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Should the hash code of null always be zero, in .NET
...n.Spring;
Season? vnull = null;
if(vnull == v) // never TRUE
EDIT
From MSDN
If two objects compare as equal, the GetHashCode method for each object must return the same value. However, if two objects do not compare as equal, the GetHashCode methods for the two object do not have to return ...
vs in Generics
...sn't covariant, even though logically it should work, since string derives from object. Before variance in generic interfaces was added to C# and VB.NET (in .NET 4 with VS 2010), this was a compile time error.
After .NET 4, IEnumerable<T> was marked covariant, and became IEnumerable<out T...
Prevent redirection of Xmlhttprequest
Is it possible to prevent the browser from following redirects when sending XMLHttpRequest-s (i.e. to get the redirect status code back and handle it myself)?
...
Having links relative to root?
... to Fruits List</a>
Edited in response to question, in comments, from OP:
So doing / will make it relative to www.example.com, is there a way to specify what the root is, e.g what if i want the root to be www.example.com/fruits in www.example.com/fruits/apples/apple.html?
Yes, prefac...
How can I switch my git repository to a particular commit
...r part of it)
git checkout -b new_branch 6e559cb
or to go back 4 commits from HEAD
git checkout -b new_branch HEAD~4
Once your new branch is created (locally), you might want to replicate this change on a remote of the same name: How can I push my changes to a remote branch
For discarding t...
Entity Framework - Start Over - Undo/Rollback All Migrations
...If you want to run enable-migrations again and you are developing database from scratch you just need to follow the last sentence: delete database and all migration related code. If you started using migrations with existing database you first have to revert all migrations by using the second or thi...
How do I declare an array of weak references in Swift?
...
How do you remove the wrapper objects from the array when their value is deallocated?
– Sulthan
Jun 9 '14 at 20:09
9
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Intellij IDEA crashed, and now throws an error
...
from the OS explorer, where the project files are located
– Hossein
Feb 7 '15 at 8:21
add a comment
...
In git, what is the difference between merge --squash and rebase?
...is is useful if you want to throw away the source branch completely, going from (schema taken from SO question):
git checkout stable
X stable
/
a---b---c---d---e---f---g tmp
to:
git merge --squash tmp
git commit -m "squash tmp"
X----------...
Vim - how to run a command immediately when starting vim?
... *SHELL* *COMSPEC* *TERM*
2. Process the arguments
3. Execute Ex commands, from environment variables and/or files *vimrc* *exrc*
4. Load the plugin scripts. *load-plugins*
5. Set 'shellpipe' and 'shellredir'
6. Set 'updatecount' to zero, if "-n" command argument used...