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Remove NA values from a vector
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Trying ?max, you'll see that it actually has a na.rm = argument, set by default to FALSE. (That's the common default for many other R functions, including sum(), mean(), etc.)
Setting na.rm=TRUE does just what you're asking for:
d <- c(1, 100, NA,...
When should we implement Serializable interface?
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From What's this "serialization" thing all about?:
It lets you take an object or group of
objects, put them on a disk or send
them through a wire or wireless
transport mechanism, then later,
perhaps on another computer, reverse
the process: resurrect the original
...
Set up DNS based URL forwarding in Amazon Route53 [closed]
... how-to guide for my blog detailing what I did.
Here is what I came up with.
Objective
Using only the tools available in Amazon S3 and Amazon Route 53, create a URL Redirect that automatically forwards http://url-redirect-example.vivekmchawla.com to the AWS Console sign-in page aliased to "...
Is there a concise way to iterate over a stream with indices in Java 8?
Is there a concise way to iterate over a stream whilst having access to the index in the stream?
22 Answers
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Why doesn't CSS ellipsis work in table cell?
...ssible solution is to set table-layout: fixed; for the table, and also set it's width. For example: http://jsfiddle.net/fd3Zx/5/
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Make HTML5 video poster be same size as video itself
Does anyone know how to resize the HTML5 video poster such that it fits the exact dimensions of the video itself?
13 Answer...
Google Chrome redirecting localhost to https
...used by HSTS - see http://en.wikipedia.org/wiki/HTTP_Strict_Transport_Security
If you have (developed) any other localhost sites which send a HSTS header...
eg. Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
...then depending on the value of max-age, future requests to lo...
How to check Oracle database for long running queries
...:-
select S.USERNAME, s.sid, s.osuser, t.sql_id, sql_text
from v$sqltext_with_newlines t,V$SESSION s
where t.address =s.sql_address
and t.hash_value = s.sql_hash_value
and s.status = 'ACTIVE'
and s.username <> 'SYSTEM'
order by s.sid,t.piece
/
This shows locks. Sometimes things are going s...
Amazon EC2, mysql aborting start because InnoDB: mmap (x bytes) failed; errno 12
...met the same problem when I tried to run a wordpress on my micro instance without RDS.
Adding a Swap page solved the problem for me.
You can follow steps below to setup the swap space.
If it still doesn't work for you, consider using the RDS service.
===============================================
I...
Add border-bottom to table row
... 3. I need a way to add a border for the bottom of every row tr and give it a specific color.
16 Answers
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