Search Results

Search found 8593 results on 344 pages for 'regular expression'.

Page 101/344 | < Previous Page | 97 98 99 100 101 102 103 104 105 106 107 108  | Next Page >

• Does replacing statements by expressions using the C++ comma operator could allow more compiler opti

  - by Gabriel Cuvillier

  The C++ comma operator is used to chain individual expressions, yielding the value of the last executed expression as the result. For example the skeleton code (6 statements, 6 expressions): step1; step2; if (condition) step3; return step4; else return step5; May be rewritten to: (1 statement, 6 expressions) return step1, step2, condition? step3, step4 : step5; I noticed that it is not possible to perform step-by-step debugging of such code, as the expression chain seems to be executed as a whole. Does it means that the compiler is able to perform special optimizations which are not possible with the traditional statement approach (specially if the steps are const or inline)? Note: I'm not talking about the coding style merit of that way of expressing sequence of expressions! Just about the possible optimisations allowed by replacing statements by expressions.

  Read the article

• Could not see memory being released on closing MFC modal dialog that hosts wpf user control using HW

  - by Naveen Chiluka

  This is in continuation with my last question posted "Continuous Memory leak while using WpfHWndSource" I have to load an WPF User Control in an MFC Modal Dialog that is being invoked from the ocx control. For this I have created a MFC Regular Dll(Mixed Mode Regular dll with clr option enabled), I have created a modal dialog which will host wpf user control using HWndSource. This exported dialog is placed as a child Dialog of the above MFC dialog that is being invoked from the ocx. Ny intermediate dialog uses C++/Cli code. When the main MFC dialog is closed, I am deleteing the ptr reference of the intermediate dialog created on the heap. In the the dipose of the .Net User Control, I have set most of the references that I have created to null, unsubscribed to the events (to avoid weak refernces), unbinded from the propertes(by using clear binding). Called delete on the HwndSource and the user control(which basically calls the dispose method). But I do not see complete memory being released. Any help would be greatful.

  Read the article

• With Maven, how would I prevent Maven from filtering certain properties but allowing others?

  - by Benny

  The problem is that I'm trying to build a project that has in its resources a build.xml file. Basically, I package my project as a jar with Maven2, and then use ant installer to install my project. There is a property in the build.xml file that I need to filter called build.date, but there are other properties that I don't want to filter, like ${basedir}, because it's used by the ant installer but gets replaced by Maven's basedir variable. So, I need to somehow tell Maven to filter ${build.date}, but not ${basedir}. I tried creating a properties file as a filter with "basedir=${basedir}" as one of the properties, but I get the following error: Resolving expression: '${basedir}': Detected the following recursive expression cycle: [basedir] Any suggestions would be much appreciated. Thanks, B.J.

  Read the article

• Is it a good idea to use .Net for commercial software?

  - by user146780

  I was playing around with .Net reflector today and realized that Miicrosoft's entire Expression suite is written in .Net. As a result I was pretty much able to see the underlying code for expression. This makes it far easier than binary to break copy protection. I think that that's a big deal. Is it generally recommended to make commercial software in .Net where it is fairly easy to see the source code down to the variable names? I was surprised that Microsoft didn't at least dotfescate it. Thanks

  Read the article

• Determine if a string contains only alphanumeric characters (or a space)

  - by dreamlax

  I'm learning C++ and I am writing a function that determines whether a string contains only alphanumeric characters and spaces. I suppose I am effectively testing whether it matches the regular expression ^[[:alnum:] ]+$ but without using regular expressions. I have seen a lot of algorithms revolve around iterators, so I tried to find a solution that made use of iterators, and this is what I have: #include <algorithm> static inline bool is_not_alnum_space(char c) { return !(isalpha(c) || isdigit(c) || (c == ' ')); } bool string_is_valid(const std::string &str) { return find_if(str.begin(), str.end(), is_not_alnum_space) == str.end(); } Is there a better solution, or a “more C++” way to do this?

  Read the article

• XPath filter not empty attribute

  - by Marcos Buarque

  Hi, I need to filter a XPath expression to grab only a certain attribute as not empty. I tried this: <xsl:template match="DocumentElement/QueryResults[string(@FileName)]"> and this: <xsl:template match="DocumentElement/QueryResults[string-length(@FileName)>0]"> but it did not work. I need the same kind of data returning from the folloing XPath expression... <xsl:template match="DocumentElement/QueryResults"> ... but filtered to avoid items with empty attribute @FileName. Thanks!

