Postings on living in an Emacs world. Posts will be mostly on using Emacs, related functions and tools.
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Saturday, September 19, 2009
Friday, September 11, 2009
An improved or better Quicksort?
Via reddit, this is an interesting post on using 2 pivots to do quicksort with an attendant savings in swaps and speed. I wonder how soon this will get into other tools.
Sunday, September 6, 2009
Getting Slide or Frame numbers in Beamer Warsaw Theme
While preparing a presentation using Beamer, I decided to get the slide numbers(frame numbers in Beamer parlance) into the presentation just to pace my slides. And it turns out that it's not easy as it sounds. I tried a variety of setbeamertemplate options and even considered editing the template. I believe beamerouterthemesplit.sty is the file to change though I have no idea what I have to do.
A bit of googling got to me to this page and I have no idea why the suggestion works. But it does. I have broken it into 2 lines with a extraneous \ at the end of the first line.
A bit of googling got to me to this page and I have no idea why the suggestion works. But it does. I have broken it into 2 lines with a extraneous \ at the end of the first line.
\title[Short Title \hspace{4em} \insertframenumber\ \
of \inserttotalframenumber]{Full Title}
Friday, September 4, 2009
An Emacs keybindings help tip
In Emacs, C-h k or C-h m will show you the help regarding what function is bound to the key or what keys are bound in the buffer you're currently working on. If it's a drag to scroll through the entire list or if you want to narrow it down, you can press the prefix keys and then C-h to get only those keybindings that start with the prefix key.
For example, pressing the prefix C-x r and then C-h (C-x r C-h) will only show the help regarding the key bindings starting with the prefix C-x r. This is useful when you enable a minor mode that has a prefix key combination that you use infrequently. In the normal case, you'd have to invoke C-h m and then scroll down to the respective section in the help buffer. If you knew the prefix, then pressing the prefix followed by C-h will be "context" sensitive help.
Based on the thread here on gnu.emacs.help.
For example, pressing the prefix C-x r and then C-h (C-x r C-h) will only show the help regarding the key bindings starting with the prefix C-x r. This is useful when you enable a minor mode that has a prefix key combination that you use infrequently. In the normal case, you'd have to invoke C-h m and then scroll down to the respective section in the help buffer. If you knew the prefix, then pressing the prefix followed by C-h will be "context" sensitive help.
Based on the thread here on gnu.emacs.help.
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