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Append an object to a list in R in amortized constant time, O(1)?
... (2015-Feb-01): This post is coming up on its fifth birthday. Some kind readers keep repeating any shortcomings with it, so by all means also see some of the comments below. One suggestion for list types:
newlist <- list(oldlist, list(someobj))
In general, R types can make it hard to have one...
When should I use a composite index?
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Mark CanlasMark Canlas
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Entity Framework: One Database, Multiple DbContexts. Is this a bad idea? [closed]
...context in your application can do that. The trick for this is usually one additional context containing all your entities which is used only for database creation. Your real application contexts containing only subsets of your entities must have database initializer set to null.
There are other is...
Argparse: Required arguments listed under “optional arguments”?
... non-positional arguments, they will still be listed under the confusing header “optional arguments” even if they are required. The missing square brackets in the usage part however show that they are indeed required.
See also the documentation:
In general, the argparse module assumes that ...
How do I remove the passphrase for the SSH key without having to create a new key?
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Arsen Khachaturyan
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answered Sep 21 '08 at 22:42
Torsten MarekTorsten Marek
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How to open multiple pull requests on GitHub
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All commits since my last request and all new ones are automatically added to this request .
6 Answers
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Why does git-rebase give me merge conflicts when all I'm doing is squashing commits?
...merge, the conflicts will happen again. You'll have to resolve them again, add them to the index, then use git rebase --continue to move on. (Of course, you can resolve them again by checking out the version from the original merge commit.)
If you happen to have rerere enabled in your repo (rerere....
What's the difference between “declare class” and “interface” in TypeScript
...going to have to re-implement all the members yourself and won't be taking advantage of any code re-use from the would-be base class, and functions that check the prototype chain at runtime will reject your object as not actually being an instance of the base class.
To get really nerdy, if you hav...
Given an RGB value, how do I create a tint (or shade)?
...B value, like 168, 0, 255 , how do I create tints (make it lighter) and shades (make it darker) of the color?
3 Answers
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Why Doesn't C# Allow Static Methods to Implement an Interface?
...- if you find yourself in the position where your implementation could be made static, you may need to ask yourself if that method really belongs in the interface.
To implement your example, I would give Animal a const property, which would still allow it to be accessed from a static context, and r...