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What is a plain English explanation of “Big O” notation?
... on comparison operations (comparing two nodes to determine their relative ordering). This assumes that comparison is expensive. But what if the comparison is cheap but swapping is expensive? It changes the comparison; and
complexity: if it takes me one second to sort 10,000 elements, how long wi...
Using sections in Editor/Display templates
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As a dictionary is un-ordered how would I do first in first out? The order it outputs is random (presumably because of the Guid)..
– eth0
Mar 25 '11 at 15:56
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Nullable Foreign Key bad practice?
Let's say you have a table Orders with a foreign key to a Customer Id. Now, suppose you want to add an Order without a Customer Id, (whether that should be possible is another question) you would have to make the foreign key NULL... Is that bad practice or would you rather work with a link table bet...
How to create the perfect OOP application [closed]
...ll comes together to print this receipt:
------------------ THIS IS YOUR ORDER ------------------
(001) Domain Driven Design ----- $69.99
(001) Growing Object Oriented Software ----- $49.99
(001) House M.D. Season 1 ----- $29.99
(001) House M...
In Functional Programming, what is a functor?
...ule that provides:
The type of key to be used in the binary tree
A total-ordering function on keys
Once you've done this, you can use the same balanced binary tree implementation forever. (The type of value stored in the tree is usually left polymorphic—the tree doesn't need to look at values...
How do I do top 1 in Oracle?
...fname from MyTbl where rownum = 1
You can also use analytic functions to order and take the top x:
select max(fname) over (rank() order by some_factor) from MyTbl
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How does PHP 'foreach' actually work?
...plicated. First of all, it should be noted that in PHP "arrays" are really ordered dictionaries and they will be traversed according to this order (which matches the insertion order as long as you didn't use something like sort). This is opposed to iterating by the natural order of the keys (how lis...
Using parameters in batch files at Windows command line
...process parameters without requiring that they are presented in a specific order. For example, a script may recognize the flags -a and -b in any order. A good way to parse the command line in such cases is
:parse
IF "%~1"=="" GOTO endparse
IF "%~1"=="-a" REM do something
IF "%~1"=="-b" REM do somet...
What is LINQ and what does it do? [closed]
...or collection and iterator manipulation that makes extensive use of higher-order functions as arguments (System.Linq)
a library for passing and manipulation of simple functions as abstract syntax trees (System.Linq.Expressions)
a syntax extension to various languages to provide a more SQL-like synta...
Setting up FTP on Amazon Cloud Server [closed]
...cess." vsftpd will allow FTP access to any user not on this list.
So, in order to create a new FTP account, you may need to create a new user on your server. (Or, if you already have a user account that's not listed in /etc/vsftpd/user_list, you can skip to the next step.)
Creating a new user on...