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How to implement a queue using two stacks?
...he bottle and hold it upside down so that all the values should reverse in order ?
Yes we can do that, but that's a bottle. To do the same process, we need to have a second stack that which is going to store the first stack elements in reverse order. Let's put our populated stack to the left and ...
What is Normalisation (or Normalization)?
...omalies, meaning that you have to decompose and scan individual values in order to find what you are looking for. For example, if one of the values is the string "Ford, Cadillac" as given by an earlier response, and you are looking for all the ocurrences of "Ford", you are going to have to break...
How to change the name of a Django app?
...y -- no problems with the existing historical migrations. Do the steps in order, and propagate the changes everywhere before moving to the following step.
– user85461
Sep 30 '19 at 18:11
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Which data type for latitude and longitude?
...ongitude and latitude, same as in GPS. More about it: http://epsg.io/4326
Order is Longitude, Latitude - so if you plot it as the map, it is (x, y).
To find closest point you need first to create spatial index:
create index on your_table using gist (geog);
and then request, say, 5 closest to a ...
How to add multiple font files for the same font?
...
The order is important, the bold/italic style must come last.
– The Who
Jun 11 '10 at 12:40
8
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Java 7 language features with Android
... @Amit because he's come to realize Android is different from Java and in order to work with Android he has to use the tools that is offered.
– Warpzit
Oct 30 '12 at 9:01
2
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How do you effectively model inheritance in a database?
...iminator value), whereas target per entity you need to do complex joins in order to detect what type something is as well as retreiuve all its data..
Edit: The images I show here are screen shots of a project I am working on. The Asset image is not complete, hence the emptyness of it, but it was ma...
Rails: confused about syntax for passing locals to partials
...tly pass values the same way all the time, and you won't have problems. In order to learn about this, I went directly to the code itself (actionpack/lib/base.rb, render() method in Rails 2; Rails 3 is different). It's a good exercise.
Furthermore, don't worry about "bothering" people on SO. That's ...
What are sessions? How do they work?
...
Because HTTP is stateless, in order to associate a request to any other request, you need a way to store user data between HTTP requests.
Cookies or URL parameters ( for ex. like http://example.com/myPage?asd=lol&boo=no ) are both suitable ways to ...
SQL Server: Query fast, but slow from procedure
...understanding, it's a great write up. e.g.
Slow way:
CREATE PROCEDURE GetOrderForCustomers(@CustID varchar(20))
AS
BEGIN
SELECT *
FROM orders
WHERE customerid = @CustID
END
Fast way:
CREATE PROCEDURE GetOrderForCustomersWithoutPS(@CustID varchar(20))
AS
BEGIN
DECLARE @LocCustID...