module - Bringing items in a template instantiation scope unqualified into local scope -

-

i want bring unqualified names of functions in template working/local scope. eg.:

struct st {     int t = 44; }  template inter(t) { // 'base' template/interface/parameterized-module     alias self = t;      void myfunc(ref self) {         writeln("inter: ", self.stringof, " : ", 11);     } }  template inter(t: st) {       /+ ^^^^^ 'specialization'          implementation template-module type `st`       +/     alias self = t;      void myfunc(ref self self) {         writeln("inter 2 (st)! : ", self.stringof, " : ", self.t);     } }  void main(string[] args){     st s;      /+  here  +/      /+  s.myfunc(s);  +/ // <- want able }

something mixin template work @ cost of lots of needless code duplication (i wouldn't duplicating compiler would have work lots of same code).

put way: yes, ufcs not work in case if bring myfunc(self) scope of main(). question how bring stuff inside template's scope openly/unqualified scope? or yet way: imagine i'm making nested module (i don't know how this) that's inside mixin template, instantiating mixin type want, importing in mymodule_templ!mytype working scope.

ask clarifications in comments please. questions seldom readable on first formulation of them. thanks!

you mentioned mixin template maybe tried , didn't work.... you're asking mixin template does:

import std.stdio;  struct st {     int t = 44; }  // needs declared mixin template mixin template inter(t) {     alias self = t;      void myfunc(ref self) {         writeln("inter: ", self.stringof, " : ", 11);     } }  // overload mixin template.... mixin template inter(t: st) {     alias self = t;      void myfunc(ref self self) {         writeln("inter 2 (st)! : ", self.stringof, " : ", self.t);     } }   mixin inter!st; // , mix in current scope  void main(string[] args){     st s;      s.myfunc(); // boom, works! }

you mix in main, ufcs won't work there because ufcs doesn't consider local symbols, wouldn't work if hand-wrote function either. looks @ module level.

so mixin keyword import functionality you're looking for.... unless misunderstood question.


Comments

Post a Comment

Popular posts from this blog

python - pip install -U PySide error -

-
does know how avoid following error when running pip install -u pyside per official website instructions here: https://pypi.python.org/pypi/pyside/#installing-pyside-on-a-mac-os-x-system note have done brew install qt successfully. you using pip version 7.0.3, version 7.1.2 available. should consider upgrading via 'pip install --upgrade pip' command. collecting pyside using cached pyside-1.2.4.tar.gz installing collected packages: pyside running setup.py install pyside complete output command /applications/anaconda/bin/python -c "import setuptools, tokenize;__file__='/private/var/folders/dy/ttgqhqqx3g9bsbsnqnxsk2z80000gq/t/pip-build-cpxemt/pyside/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /var/folders/dy/ttgqhqqx3g9bsbsnqnxsk2z80000gq/t/pip-0r7hri-record/install-record.txt --single-version-externally-managed --compile: ...
Read more

arrays - C++ error: a brace-enclosed initializer is not allowed here before ‘{’ token -

-
simple question: i'm trying initialize array within c++ class declaration: using namespace std; #include <string> class myclass{ public: string myarray[] = {"a","b","c"}; }; and i'm getting error: error: brace-enclosed initializer not allowed here before ‘{’ token no, without complied c++11 compiler, cannot initialize member array in declaration. have initialize array member in constructor. , don't use open array if know number of elements initialize array.
Read more

cytoscape.js - How to add nodes to Dagre layout with Cytoscape -

-
i trying add nodes dagre graph through cityscape.js. problem nodes not painted. code have: cy.add({ group: "nodes", data: { id:"n0",name:"n0",weight: 75 }, }); $.ajax(url).done(function(jsontree){ var newnodes=[]; for(var i=1;i<6;i++){ //var child = jsontree.result[i]; newnodes.push( { group: "nodes", data: { id: "n"+i, name:"n"+i}}, { group: "edges", data: { id: "e"+i, source: "n0", target: "n"+i } } ); } cy.add(newnodes); any ideas? have used loaded function reload graph not work. not know if have use specific function reload graph. thank in advance. you need add positions new nodes. cytoscape.js docs : it important note positions of newly added nodes must defined when calling cy.add(). nodes can not placed in graph without valid position — otherwise not displayed. yo...
Read more