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What's is the difference between include and extend in use case diagram?
What is the difference between include and extend in a use case diagram ?
19 Answers
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How to select rows with no matching entry in another table?
I'm doing some maintenance work on a database application and I've discovered that, joy of joys, even though values from one table are being used in the style of foreign keys, there's no foreign key constraints on the tables.
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What is this weird colon-member (“ : ”) syntax in the constructor?
Recently I've seen an example like the following:
12 Answers
12
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Skip first entry in for loop in python?
In python, How do I do something like:
13 Answers
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Entity Framework: One Database, Multiple DbContexts. Is this a bad idea? [closed]
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You can have multiple contexts for single database. It can be useful for example if your database contains multiple database schemas and you want to handle each of them as separate self contained area.
The problem is when you want to use code first to create ...
Reverse Range in Swift
Is there a way to work with reverse ranges in Swift?
7 Answers
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How to lose margin/padding in UITextView?
I have a UITextView in my iOS Application, which displays a large amount of text.
22 Answers
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Namespace + functions versus static methods on a class
Let's say I have, or am going to write, a set of related functions. Let's say they're math-related. Organizationally, should I:
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How to think in data stores instead of databases?
As an example, Google App Engine uses Google Datastore, not a standard database, to store data. Does anybody have any tips for using Google Datastore instead of databases? It seems I've trained my mind to think 100% in object relationships that map directly to table structures, and now it's hard t...
Best practices: throwing exceptions from properties
When is it appropriate to throw an exception from within a property getter or setter? When is it not appropriate? Why? Links to external documents on the subject would be helpful... Google turned up surprisingly little.
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