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Surrogate vs. natural/business keys [closed]
...of a surrogate key) and also the child key. So imagine the following where starting from TABLEA the relationship is 1-0..*: TABLEA PK: ID_A TABLEB PK: ID_A ID_B TABLEC PK: ID_A ID_B ID_C TABLED PK: ID_A ID_B ID_C ID_D. See the problem? The parent key is propagated in the children tables. What would...
Combining two expressions (Expression)
... expr1.Body,
Expression.Invoke(expr2, param)), param);
}
Starting from .NET 4.0, there is the ExpressionVisitor class which allows you to build expressions that are EF safe.
public static Expression<Func<T, bool>> AndAlso<T>(
this Expression<Func&l...
How to prevent robots from automatically filling up a form?
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I like this! Until the bot starts trying different combinations of blank and filled-in fields... best way to test is implement this and scan with one of these: sectoolmarket.com/…
– nmit026
Ask for User Permission to Receive UILocalNotifications in iOS 8
...working fine with simulator with iOS8. I wanted my app's deployment target starting from iOS7. So, when I run this code on an iOS7 device, I get this error: dyld: Symbol not found: _OBJC_CLASS_$_UIUserNotificationSettings. Is there any other way in Swift to ask user for permissions in order to work ...
xcodebuild says does not contain scheme
... may be looking for configuration data; a great indicator of where it will start looking is based on the use of '-workspace' or '-project' arguments.
The 'Shared' box is already checked...now what?
I encountered this same issue on my own Bamboo instance; it turned out that the scheme that was com...
Bring element to front using CSS
...rs. A z-index placed on a container farther up in the hierarchy basically starts a new "layer"
Incep[inception]tion
Here's a fiddle to play around:
https://jsfiddle.net/orkLx6o8/
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Placement of the ng-app directive (html vs body)
...that area. That is, you can still use the jquery in the angular areas, but start with the angular code - not easy when the page already exists! In other words, it's not the jquery calls that have to go, as much as the stuff between the <script> tags has to move into angular constructs - contro...
Is there any significant difference between using if/else and switch-case in C#?
...sort
Inventing the switch statement (which Tony called the case statement)
Starting and ending his career in industry
I can't imagine living without switch.
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How to make jQuery to not round value returned by .width()?
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Ross Allen's answer is a good starting point but using getBoundingClientRect().width will also include the padding and the border width which ain't the case the the jquery's width function:
The returned TextRectangle object includes the padding, scrol...
DBMS_OUTPUT.PUT_LINE not printing
... query plan and execution statistics rather than the query results. We're starting to get rather far from your original question, however.
– Justin Cave
May 3 '12 at 16:35
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