the data in the cell (in template column) looks like is: Name: John Doe Phone: 555-123-1234 Email: [email protected] Dept: DHS-A&I-MRB Here's the code I'm using to find the string value: foreach(GridViewRow gvrow in gv.Rows) { Match m = Regex.Match(gvrow.Cells[6].Text,"A&I"); if(m.Success) { gvrow.ForeColor = System.Drawing.Color.Red; } } I'm not having any luck with any of these variations: "A&I" "[A][&][I]" But when I strictly user "&", the row does turn red. Any suggestions? Thanks, Dan

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  • Where to insert 'orderby' expression in this linq-to-sql query

    - by ile
    var result = db.PhotoAlbums.Select(albums => new PhotoAlbumDisplay { AlbumID = albums.AlbumID, Title = albums.Title, Date = albums.Date, PhotoID = albums.Photos.Select(photo => photo.PhotoID).FirstOrDefault().ToString() }); Wherever I try to put orderby albums.AlbumID descending I get error. Someone knows solution? Thanks!

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  • How to match filetype with regular expression?

    - by Sanarothe
    Hi. I'm stuck trying to get a regex to match a filetype in a sorting script. Dir.foreach(savedirs[0]) do |x| puts "Matching " + x + " against filetypes." case x when x.match(/^.*\.exe$/i) then puts x when x.match(/\.jpe?g$/) then FileUtils.move(x, sortpath[".exe"], :verbose => true) when x =~ /\.jpg$/ then FileUtils.move(x, sortpath[".jpg"]) end end I can't get any of these to match on in windows. All I need is to confirm that a given filename matches against compatible filetypes.

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  • Regular expression in BASH

    - by Ryan
    Hello everyone, I was hoping someone could answer my quick question as I am going nuts! I have recently started learning regular expressions in my Java programming however am a little confused how to get certain features to work correctly directly in BASH. For example, the following code is not working as I think it should. echo 2222 | grep '2\{2\}' I am expecting it to return: 22 I have tried variations of it including: echo 2222 | grep '2{2}' echo 2222 | grep -P '2\{2\}' echo 2222 | grep -E '2\{2\}' However I am completely out of ideas. I'm sure this is a simple parameter / syntax fix and would love some help! P.S I've done tons of googling and every reference I find does not work in BASH; regex's can run on so many different platforms and engines =/

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  • Regular Expression (preg_match_all)

    - by Helena
    This is my code: <?php $matchWith = "http://videosite.com/ID123"; preg_match_all('\S/videosite\.com\/(\w+)\S/i', $matchWith, $matches); foreach($matches[1] as $value) { print '<a href="http://videosite.com/'.$value.'"> Hyperlink </a>'; } ?> It's not working. I want to exclude every match that has a whitespace before or after the Link (with the ID). I used \S for this. For example if: $matchWith = " http://videosite.com/ID123 "; it should not display anything. Thank you.

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  • How to find level of employee position using RECURSIVE COMMON TABLE EXPRESSION

    - by user309381
    ;with Ranked(Empid,Mngrid,Empnm,RN,level) As ( select Empid,Mngrid ,Empnm ,row_number() over (order by Empid)AS RN , 0 as level from dbo.EmpMngr ), AnchorRanked(Empid,Mngrid,Empnm,RN,level) AS(select Empid,Mngrid,Empnm,RN ,level from Ranked ), RecurRanked(Empid,Mngrid,Empnm,RN,level) AS(select Empid,Mngrid,Empnm,RN,level from AnchorRanked Union All select Ranked.Empid,Ranked.Mngrid,Ranked.Empnm,Ranked.RN,Ranked.level + 1 from Ranked inner join RecurRanked on Ranked.Empid = RecurRanked.Empid AND Ranked.RN = RecurRanked.RN+1) select Empid,Empnm,level from RecurRanked

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  • Is is possible to populate a datatable using a Lambda expression(C#3.0)

    - by deepak.kumar.goyal
    I have a datatable. I am populating some values into that. e.g. DataTable dt =new DataTable(); dt.Columns.Add("Col1",typeof(int)); dt.Columns.Add("Col2",typeof(string)); dt.Columns.Add("Col3",typeof(DateTime)); dt.Columns.Add("Col4",typeof(bool)); for(int i=0;i< 10;i++) dt.Rows.Add(i,"String" + i.toString(),DateTime.Now,(i%2 == 0)?true:false); There is nothing wrong in this program and gives me the expected output. However, recently , I am learning Lambda and has done some basic knowledge. With that I was trying to do the same thing as under Enumerable.Range(0,9).Select(i = > { dt.Rows.Add(i,"String" + i.toString(),DateTime.Now,(i%2 == 0)?true:false); }); But I am unsuccessful. Is my approach correct(Yes I know that I am getting compile time error; since not enough knowledge on the subject so far)? Can we achieve this by the way I am doing is a big doubt(as I donot know.. just giving a shot). If so , can some one please help me in this regard. I am using C#3.0 and dotnet framework 3.5 Thanks

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  • javascript setTimeout() first argument: expression error