  Read the article

• How to initialize F# list when size is unknown, using while..do loop

  - by James Black

  I have a function that will parse the results of a DataReader, and I don't know how many items are returned, so I want to use a while..do loop to iterate over the reader, and the outcome should be a list of a certain type. (fun(reader) -> [ while reader.Read() do new CityType(Id=(reader.GetInt32 0), Name=(reader.GetString 1), StateName=(reader.GetString 2)) ]) This is what I tried, but the warning I get is: This expression should have type 'unit', but has type 'CityType'. Use 'ignore' to discard the result of the expression, or 'let' to bind the result to a name. So what is the best way to iterate over a DataReader and create a list?

  Read the article

• Can I mix compile time string comparison with MPL templates?

  - by Negative Zero

  I got this compile time string comparison from another thread using constexpr and C++11 (http://stackoverflow.com/questions/5721813/compile-time-assert-for-string-equality). It works with constant strings like "OK" constexpr bool isequal(char const *one, char const *two) { return (*one && *two) ? (*one == *two && isequal(one + 1, two + 1)) : (!*one && !*two); } I am trying to use it in the following context: static_assert(isequal(boost::mpl::c_str<boost::mpl::string<'ak'>>::value, "ak"), "should not fail"); But it gives me an compilation error of static_assert expression is not an constant integral expression. Can I do this?

  Read the article

• Connecting to Google app email servers in Python to send from an alias

  - by user575228

  I'm looking to send many emails via Python and would like to connect to Google's email servers to send it from my company email address (it's for work). I've got working code for sending the email through the old company email ([email protected]) which is our login, but can't figure out how to send it through the alias ([email protected]) we use frequently. Long story short, logging in with my regular Google Apps account won't do and I need to sign in with an alias (nickname) instead. Alternatively, I can sign with the regular account ([email protected]) but send via a different email ([email protected]). Working in python and pretty new to programming, but am a good listener! (It's like this question: Google Apps - Send email from a nickname but in Python).

  Read the article

• .NET C# setting the value of a field defined by a lambda selector

  - by Frank Michael Kraft

  I have a generic class HierarchicalBusinessObject. In the constructor of the class I pass a lambda expression that defines a selector to a field of TModel. protected HierarchicalBusinessObject (Expression<Func<TModel,string>> parentSelector) A call would look like this, for example: public class WorkitemBusinessObject : HierarchicalBusinessObject<Workitem,WorkitemDataContext> { public WorkitemBusinessObject() : base(w => w.SuperWorkitem, w => w.TopLevel == true) { } } I am able to use the selector for read within the class. For example: sourceList.Select(_parentSelector.Compile()).Where(... Now I am asking myself how I could use the selector to set a value to the field. Something like selector.Body() .... Field...

  Read the article

• Multiline Find & Replace in Visual Studio

  - by hawbsl

  Can it be done? We're using either VS2005 or VS2008. I don't mean regular expressions - which have their place - but plain old text find & replace. I know we can do it (at a pinch) with regular expressions using the \n tag but prefer not to get tangled up in regex escapes characters, plus there's a readability issue. If it can't be done what plain and simple (free) alternative are people using? That doesn't involve knocking up our own macro.

  Read the article

• Interning strings in Java

  - by Tiny

  The following segment of code interns a string. String str1="my"; String str2="string"; String concat1=str1+str2; concat1.intern(); System.out.println(concat1=="mystring"); The expression concat1=="mystring" returns true because concat1 has been interned. If the given string mystring is changed to string as shown in the following snippet. String str11="str"; String str12="ing"; String concat11=str11+str12; concat11.intern(); System.out.println(concat11=="string"); The comparison expression concat11=="string" returns false. The string held by concat11 doesn't seem to be interned. What am I overlooking here? I have tested on Java 7, update 11.

  Read the article

• how to use expressons as function parameters in powershell

  - by rmeador

  This is a very simple task in every language I have ever used, but I can't seem to figure it out in PowerShell. An example of what I'm talking about in C: abs(x + y) The expression x + y is evaluated, and the result passed to abs as the parameter... how do I do that in PowerShell? The only way I have figured out so far is to create a temporary variable to store the result of the expression, and pass that. PowerShell seems to have very strange grammar and parsing rules that are constantly catching me by surprise, just like this situation. Does anyone know of documentation or a tutorial that explains the basic underlying theory of the language? I can't believe these are all special cases, there must be some rhyme or reason that no tutorial I have yet read explains. And yes, I've read this question, and all of those tutorials are awful. I've pretty much been relegated to learning from existing code.

