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Socket File “/var/pgsql_socket/.s.PGSQL.5432” Missing In Mountain Lion (OS m>X m> Server)
...just upgraded my MacMini Server from Lion Server to Mountain Lion using OS m>X m> Server. I am having the same problem with PostgreSQL that I did last year when I first installed Lion Server.
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Delete a single record from Entity Framework?
...t's not necessary to query the object first, you can attach it to the contem>x m>t by its id.
Like this:
var employer = new Employ { Id = 1 };
ctm>x m>.Employ.Attach(employer);
ctm>x m>.Employ.Remove(employer);
ctm>x m>.SaveChanges();
Alternatively, you can set the attached entry's state to deleted :
var employer =...
The object cannot be deleted because it was not found in the ObjectStateManager
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It means that entity is not attached (it was not loaded by the same contem>x m>t instance). Try this:
protected MyEntities sqlEntities;
public virtual void Delete(TEntity entity)
{
sqlEntities.Attach(entity);
sqlEntities.DeleteObject(entity);
sqlEntities.SaveChanges();
}
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Set the absolute position of a view
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You can use RelativeLayout. Let's say you wanted a 30m>x m>40 ImageView at position (50,60) inside your layout. Somewhere in your activity:
// Some em>x m>isting RelativeLayout from your layout m>x m>ml
RelativeLayout rl = (RelativeLayout) findViewById(R.id.my_relative_layout);
ImageView iv...
get list from pandas dataframe column
I have an em>x m>cel document which looks like this..
7 Answers
7
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How do I measure separate CPU core usage for a process?
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You can also press I to toggle Irim>x m> mode (as opposed to Solaris mode). When on, the percentage displayed in the process list is relative to a CPU thread. When off, the said percentage is displayed relatively to the CPU overall capacity (i.e. ALL threads - aka...
convert double to int
...maller than the range of double. A cast from double to int won't throw an em>x m>ception if the value is outside the range of int in an unchecked contem>x m>t, whereas a call to Convert.ToInt32(double) will. The result of the cast (in an unchecked contem>x m>t) is em>x m>plicitly undefined if the value is outside the r...
How to set default values in Rails?
...tiveRecord directly calling .allocate was about model objects loaded with em>x m>isting data from the database. (And it's a terrible idea for ActiveRecord to work that way, IMO. But that's beside the point.)
– SFEley
Mar 10 '11 at 7:55
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UIRefreshControl - beginRefreshing not working when UITableViewController is inside UINavigationCont
...ViewController (which is inside a UINavigationController) and it works as em>x m>pected (i.e. pull down fires the correct event). However, if I programmatically invoke the beginRefreshing instance method on the refresh control like:
...
How to map and remove nil values in Ruby
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Ruby 2.7+
There is now!
Ruby 2.7 is introducing filter_map for this em>x m>act purpose. It's idiomatic and performant, and I'd em>x m>pect it to become the norm very soon.
For em>x m>ample:
numbers = [1, 2, 5, 8, 10, 13]
enum.filter_map { |i| i * 2 if i.even? }
# => [4, 16, 20]
In your case, as the bl...