Top "Head" questions

How do I use 'git reset --hard HEAD' to revert to a previous commit?

I know that Git tracks changes I make to my application, and it holds on to them until I commit …

git head git-reset git-revert

Pandas - Get first row value of a given column

This seems like a ridiculously easy question... but I'm not seeing the easy answer I was expecting. So, how do …

python pandas indexing head

How to read first N lines of a file?

We have a large raw data file that we would like to trim to a specified size. I am experienced …

python file head

Is header('Content-Type:text/plain'); necessary at all?

I didn't see any difference with or without this head information yet.

php http-headers content-type head response-headers

Get first element of Series without knowing the index

Is that any way that I can get first element of Seires without have information on index. For example,We …

python pandas dataframe series head

Head and tail in one line

Is there a pythonic way to unpack a list in the first element and the "tail" in a single command? …

python list tail head

Difference between HEAD and master

What is the difference between the HEAD and master in Git? I did a clone of a project on GitHub …

git github head master

What is the HEAD in git?

There seems to be a difference between the last commit, the HEAD and the state of the file I can …

git head

http HEAD vs GET performance

I am setting-up a REST web service that just need to answer YES or NO, as fast as possible. Designing …

http get head

inject a javascript function into an Iframe

This link (archived version) describes how to inject code from a script into an iframe: function injectJS() { var iFrameHead = window.…

dom iframe head javascript