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Why can tuples contain mutable items?
...ike this. Python would have to use lists, which would probably slow things down, and would certainly be less memory efficient.
So you see, in order to fulfill their purpose, tuples must be immutable, but also must be able to contain mutable objects. If the designers of Python wanted to create an ...
Why would you ever implement finalize()?
...nection wasn't closed properly. It turned out to be a great help to track down the non-closed connections.
– brainimus
May 29 '10 at 21:38
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Is null an Object?
... literal that can be of any
reference type.
I think this can be boiled down to "null is special".
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offsetting an html anchor to adjust for fixed header [duplicate]
... there is still jankiness with the indicator in the nav. so if you scroll down the page, the active nav item doesn't switch until you scroll past the anchor target.
– Randy L
Feb 13 '13 at 18:04
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EF Code First foreign key without navigation property
...oreChanges SomeNewSchemaName. The migration will only contain empty Up and Down methods in this case.
Then you can modify the Up method by adding the follwing to it:
public override void Up()
{
// other stuff...
AddForeignKey("ChildTableName", "ParentId", "ParentTableName", "Id",
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How many database indexes is too many?
... bitmap AND operations (basically an efficient bitmap and operation), then down the execution plan you'll see bitmap conversion to rowids. It's really fast.
– Tagar
May 11 '16 at 22:31
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How to enable local network users to access my WAMP sites?
...might be the white windows icon or the circle or Bill Gates jumping up and down. Whatever it is - click on it.
Once you have done the above - restart all services and everything should come up just fine.
Finally - why? Why do you have to change the Listen command? It has to do with localhost. ...
How to delete an app from iTunesConnect / App Store Connect
...r right-hand corner,
click the arrow next to All Statuses. From the drop-down menu, choose
Removed Apps. Choose the app you want to restore. Scroll to the
Additional Information section, then click Restore App.
You can show the removed app by clicking on all Statuses on the top right of the ...
What is this weird colon-member (“ : ”) syntax in the constructor?
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this should have been the answer. thank god i scrolled down else i would have missed it.
– Coffee_lover
Aug 13 '15 at 11:41
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Simple explanation of MapReduce?
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Going all the way down to the basics for Map and Reduce.
Map is a function which "transforms" items in some kind of list to another kind of item and put them back in the same kind of list.
suppose I have a list of numbers: [1,2,3] and I wa...