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I need to pop up and trash away a “middle” commit in my master branch. How can I do it?
... the history is not rewritten, you maintain a clear record of the mistake, and other repos will accept the push.
Here's a good way to erase: git rebase -i <commit>^
That takes you to the commit just before the one you want to remove. The interactive editor will show you a list of all the comm...
What exactly does the Access-Control-Allow-Credentials header do?
I'm trying to understand how to use CORS and am confused about what the Access-Control-Allow-Credentials header does.
1 A...
Get TransactionScope to work with async / await
... MSDN, it enables transaction flow across thread continuations.
My understanding is that it is meant to allow you to write code like this:
// transaction scope
using (var scope = new TransactionScope(... ,
TransactionScopeAsyncFlowOption.Enabled))
{
// connection
using (var connection = new ...
Await on a completed task same as task.Result?
I'm currently reading " Concurrency in C# Cookbook " by Stephen Cleary, and I noticed the following technique:
2 Answers
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git rebase fatal: Needed a single revision
I have a branch of a public repository and I am trying to update my branch with the current commits from the original repository:
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How to prove that a problem is NP complete?
...least one vertex in the cover set?) is in NP:
our input X is some graph G and some number k (this is from the problem definition)
Take our information C to be "any possible subset of vertices in graph G of size k"
Then we can write an algorithm V that, given G, k and C, will return whether that s...
Why not abstract fields?
...Child constructor would be trying to use a non-existent noargs constructor and that is a compilation error (not a warning).
– Stephen C
Feb 6 '10 at 0:15
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SQL set values of one column equal to values of another column in the same table
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UPDATE YourTable
SET ColumnB=ColumnA
WHERE
ColumnB IS NULL
AND ColumnA IS NOT NULL
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Does a UNIQUE constraint automatically create an INDEX on the field(s)?
...managed to get that explain result, I've just copied your table definition and the same explain shows UNIQ_EMAIL_USER as possible key, can you please recheck it?
– piotrm
Mar 19 '12 at 3:01
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What is Python buffer type for?
...buffer in this case is a sub-string, starting at position 6 with length 5, and it doesn't take extra storage space - it references a slice of the string.
This isn't very useful for short strings like this, but it can be necessary when using large amounts of data. This example uses a mutable bytearr...