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Why does C++ require a user-provided default constructor to default-construct a const object?
...'t defined user-defined constructor. Compile it. It will compile:
http://www.ideone.com/h7TsA
And comment the virtual function, then it gives error, as expected:
http://www.ideone.com/SWk7B
Well, I think, you misunderstood the passage. It first says this (§8.5/9):
If no initializer is...
How to specify maven's distributionManagement organisation wide?
...t;
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>your.company&...
Difference between Observer, Pub/Sub, and Data Binding
...atterns: Designing, Building, and Deploying Messaging Solutions" -
http://www.addison-wesley.de/9780321200686.html
This book contains a lot of ideas about how to send messages between processes or classes that can be used even in intra-process communication tasks (it helped me to program in a more...
How to add a custom Ribbon tab using VBA?
.....)
By the way the page that explains it on Ron's site is now at
http://www.rondebruin.nl/win/s2/win002.htm
And here is his example on how you enable /disable buttons on the Ribbon
http://www.rondebruin.nl/win/s2/win013.htm
For other xml examples of ribbons please also see
http://msdn.microsoft...
Difference between Pragma and Cache-Control headers?
...a requests and the server receiving a request from the client. The http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.32 defines the scenario as follows:
HTTP/1.1 caches SHOULD treat "Pragma: no-cache" as if the client had
sent "Cache-Control: no-cache". No new Pragma directives wil...
Do you have to put Task.Run in a method to make it async?
... var client = new HttpClient();
var html = await client.GetAsync("http://www.example.com/");
return html.Length;
}
So, the basic pattern of things is to have async code depend on "awaitables" in its await expressions. These "awaitables" can be other async methods or just regular methods return...
What is the recommended approach towards multi-tenant databases in MongoDB?
...ere are no performance tradeoffs
using lots of collections. See
http://www.mongodb.org/display/DOCS/Using+a+Large+Number+of+Collections
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fol...
Looking for a clear definition of what a “tokenizer”, “parser” and...
...he only book I could get my hands on (it being 1991, before Amazon and the WWW). I had that and a collection of text files produced by Jack W. Crenshaw called "LET'S BUILD A COMPILER" (thanks Jack!). This is still the book to get for a more complete understanding of the principles, but most programm...
How to solve error “Missing `secret_key_base` for 'production' environment” (Rails 4.1)
...ng Demi Magus's excellent instructions, I did something like this: cd /var/www/rails; rvm use ext-rbx-2.5.2@rails; SKB_FILE=/var/www/.secret_key_base; echo "export SECRET_KEY_BASE=$(RAILS_ENV=production rake secret)" > $SKB_FILE; . $SKB_FILE; echo ". $SKB_FILE" | tee -a ~/.bashrc ~/.bash_profile;...
What is the difference between inversedBy and mappedBy?
...ion is the entity with the table containing the foreign key.
See https://www.doctrine-project.org/projects/doctrine-orm/en/latest/reference/unitofwork-associations.html
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