c++ - Operator- overloading (same parameters, different return type) -


how overload minus operator accepting same number of parameters, having different return types?

template class:

template <typename t> t minus (t x, t y) {     return (x - y); }  template <typename t> double absminus (t x, t y) {     double sd = abs(x - y);     return sd; }

operator overloading class:

minus operator-(minus &p, minus &q) {     return (p.something - q.something); }  double operator-(minus &p, minus &q) {     return (p.something() - q.something()); }

when tried compile, gave me following error:

minus.h:25: error: new declaration ‘double operator-(minus&, minus&)’ minus.h:24: error: ambiguates old declaration ‘minus operator-(minus&, minus&)’

no, can't. overloading can done when parameter list different. example:

int myfun(int); double myfun(int);

now calling myfun(10). compiler has no way determine version call.


Comments

Post a Comment

Popular posts from this blog

Change php variable from jquery value using ajax (same page) -

what i'm trying this: i've php global variable $currentid , simple jquery script check if there "id" (page) in hash of url , if yes wanted give value $currentid . i've been reading lot , notice shall use ajax i'm not managing it. my code is: <script type="text/javascript"> $(document).ready(function(){ if (parent.location.hash != '' ) { var thecurrentid = parent.location.hash.split('#')[1]; $.ajax({ url: 'my.php', //current page type: 'post', data: {theid: thecurrentid }, datatype: 'json', success: function () { } }); } // code here }); </script> could me please? thank in advance. php server side language, meaning once has sent data browser, php variables , data cannot changed... however, using ajax, can send request php page , change data in dom based on result. consider th...
Read more

Pull out data related to my apps from Android Play Store and iOS App Store -

i want pull out data related apps (ratings, reviews, etc) google play store , apple app store ? how can accomplish ? i have found open source apis google mentioned not reliable. also there paid apis (e.g. appfigures) available. has idea how able pull data these play stores ?? i looking direction on how can accomplish this. can suggest ? we (appfigures) have been working on developing infrastructure give ability reviews , bunch of other data points major app stores several years :] we make available via our api though may want check out.
Read more

How can I fetch data from a web server in an android application? -

i want retrieve data web server in android application, , don't know begin. should use web services? i recommend these tutorials: connect android php , mysql , json in android , php , mysqli i used these tutorials , managed trying working without difficulty. between them describe each step in how attempting @ each stage, android application, database , web server side , has information included can process , use received information the thing add connect android php , mysql tutorial makes use of mysql_ in php deprecated. better use mysqli why included third link. the basic outline of want this: 1) in android app make request server php script using class this: import java.io.bufferedreader; import java.io.ioexception; import java.io.inputstream; import java.io.inputstreamreader; import java.io.unsupportedencodingexception; import java.util.list; import org.apache.http.httpentity; import org.apache.http.httpresponse; import org.apache.http.namevaluepair...
Read more