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When should you use 'friend' in C++?
...te, the C++ FAQ mentions that friend enhances encapsulation. friend grants selective access to members, just like protected does. Any fine-grained control is better than granting public access. Other languages define selective access mechanisms too, consider C#'s internal. Most negative criticism ar...
How to get the part of a file after the first line that matches a regular expression?
...it, -e indicated a script to sed, /TERMINATE/,$ is an address (line) range selection meaning the first line matching the TERMINATE regular expression (like grep) to the end of the file ($), and p is the print command which prints the current line.
This will print from the line that follows the line...
What effect(s) can the virtual keyword have in Entity Framework 4.1 POCO Code First?
... you don't want to fetch that column, never fetch the whole record - just .Select(a=>new { fields you want }).
– Scott Stafford
Jun 14 '13 at 13:19
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How does this giant regex work?
...e nicely done. Basically, it lists all the files in the current directory, and it lets you change directories.
4 Answers
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Understanding garbage collection in .NET
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You are being tripped up here and drawing very wrong conclusions because you are using a debugger. You'll need to run your code the way it runs on your user's machine. Switch to the Release build first with Build + Configuration manager, change the "Act...
How to define a custom ORDER BY order in mySQL
...in the order you specify.
The second will involve a case somewhere, i.e.
SELECT * FROM table
ORDER BY CASE Language
WHEN 'ENU' THEN 3
WHEN 'JPN' THEN 2
WHEN 'DAN' THEN 1
ELSE 0
END DESC, ID ASC
Performance-wise the ENUM method will return faster results, but be more hassle if you...
How do I specify a pointer to an overloaded function?
...putIterator, InputIterator, UnaryFunction );
Template deduction needs to select a type for UnaryFunction at the point of the call. But f doesn't have a specific type - it's an overloaded function, there are many fs each with different types. There is no current way for for_each to aid the template...
How to flatten tree via LINQ?
...IEnumerable<MyNode> Flatten(IEnumerable<MyNode> e) =>
e.SelectMany(c => Flatten(c.Elements)).Concat(new[] { e });
You can then filter by group using Where(...).
To earn some "points for style", convert Flatten to an extension function in a static class.
public static IEnume...
How can I save application settings in a Windows Forms application?
...gs. Right click on the project in Solution Explorer and choose Properties. Select the Settings tab and click on the hyperlink if settings doesn't exist.
Use the Settings tab to create application settings. Visual Studio creates the files Settings.settings and Settings.Designer.settings that contain...
“User interaction is not allowed” trying to sign an OSX app using codesign
...ish agrawal!
Login your build user via the GUI and open Keychain Access. Select your signing private key, right-click, choose Get Info, change to the Access Control tab and select the "Allow all applications to access this item".
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