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Difference between Observer, Pub/Sub, and Data Binding
...the functions stored in that array.
If we want to group observers handlers based on different events. We just need to modify that observersList to an Object like
var events = {
"event1": [handler1, handler2],
"event2": [handler3]
}
see this pubsub example for details.
and people call this v...
Using build types in Gradle to run same app that uses ContentProvider on one device
...uthority renaming
I guess all of you have heard of the new Android Gradle-based build system. Let's be honest, this new build system is a huge step forward compared to the previous one. It is not final yet (as of this writing, the latest version is 0.4.2) but you can already use it safely in most o...
Can you create nested WITH clauses for Common Table Expressions?
...s a recursive query:
WITH y
AS
(
SELECT x, y, z
FROM MyTable
WHERE [base_condition]
UNION ALL
SELECT x, y, z
FROM MyTable M
INNER JOIN y ON M.[some_other_condition] = y.[some_other_condition]
)
SELECT *
FROM y
You may not need this functionality. I've done the following just to o...
Removing duplicate objects with Underscore for Javascript
...
If you're looking to remove duplicates based on an id you could do something like this:
var res = [
{id: 1, content: 'heeey'},
{id: 2, content: 'woah'},
{id: 1, content:'foo'},
{id: 1, content: 'heeey'},
];
var uniques = _.map(_.groupBy(res,function(doc)...
what is the difference between a portlet and a servlet?
... Source: Servlets Vs Portlets
Similarities
Servlets and Portlets are web based components which use Java for
their implementation.
Portlets are managed by a portlet container just like servlet is
managed by servlet container.
Both static and dynamic content can be generated by Portlets and
Servl...
Is there a job scheduler library for node.js? [closed]
...
agenda is based on node-cron with a persisten layer (mongo). so the answer above is better.
– drdrej
Feb 6 '14 at 14:57
...
How to debug a maven goal with intellij idea?
...a negative score, it did help me fix the issue I had (how to debug a maven-based project in IntelliJ), and when "Googling" the issue it led me to this page.
– gbmhunter
Oct 17 '16 at 21:31
...
Difference between Pragma and Cache-Control headers?
...ached copy every time)
And the conditional requests:
Etag (entity tag) based conditional requests
Server: Etag: W/“1d2e7–1648e509289”
Client: If-None-Match: W/“1d2e7–1648e509289”
Server: 304 Not Modified
Modified date based conditional requests
Server: last-modified: Thu, 09 May...
What is a 'multi-part identifier' and why can't it be bound?
I continually get these errors when I try to update tables based on another table. I end up rewriting the query, change the order of joins, change some groupings and then it eventually works, but I just don't quite get it.
...
Python Empty Generator Function
... the same thing.
It's a subtle difference, but I honestly think the yield-based functions are more readable and maintainable.
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