  Read the article

• ASP.NET MVC2 - specific fields in form pass via a specific object?

  - by ile

  In database I have Contacts table: ContactID (int) FirstName (varchar) LastName (varchar) ... XmlFields (xml) // This field is xml type To create a new contact, I created two classes - one for regular fields and other to display fields from XmlFields field. In Controller, I have following: public ActionResult Create(Contact contact, FormCollection collection) ... Regular field I catch with contact object and those that need to be stored as xml in XmlFields I try to catch with collection object. Problem is that collection object catches all fields, so I wonder if it is possible to isolate xml fields when posting to a specific object so that I can easily manipulate with them. I need this in separated objects because these xml fields are going to be generated dynamically and will be different for every user. Thanks in advance, Ile

  Read the article

• How can I request local pages in the background of an ASP.NET MVC app?

  - by flipdoubt

  My ASP.NET MVC app needs to run a set of tasks at startup and in the background at a regular interval. I have implemented each task as a controller action and listed the app-relative path to the action in the database. I implemented a TaskRunner process that gets the urls from the database and requests each one at a regular interval using WebRequest.Create, but this throws a UriFormatException. I cannot use this answer or any code that plucks values from HttpContext.Current.Request without getting an HttpException with the message "Request is not available in this context". The Request object is not available because my code uses System.Threading.Timer to do background processing, as recommended here. Here are my questions: Is there really no way to make local web requests within an ASP.NET web app? Is there really no way to dynamically ascertain the root path to the web app even using static dependencies in ASP.NET? I was trying to avoid storing the app's root path in the database (as FogBugz does with its "Maintenance Path"), but is this best option?

  Read the article

• Build a decision tree for classification of large amount data,using python?

  - by kaushik

  Hi,i am working for speech synthesis.In this i have a large number of pronunciation for each phone i.e alphabet and need to classify them according to few feature such as segment size(int) and alphabet itself(string) into a smaller set suitable for that particular context. For this purpose,i have decided to use decision tree for classification.the data to be parsed is in the S expression format.eg:((question)(LEFTNODE)(RIGHTNODE)). i hav idea for building decision tree for normal buit in type such as list..looking for suggestion for implementation for S expression.. kindly help.. Thanks in advance.. Note:this question may look similar to my prev post,srry if cant giv multiple post.already edited it many times so though of wirting new question instead of editing again

  Read the article

• preg replace h2 tags with spaces [closed]

  - by fire

  Possible Duplicate: PHP Regular express to remove <h1> tags (and their content) I have some HTML that looks like this: <h2> Fund Management</h2> <p> The majority of property investments are now made via our Funds.</p> Trying to use a regular expression to strip h2 tags but doesn't work because of the space between the opening and closing h2 tags. preg_replace('/<h2>(.+?)<\/h2>/', '', $content); Any ideas on how to make this work? Also I would ideally like it to replace h1-h6 tags so maybe it needs [1-6] or something?

  Read the article

• Determining filetype of file in assets folder

  - by ChaimKut

  Question: How do you programmatically distinguish between directories and regular files in the assets folder? When using AssetManager to access files in the assets folder, it seems impossible to determine if a file is in fact a file or a directory. You get the list of files from the list method and then open the file using the open method. I thought perhaps using the openFd method to get the asset file descriptor (and then subsequently requesting the normal file descriptor) would provide me some information. But requesting the file descriptor for a directory results in an IOException (which makes sense since what would it mean for a directory to have a file descriptor...?). Currently I'm relying on that IOException (resulting from attemptng to open a directory in the assets folder) in order to determine if a file is in fact a directory. (Opening a regular file works just fine). This seems like a bad idea. Any other suggestions to distinguish between a file and a directory?

  Read the article

• Extract multiple values from one column in MySql

  - by Neil

  I've noticed that MySql has an extensive search capacity, allowing both wildcards and regular expressions. However, I'm in somewhat in a bind since I'm trying to extract multiple values from a single string in my select query. For example, if I had the text "<span>Test</span> this <span>query</span>", perhaps using regular expressions I could find and extract values "Test" or "query", but in my case, I have potentially n such strings to extract. And since I can't define n columns in my select statement, that means I'm stuck. Is there anyway I could have a list of values (ideally separated by commas) of any text contained with span tags? In other words, if I ran this query, I would get "Test,query" as the value of spanlist: select <insert logic here> as spanlist from HtmlPages ...

