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Why does C++ not allow inherited friendship?

Why is friendship not at least optionally inheritable in C++? I understand transitivity and reflexivity being forbidden for obvious reasons (I say this only to head off simple FAQ quote answers), but the lack of something along the lines of virtual friend class Foo; puzzles me. Does anyone know ...
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How to change the default GCC compiler in Ubuntu?

...n ubuntu 11.04 which already has gcc/g++-4.4. So in my system both gcc-3.3 and 4.4 are available. I am able to call both compilers as I want. If I just call the command gcc then gcc-4.4 will get called. To call gcc-3.3, I have to use the command gcc-3.3 . ...
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AngularJS - difference between pristine/dirty and touched/untouched

AngularJS Developer Guide - Forms tell there are many styles and directives regarding forms and fields. For each one, a CSS class: ...
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Scrolling child div scrolls the window, how do I stop that?

... Many browser scroll wheels disappear and reappear based on the user moving the mouse now, so the above comment is problem no longer an issue. – Keith Holliday Oct 16 '15 at 3:42 ...
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Enabling WiFi on Android Emulator

How to enable WiFi on Android emulator? I have tried to find this but everyone is confusing WiFi with 3G. 6 Answers ...
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Acronyms in CamelCase [closed]

...se you have this acronym: Unesco = United Nations Educational, Scientific and Cultural Organization. 11 Answers ...
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Why is “Set as Startup” option stored in the suo file and not the sln file?

...ting should be stored in the solution file so it's shared across all users and part of source code control. Since we don't check in the suo file, each user has to set this separately which seems strange. ...
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Default visibility for C# classes and members (fields, methods, etc.)?

... All of the information you are looking for can be found here and here (thanks Reed Copsey): From the first link: Classes and structs that are declared directly within a namespace (in other words, that are not nested within other classes or structs) can be either public or internal...
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c# datatable to csv

...elds)); } File.WriteAllText("test.csv", sb.ToString()); .net >= 4.0 And as Tim pointed out, if you are on .net>=4, you can make it even shorter: StringBuilder sb = new StringBuilder(); IEnumerable<string> columnNames = dt.Columns.Cast<DataColumn>(). ...
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How to make rounded percentages add up to 100%

... There is aproblem with this function when the last element is 0 and previous ones add to 100. E.g. [52.6813880126183, 5.941114616193481, 24.55310199789695, 8.780231335436383, 8.04416403785489, 0]. The last one logically returns -1. I thought of the following solution really quickly but th...