    - by Jonah
    function Timer() { this.initialTime = 0; this.timeStart = null; this.getTotalTime = function() { timeEnd = new Date(); diff = timeEnd.getTime() - this.timeStart.getTime(); return diff+this.initialTime; }; this.formatTime = function() { interval = new Date(this.getTotalTime()); return interval.getHours() + ":" + interval.getMinutes() + ":" + interval.getSeconds(); }; this.start = function() { this.timeStart = new Date(); setTimeout("this.updateTime()", 1000); }; this.updateTime = function() { alert(this.formatTime()); setTimeout("this.updateTime()", 1000); }; } timer = new Timer(); timer.start(); I am getting an error: this.updateTime is not a function Any ideas? Thanks

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  • Template with constant expression: error C2975 with VC++2008

    - by Arman
    Hello, I am trying to use elements of meta programming, but hit the wall with the first trial. I would like to have a comparator structure which can be used as following: intersect_by<ID>(L1.data, L2.data, "By ID: "); intersect_by<IDf>(L1.data, L2.data, "By IDf: "); Where: struct ID{};// Tag used for original IDs struct IDf{};// Tag used for the file position //following Boost.MultiIndex examples template<typename Tag,typename MultiIndexContainer> void intersect_by( const MultiIndexContainer& L1,const MultiIndexContainer& L2,std::string msg, Tag* =0 /* fixes a MSVC++ 6.0 bug with implicit template function parms / ) { / obtain a reference to the index tagged by Tag */ const typename boost::multi_index::index<MultiIndexContainer,Tag>::type& L1_ID_index= get<Tag>(L1); const typename boost::multi_index::index<MultiIndexContainer,Tag>::type& L2_ID_index= get<Tag>(L2); std::set_intersection( L1_ID_index.begin(), L1_ID_index.end(), L2_ID_index.begin(), L2_ID_index.end(), std::inserter(s, s.begin()), strComparator() // Here I get the C2975 error ); } template<int N> struct strComparator; template<> struct strComparator<0>{ bool operator () (const particleID& id1, const particleID& id2) const { return id1.ID struct strComparator<1{ bool operator () (const particleID& id1, const particleID& id2) const { return id1.IDf }; What I am missing? kind regards Arman.

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  • Which LINQ expression is faster

    - by Vlad Bezden
    Hi All In following code public class Person { public string Name { get; set; } public uint Age { get; set; } public Person(string name, uint age) { Name = name; Age = age; } } void Main() { var data = new List<Person>{ new Person("Bill Gates", 55), new Person("Steve Ballmer", 54), new Person("Steve Jobs", 55), new Person("Scott Gu", 35)}; // 1st approach data.Where (x => x.Age > 40).ToList().ForEach(x => x.Age++); // 2nd approach data.ForEach(x => { if (x.Age > 40) x.Age++; }); data.ForEach(x => Console.WriteLine(x)); } in my understanding 2nd approach should be faster since it iterates through each item once and first approach is running 2 times: Where clause ForEach on subset of items from where clause. However internally it might be that compiler translates 1st approach to the 2nd approach anyway and they will have the same performance. Any suggestions or ideas? I could do profiling like suggested, but I want to understand what is going on compiler level if those to lines of code are the same to the compiler, or compiler will treat it literally. Thanks in advance for your help.

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  • PHP regular expression find and append to string

    - by Gary
    I'm trying to use regular expressions (preg_match and preg_replace) to do the following: Find a string like this: {%title=append me to the title%} Then extract out the title part and the append me to the title part. Which I can then use to perform a str_replace(), etc. Given that I'm terrible at regular expressions, my code is failing... preg_match('/\{\%title\=(\w+.)\%\}/', $string, $matches); What pattern do I need? :/

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  • Matching Regular Expression in Javascript and PHP problem...

    - by Frankie
    I can't figure out how to get the same result from my Javscript as I do from my PHP. In particular, Javascript always leaves out the backslashes. Please ignore the random forward and backslashes; I put them there so that I can cover my basis on a windows system or any other system. Output: Input String: "/root\wp-cont ent\@*%'i@$@%$&^(@#@''mage6.jpg:" /root\wp-content\image6.jpg (PHP Output) /rootwp-contentimage6.jpg (Javscript Output) I would appreciate any help! PHP: <?php $path ="/root\wp-cont ent\@*%'i@$@%$&^(@#@''mage6.jpg:"; $path = preg_replace("/[^a-zA-Z0-9\\\\\/\.-]/", "", $path); echo $path; ?> Javascript: <script type="text/javascript"> var path = "/root\wp-cont ent\@*%'i@$@%$&^(@#@''mage6.jpg:"; //exact same string as PHP var regx = /[^a-zA-Z0-9\.\/-]/g; path = path.replace(regx,""); document.write("<br>"+path); </script>

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  • Convert this Linq query from query syntax to lambda expression

    - by Jinkinz
    I'm not sure I like linq query syntax...its just not my preference. But I don't know what this query would look like using lambda expressions, can someone help? from securityRoles in user.SecurityRoles from permissions in securityRoles.Permissions where permissions.SecurableEntity.Name == "Unit" && permissions.PermissionType.Name == "Read" orderby permissions.PermissionLevel.Value descending select permissions There is a many-to-many relationship between users and security roles that makes this extra confusing. Thanks! Kelly

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  • How to use regular expression in lxml xpath?

    - by Arty
    I'm using construction like this: doc = parse(url).getroot() links = doc.xpath("//a[text()='some text']") But I need to select all links which have text beginning with "some text", so I'm wondering is there any way to use regexp here? Didn't find anything in lxml documentation

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