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Why are C# 4 optional parameters defined on interface not enforced on implementing class?
...ks for the great question!
Suppose you have an interface as you describe, and a hundred classes that implement it. Then you decide to make one of the parameters of one of the interface's methods optional. Are you suggesting that the right thing to do is for the compiler to force the developer to fi...
jQuery: Difference between position() and offset()
What is the difference between position() and offset() ? I tried to do the following in a click event:
3 Answers
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How can a string be initialized using “ ”?
...Primitives are stored in the call stack, which require less storage spaces and are cheaper to manipulate. On the other hand, objects are stored in the program heap, which require complex memory management and more storage spaces.
For performance reason, Java's String is designed to be in betwee...
How to compare two revisions in Bitbucket?
My team is using Bitbucket for our git repository and we've recently starting using the pull request functionality for code reviews. It works fine on the first review, but if it goes through multiple iterations (that is, changes are made and pull request updated), I would like to see a link with ju...
Drag and drop files into WPF
...ing you have one file that you care about, pass it off to whatever
// handling code you have defined.
HandleFileOpen(files[0]);
}
}
Also, don't forget to actually hook up the event in XAML, as well as setting the AllowDrop attribute.
<StackPanel Name="ImagePanel" Drop="ImagePanel_Dro...
What is Pseudo TTY-Allocation? (SSH and Github)
...ention of giving you an interactive secure shell, where you could type command.
GitHub only wants to reply to your ssh request, in order to ascertain that the ssh command does work (you have the right public/private keys, and the public one has been registered to your GitHub account)
PuTTy would...
LIMIT 10..20 in SQL Server
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The LIMIT clause is not part of standard SQL. It's supported as a vendor extension to SQL by MySQL, PostgreSQL, and SQLite.
Other brands of database may have similar features (e.g. TOP in Microsoft SQL Server), but these don't always work identically.
It...
Scala Programming for Android
I have followed the tutorial at Scala and Android with Scala 2.7.3 final. The resulting Android App works but even the most basic application takes several minutes (!) to compile and needs 900 kb compressed, which is a show stopper for mobile applications. Additionally, the IDE runs out of mem...
docker mounting volumes on host
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The VOLUME command will mount a directory inside your container and store any files created or edited inside that directory on your hosts disk outside the container file structure, bypassing the union file system.
The idea is that your vol...
How can I limit possible inputs in a HTML5 “number” element?
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And you can add a max attribute that will specify the highest possible number that you may insert
<input type="number" max="999" />
if you add both a max and a min value you can specify the range of allowed values:
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