{"id":4810,"date":"2014-03-30T15:33:32","date_gmt":"2014-03-30T15:33:32","guid":{"rendered":"https:\/\/unknownerror.org\/index.php\/2014\/03\/30\/problem-about-base-collection-of-common-programming-errors\/"},"modified":"2014-03-30T15:33:32","modified_gmt":"2014-03-30T15:33:32","slug":"problem-about-base-collection-of-common-programming-errors","status":"publish","type":"post","link":"https:\/\/unknownerror.org\/index.php\/2014\/03\/30\/problem-about-base-collection-of-common-programming-errors\/","title":{"rendered":"problem about base-Collection of common programming errors"},"content":{"rendered":"<ul>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/df6cf33b05610b10c0d63b9e3c3654d4?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nWim Coenen<br \/>\nc# variables base derived<br \/>\nclass Program {static void Main(string[] args){baseClass obj = new baseClass();obj.intF = 5;obj.intS = 4;child obj1 = new child();Console.WriteLine(Convert.ToString(obj.addNo()));Console.WriteLine(Convert.ToString(obj1.add()));Console.ReadLine();} } public class baseClass {public int intF = 0, intS = 0;public int addNo(){int intReturn = 0;intReturn = intF + intS;return intReturn;} } class child : baseClass {public int add(){int intReturn = 0;intReturn = base.intF * base.intS;return intReturn;} }<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/bf038c69f2219bf87bd92dd568582d77?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nGenTiradentes<br \/>\nc++ base<br \/>\nRight now I&#8217;m working on a project which requires an integer to be converted to a base 62 string many times a second. The faster this conversion is completed, the better.The problem is that I&#8217;m having a hard time getting my own base conversion methods to be fast and reliable. If I use strings, it&#8217;s generally reliable and works well, but it&#8217;s slow. If I use char arrays, it&#8217;s generally much faster, but it&#8217;s also very messy, and unreliable. (It produces heap corruption, comparison of strings that s<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/i.stack.imgur.com\/rYg1g.jpg?s=32&amp;g=1\" \/><br \/>\nSriram Sakthivel<br \/>\nc# constructor base<br \/>\nLet&#8217;s assume we have following classes:class BaseClass {public BaseClass(){\/\/sth to doHERE I WOULD LIKE TO KNOW WHICH CHILD CLASS INVOKES BASE CONSTRUCTOR} }class ChildClass : BaseClass {public ChildClass() : base() {} }As described above, I would like to find out in the runtime which child class invoked base class constructor?<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/f8389b9bd1ea8cb9e9fb54a4052b2ddd?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nuser1395887<br \/>\nc++ polymorphism base runtime.exec derived<br \/>\nI am stuck with a problem of runtime pointer assigning in C++. I have a base class with 2 members thread and threads.class base {struct base_struct {int a;};base_struct thread;std::vector&lt;base_struct&gt; threads;void fn () {}};derived1 is derived from base and has the same two members (thread and threads) but of different type.class derived1 : public base {struct derived_struct11 : public base_struct {int b;};derived_struct11 thread;std::vector&lt;derived_struct11&gt; threads;void fn () {prin<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/ee16625e6ca3ce5809ecb4d38e4c7722?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nMarlon<br \/>\nc# base<br \/>\nnamespace contest {class Program{static void Main(string[] args){B b = new B();}}class A {public A() {k();}private void k() {Console.WriteLine(base.GetType().Name);} }class B : A {} }Can someone tell me why it outputs &#8220;B&#8221; instead of &#8220;Object&#8221;, doesn&#8217;t base.GetType() get A&#8217;s parent object therefore the root Object?Thanks a lot<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/1d573a16aa3978f28f9554db44be4b56?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nDan Selig<br \/>\nxcode internationalization nib base<br \/>\nI have a project that I created in xcode 4.5 with a target ios of 5.0 and I used Base Internationalization. Base Internationalization moves the nib files to Base.lproj.The project runs on my iPhone 4 running ios 6 and on my iPad 3 running ios 6. But this error shows when I try to run it on my iPad 1 running ios 5.1.1. In the Build Phase section of the target, the nib files are shown in red.When I try to add the nib files to the Build Phases bundle resources, they add but they are still red (n<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/957956ce51706d03f19a4dc85a767bb1?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nchoroba<br \/>\nperl oop inheritance import base<br \/>\nI have a base class, named Foo::Base, I need to inherit its methods, like &#8216;new&#8217; and to import some subroutines names in a scope:package Foo::Base;sub new { &#8230; }sub import {no strict &#8216;refs&#8217;;my $caller = caller;*{&#8220;${caller}::my_sub&#8221;} = sub { 1 }; }1;So, I need to use this base class in my second class, Foo::Child:use base &#8216;Foo::Base&#8217;;&#8230; and it works for inheritance, but it doesn&#8217;t import &#8216;my_sub&#8217; in a scope. I can add stringuse Foo::Base;for it and it helps, but I don&#8217;t want to write something l<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/7455fbe2cde016f6cd36b4352be52eaf?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nKent Fredric<br \/>\nc++ class declaration base forward<br \/>\nI&#8217;m trying to create proper header files that don&#8217;t include much other files. (To keep them clean, to speed up compiling time, &#8230;)I encountered two problems while doing this:1 &#8211; Forward declaratoin on base classes doesn&#8217;t work.class B;class A : public B {\/\/ &#8230; }2 &#8211; Forward declaration on STD classes doesn&#8217;t work.namespace std {class string; }class A {string aStringToTest; }How do I solve these problems?<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/ffa82a34ba8350cf2ce8d66f5b121cf4?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nuser1757550<br \/>\nclass base derived<br \/>\nI have a vague idea of why this isn&#8217;t allowed, but I&#8217;m looking for something more concrete. I&#8217;m assuming it has something to do with the fact that all of the methods in a base class might not necessarily be virtual.Can anyone help me out?<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/i.stack.imgur.com\/bUCLw.jpg?s=32&amp;g=1\" \/><br \/>\nrzr<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/133978b437b712189938510d2072a137?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nChris<br \/>\nc++ class undefined base<br \/>\nMy code below generates the error &#8216;WorldObject&#8217;: [Base class undefined (translated from german)]Why is this? Here is the code which produces this error:ProjectilObject.h:#pragma once#ifndef _PROJECTILOBJECT_H_ #define _PROJECTILOBJECT_H_#include &#8220;GameObjects.h&#8221; class WorldObject; class ProjectilObject: public WorldObject { public:ProjectilObject(IGameObject* parent,int projectiltype);void deleteyourself(); protected: virtual void VProcEvent( long hashvalue, std::stringstream &amp;stream);virt<\/li>\n<\/ul>\n<p>Web site is in building<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Wim Coenen c# variables base derived class Program {static void Main(string[] args){baseClass obj = new baseClass();obj.intF = 5;obj.intS = 4;child obj1 = new child();Console.WriteLine(Convert.ToString(obj.addNo()));Console.WriteLine(Convert.ToString(obj1.add()));Console.ReadLine();} } public class baseClass {public int intF = 0, intS = 0;public int addNo(){int intReturn = 0;intReturn = intF + intS;return intReturn;} } class child : baseClass {public int add(){int intReturn [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-4810","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/4810","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/comments?post=4810"}],"version-history":[{"count":0,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/4810\/revisions"}],"wp:attachment":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/media?parent=4810"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/categories?post=4810"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/tags?post=4810"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}