  Read the article

• Problem with do construct in haskell

  - by Anonymous Coward

  Hello everyone I'm trying to learn Haskell and want to write a small program which prints the content of a file to the screen. When I load it into GHCi I get the following error: The last statement in a 'do' construct must be an expression I know this question has be asked already here: Haskell — “The last statement in a 'do' construct must be an expression”. Even though my code is very similar I still can't figure out the problem. If anyone could point out the problem to me I'd be very thankful. module Main (main) where import System.IO import System(getArgs) main :: IO() main = do args <- getArgs inh <- openFile $ ReadMode head args printFile inh hClose inh printFile :: Handle -> IO () printFile handle = do end <- hIsEOF handle if end then return () else do line <- hGetLine handle putStrLn line printFile handle

  Read the article

• Linq Query Giving Error

  - by user275561

  I am getting this error when I use the Linq expression of var emp = _testModel.Where(m => m.Date == DateTime.Now).Select(m=>m); 'System.Collections.Generic.IEnumerable' does not contain a definition for 'System' and no extension method 'System' accepting a first argument of type 'System.Collections.Generic.IEnumerable' could be found (are you missing a using directive or an assembly reference?). I have google'd and looked everywhere by I have no idea what it is talking about? It doesn't throw an exception. The only way I found out about this was stepping through the expression.

  Read the article

• Why does jquery button take a second to refresh after updating a page using ajax

  - by oo

  when i refresh a part of a webpage that has a jquery ui button, it seems like I have to call: $(":button").button(); again or it shows up as a regular button. Thats fine but when i do this, it still shows up as a regular button for a split second before converting to the styling of the jquery theme. is there anyway to avoid this as it looks a bit messy. NOTE: i noticed that this is for anything that i am theming using jquery ui like autocomplete, button, etc. so its not button specific issue.

  Read the article

• jQuery and regex for adding icons to specific links?!

  - by rayne

  I'm using jQuery to add icons to specific links, e.g. a myspace icon for sites starting with http://myspace.com etc. However, I can't figure out how to use regular expressions (if that's even possible here), to make jQuery recognize the link either with or without "www." (I'm very bad at regular expressions in general). Here are two examples: $("a[href^='http://www.last.fm']").addClass("lastfm").attr("target", "_blank"); $("a[href^='http://livejournal.com']").addClass("livejournal").attr("target", "_blank"); They work fine, but I now I want the last.fm link to work with http://last.fm, http://www.last.fm and http://www.lastfm.de. Currently it only works for www.last.fm. I also would like to make the livejournal link work with subdomains links like http://username.livejournal.com How can I do that? Thanks in advance!

  Read the article

• How can I make a Jeditable (jQuery) span activate editing on more than one event?

  - by JonathanHayward

  For the jQuery extension Jeditable, one of the parameters that can be specified is which DOM event will turn a div/span/... into a text input/textarea/... I would like to have more than one event serve as a trigger; that is, I would like either a click event or a contextmenu event to turn a span into an in-place edit area. Is there a graceful way to do this without forking Jeditable? --edit-- An example of code specifying the event is below. The parameter is optional, defaulting to a regular click. $(".edit_rightclick").editable("/ajax/save", { cancel: "Cancel", submit: "OK", tooltip: "Right click to edit.", event: "contextmenu", }); Calling twice, once for the regular click event with the event unspecified, and one for the contextmenu event (right-click if there are no switched mouse buttons or anything like that) does not seem to produce the intended effect of an element becoming editable in place on a click from either mouse button.

  Read the article

• Python __setattr__ and __getattr__ for global scope?

  - by KT

  Suppose I need to create my own small DSL that would use Python to describe a certain data structure. E.g. I'd like to be able to write something like f(x) = some_stuff(a,b,c) and have Python, instead of complaining about undeclared identifiers or attempting to invoke the function some_stuff, convert it to a literal expression for my further convenience. It is possible to get a reasonable approximation to this by creating a class with properly redefined __getattr__ and __setattr__ methods and use it as follows: e = Expression() e.f[e.x] = e.some_stuff(e.a, e.b, e.c) It would be cool though, if it were possible to get rid of the annoying "e." prefixes and maybe even avoid the use of []. So I was wondering, is it possible to somehow temporarily "redefine" global name lookups and assignments? On a related note, maybe there are good packages for easily achieving such "quoting" functionality for Python expressions?

  Read the article

< Previous Page | 97 98 99 100 101 102 103 104 105 106 107 108  | Next Page >