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How can I expose more than 1 port with Docker?
So I have 3 ports that should be exposed to the machine's interface. Is it possible to do this with a Docker container?
4 A...
The object cannot be deleted because it was not found in the ObjectStateManager
... not attached (it was not loaded by the same context instance). Try this:
protected MyEntities sqlEntities;
public virtual void Delete(TEntity entity)
{
sqlEntities.Attach(entity);
sqlEntities.DeleteObject(entity);
sqlEntities.SaveChanges();
}
...
Linux: copy and create destination dir if it does not exist
I want a command (or probably an option to cp) that creates the destination directory if it does not exist.
21 Answers
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Recursion in Angular directives
There are a couple of popular recursive angular directive Q&A's out there, which all come down to one of the following solutions:
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How do I pass a unique_ptr argument to a constructor or a function?
...o move semantics in C++11 and I don't know very well how to handle unique_ptr parameters in constructors or functions. Consider this class referencing itself:
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How come an array's address is equal to its value in C?
In the following bit of code, pointer values and pointer addresses differ as expected.
6 Answers
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C# List of objects, how do I get the sum of a property
I have a list of objects. One property of the individual object entry is amount. How do I get the sum of amount?
4 Answers
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How can we make xkcd style graphs?
Apparently, folk have figured out how to make xkcd style graphs in Mathematica and in LaTeX . Can we do it in R? Ggplot2-ers? A geom_xkcd and/or theme_xkcd?
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How to flatten nested objects with linq expression
...
myBooks.SelectMany(b => b.Chapters
.SelectMany(c => c.Pages
.Select(p => b.Name + ", " + c.Name + ", " + p.Name)));
share
|
improve t...
Query to list number of records in each table in a database
...
If you're using SQL Server 2005 and up, you can also use this:
SELECT
t.NAME AS TableName,
i.name as indexName,
p.[Rows],
sum(a.total_pages) as TotalPages,
sum(a.used_pages) as UsedPages,
sum(a.data_pages) as DataPages,
(sum(a.tot...