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What is the purpose of wrapping whole Javascript files in anonymous functions like “(function(){ … }
...}
})();
In the first example, you would explicitly invoke globalFunction by name to run it. That is, you would just do globalFunction() to run it. But in the above example, you're not just defining a function; you're defining and invoking it in one go. This means that when the your JavaScript file...
mmap() vs. reading blocks
... they were in the past, the overall performance can't really be determined by adding up the pros and cons, but only by testing on a particular hardware configuration. For example, it is debatable that "A call to mmap has more overhead than read" - yes mmap has to add mappings to the process page tab...
What to learn for making Java web applications in Java EE 6? [closed]
...he Java EE 6 Web Profile (and then add things if you want to go further).
By doing this, 1) you'll get started and you'll learn brand new things and 2) you'll give some time to all other frameworks and/or tools to adapt and prove that there is still a need for them. And if there is, it will still b...
What is a servicebus and when do I need one?
...he OSI stack for Ethernet. With the bus, this is the client libraries used by application code.
Ultimately, you can view a service bus as providing the next higher level of abstraction for building distributed systems. You can use it also for client-server communication to give you durable one-way ...
What's the difference between including files with JSP include directive, JSP include action and usi
...called headers) and codas
(also called footers) for a group of JSP pages by adding
<include-prelude> and <include-coda> elements respectively within
a <jsp-property-group> element in the Web application web.xml deployment descriptor. Read more here:
• Configuring Implicit...
How to apply !important using .css()?
...
The problem is caused by jQuery not understanding the !important attribute, and as such fails to apply the rule.
You might be able to work around that problem, and apply the rule by referring to it, via addClass():
.importantRule { width: 100px ...
psql: FATAL: Ident authentication failed for user “postgres”
...res 9.1 on Ubuntu 12.04. (Worked for postgres 9.3.9 on Ubuntu 14.04 too.)
By default, postgres creates a user named 'postgres'. We log in as her, and give her a password.
$ sudo -u postgres psql
\password
Enter password: ...
...
Logout of psql by typing \q or ctrl+d. Then we connect as 'postgres...
How to convert currentTimeMillis to a date in Java?
...ality you need. "Date date=new Date(millis);" provided in the other answer by user AVD is going to be the best route :)
– Dick Lucas
Jul 17 '15 at 18:15
1
...
How do I round to the nearest 0.5?
...
Multiply your rating by 2, then round using Math.Round(rating, MidpointRounding.AwayFromZero), then divide that value by 2.
Math.Round(value * 2, MidpointRounding.AwayFromZero) / 2
...
SQL “between” not inclusive
... "beginning of" or "the end of".
BETWEEN should be avoided when filtering by date ranges.
Always use the >= AND < instead
SELECT * FROM Cases
WHERE (created_at >= '20130501' AND created_at < '20130502')
the parentheses are optional here but can be important in more complex queries...