c# - Group objects in List by property in object that is List using LINQ -

-

i have list of objects (name of object ngramm) , object has property - list of strings (name of property rawngramwords). there property of rawngramwords - ngramcount - number of objects in list same rawngramwords (the same lists of strings in different ngramm). if there example 3 objects (ngramm) in list same rawngramwords need 1 ngramm object ngramcount property = 3. other 2 objects same rawngramwords lists should deleted list. used code:

public static list<ngramm> countnwordsinngrams(list<ngramm> listofngramms)     {         list<int> indexesofngramsinlisttodelete = new list<int>();          for(int = 0; < listofngramms.count; i++)         {             for(int j = i+1; j < listofngramms.count; j++)             {                 bool areequivalent = !listofngramms[i].rawngramwords.except(listofngramms[j].rawngramwords).any();                 if(areequivalent == true)                 {                     indexesofngramsinlisttodelete.add(i);                     listofngramms[j].ngramcount = listofngramms[j].ngramcount + listofngramms[i].ngramcount + 1;                  }             }         }          (int = listofngramms.count; >= 0; i--)         {             if (indexesofngramsinlisttodelete.contains(i))             {                 listofngramms.removeat(i);             }         }          return listofngramms;     }

the speed of method slow. (it counts ngramcount error - on whole doesn't matter due slow speed - need way find same lists of strings in these objects). - there way use group count objects same list (rawngramwords) linq? thank you

this example group list of ngramm objects rawngramwords property dictionary<string[], list<ngramm>>.

the key (string[]) of dictionary rawngramwords property of ngramm objects.

assuming ngramm class looks : 

    class ngramm     {         public string[] rawngramwords;         public int ngramcount;     }

you list<ngramm> : 

list<ngramm> listofngramms;  dictionary<string[], list<ngramm>> groupedresults = (from ngramm in listofngramms                 group ngramm ngramm.rawngramwords                 groupedngramms                 select groupedngramms).todictionary(gdc => gdc.key, gdc => gdc.tolist());

on side note, code posted doing few things don't entirely understand reason (re-iterating tail of first iteration example). slowing down.


Comments

Post a Comment

Popular posts from this blog

java - Run spring boot application error: Cannot instantiate interface org.springframework.context.ApplicationListener -

-
i have spring project , try make use spring boot , run @ embadded tomcat following : https://spring.io/guides/gs/rest-service/ this application //@configuration //@enableaspectjautoproxy @springbootapplication @componentscan(basepackages = "gux.prome") public class application { public static void main(string[] args) { springapplication.run(application.class, args); } } if use maven command: mvn spring-boot:run , project starts fine, need debug , run main method @ intelij, exception occurs: exception in thread "main" java.lang.illegalargumentexception: cannot instantiate interface org.springframework.context.applicationlistener : org.springframework.boot.logging.classpathloggingapplicationlistener @ org.springframework.boot.springapplication.createspringfactoriesinstances(springapplication.java:414) @ org.springframework.boot.springapplication.getspringfactoriesinstances(springapplication.java:394) @ org.springframework.bo...
Read more

reactjs - React router and this.props.children - how to pass state to this.props.children -

-
i'm using react-router first time , don't know how think in yet. here's how i'm loading components in nested routes. entry point .js reactdom.render( <router history={hashhistory} > <route path="/" component={app}> <route path="models" component={content}> </route> </router>, document.getelementbyid('app') ); app.js render: function() { return ( <div> <header /> {this.props.children} </div> ); } so child of app content component sent in. i'm using flux , app.js has state , listens changes, don't know how pass state down this.props.children. before using react-router app.js defines children explicitly, passing state natural don't see how now. using couple of react helper methods can add state, props , whatever else this.props.children render: function() { var children = react.ch...
Read more

Excel VBA "Microsoft Windows Common Controls 6.0 (SP6)" Location Changes -

-
i have excel workbook used generate quotations customers. there main page user inputs data, , there buttons generate various pdfs , send them customer. however, 1 user consistently getting error preventing generating , sending pdfs. i beleive "microsoft windows common controls 6.0 (sp6)". it's installed on users' computers. on mine, location "c:\windows\syswow64\mscomctl.ocx" on others "c:\windows\system32\mscomctl.ocx" the user experiencing issues on 32-bit machine, "mscomctl.ocx" file should in system32. have manually put in there, , pointed common controls reference in vba it. issue seems keep reverting looking in syswow64. since folder doesn't exist, can't find it, , can't produce pdfs. i thought perhaps issue user running older version of office (2007) there users on 2013 , 2016. thought perhaps mixture of 64-bit , 32-bit users. user gets sent workbook other users (as quotation process goes further, gets passed ...
Read more