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What is the difference between declarative and procedural programming paradigms?
... MXML (part of the Flex framework) is declarative: You tell it what order you want your objects/containers to be displayed, and it handles the layout depending on whether you've told it to lay itself out horizontally or vertically. ActionScript 3 is procedural with support for OOP paradigms.
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Difference between app.all('*') and app.use('/')
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In most cases they would work equivalently. The biggest difference is the order in which middleware would be applied:
app.all() attaches to the application's router, so it's used whenever the app.router middleware is reached (which handles all the method routes... GET, POST, etc).
NOTICE: ap...
Algorithms based on number base systems? [closed]
...tly came across a cool algorithm for generating subsets in lexicographical order based on the binary representations of the numbers between 0 and 2n - 1. It uses the numbers' bits both to determine what elements should be chosen for the set and to locally reorder the generated sets to get them into...
What is the “reactor” in Maven?
...uild them simultaneously and:
The reactor determines the correct build order from the dependencies stated by each project in their respective project descriptors, and will then execute a stated set of goals. It can be used for both building projects and other goals, such as site generation.
A...
What's the difference between Require.js and simply creating a element in the DOM? [closed]
... want, and don't have to worry about keeping track of dependencies or load order.
RequireJS makes it possible to write an entire, modular app without touching window object.
Taken from rmurphey's comments here in this Gist.
Layers of abstraction can be a nightmare to learn and adjust to, but wh...
When is JavaScript synchronous?
...ous means one at a time i.e. one line of code is being executed at time in order the code appears. So in JavaScript one thing is happening at a time.
Execution Context
The JavaScript engine interacts with other engines in the browser.
In the JavaScript execution stack there is global context at th...
Removing duplicate rows from table in Oracle
...gentid, class , status, terminationdate
order by rowid) rn
from t)
where rn <> 1);
(fixed the missing parenthesis)
share
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Non-Relational Database Design [closed]
...nges on designing the views.
The alternate designs I have found that work orders of magnitude better with CouchDB than any SQL database are at the system level rather than the storage level. If you have some data and want to serve them to a web page, the complexity of the total system is reduced by...
How do I create a variable number of variables?
...az'
...
a list may be more appropriate than a dict. A list represents an ordered sequence of objects, with integer indices:
lst = ['foo', 'bar', 'baz']
print(lst[1]) # prints bar, because indices start at 0
lst.append('potatoes') # lst is now ['foo', 'bar', 'baz', 'potatoes']
For ord...
How can I list (ls) the 5 last modified files in a directory?
...n of commands to use depends in which direction you want your output to be ordered.
For the newest 5 files ordered from newest to oldest, use head to take the first 5 lines of output:
ls -t | head -n 5
For the newest 5 files ordered from oldest to newest, use the -r switch to reverse ls's sort o...