markd | rich html builder for markdown , wiki and textile

This is another dumb question. I'm really new at django and I don't know what I need to do. Can someone please help me? Or send some pages of documentation? The goal is to make mark selector assigned to child that it displays for. There is some of my code.

My HTML

Here is my case:

A. new users messages

produce: every time any user data changed.

markded as: U1, U2, ... Un.

B. user attribute metadata change messages

e.g: user has two attributes name, email, then added a custom attribute profile.

produce: every time user attribute metadata changed.

marked as: M

• Same User's data should follow its order.

• consumption of metadata change should always: before consuming user data message after this change, after user data message before this change.

message natural order:

(0:U1)->(1:U2)->(2:U1)->(3:U3)->(4:U1)->(5:M)->(6:U1)->(7:U2)->(8:U2)->(9:M)->(10:U1)

accepted consuming order:

(0:U1)->(2:U1)->(3:U3)->(1:U2)->(4:U1)->(5:M)->(7:U2)->(6:U1)->...

If there is no M in it, I can put different User data into different partitions, to increase throughout, but consider the existence of M's ordering requirement, can I make different partition for this topic?

I have only just started using alert boxes (colored note boxes in the jupyter markdown cells). These are very useful. However, I am trying to include a bulleted list within the colored box and it does not seem to work. Is there a simple way to do this, or I should just give up? Here is some documentation about colored boxes

For an example, include the code below in a jupyter's markdown cell. The idea is to be able to itemize with bullet points.

I am creating an implicit android intent. The phone's camera app opens up. However, when I take the photo the camera app closes but the Activity which started the camera intent is not opened. The phone goes to the main screen. If I open the app back up it is still in the camera app. I can click the back button from the camera and go back the Activity.

The intent is started with this line.

I have a dataframe with the below structure:

I have a simple table in the following format:

I am encountering an error when trying to group my data based on categories of a variable and I am not sure why it is happening because I have used the two most widely recommended methods, subset(dataframe, variable==X) and dataframe[dataframe4variable ==X], successfully with past data sets and just now using the mtcars dataset.

The problem is that when I try to run my code, I get an error in which R just prints out the names of all of my variables(see below).

I am not quite sure how to "show" this problem-- any recommendations regarding what information would be useful to you all would be greatly appreciated. This problem is not reproducible with other datasets. Thank you for any advice you are able to give.

My dataset "wits" has 363 observations and 92 variables. My variable "complete" is a factor variable with four levels: "completed all", "stopped after demos", "stopped after consent", and "skipped manip bc poor id." I would like to create a new dataset made up only of participants with "completed all". I have tried these two methods:

I need to use the Annual Building Permits by Metropolitan Area Data distributed by the US Census Bureau, which are downloadable here as fixed width format text files. Here is an excerpt of the file (I've stripped the column names as they aren't in a nice format and can be replaced after reading the file into a date frame):

If I create a data base connection within a function, the connection objects gets destroyed when the function finished executing. Does this reliably close the data base connection, or would it better to to close it manually first?

Why I need to know this:

I am working on a package that creates data base connections on the fly with either RODBC or RJDBC as backend. I designed my function interfaces so that you can pass in either username and password, or a connection object. Usually, when I pass in a connection object I do not want the connection to be closed on the termination of the function, while when I pass in username and password I want it to be closed.

If I do not have to worry about open connections, it would simplify things a lot for me and also save me a lot of headaches.

Answer & More:

I markded Benjamin's answer as the answer since it gives good advice, though actually what I was looking for is more Marek's comment that (paraphrased:) connections can be open after the connection object is destroyed and there is no way to access them from R any more.

I ended up going for a solution that involves creating an R6 class and defining finalize() method that closes the connection (it's a more powerful than on.exit()), but that is beyond the scope of this Question.