Learning Vim

HOWTO Tips vim

Is it worth it? Definitely seems to be. I’ve looked at VIM in the past, tried it out too a couple of times or more, failed miserably(mostly within a day or two) and then wondered Why nutheads use VI. This would usually be followed with going back to the comfort of Emacs. I think over the years, I’ve spent more time customizing Emacs than actually getting any work done with it.

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A new look

blogging

Changed the theme of this blog and moved around the widgets a bit. Finally, I can bear looking at this blog :) - hope that holds good for you too.

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Compiling VIM

Linux Tips vim

Running ubuntu 10.10 here and ubuntu repos have only vim 7.2. I’m sure there’s a ppa out there that has 7.3, but thought that compiling vim from source would be a good exercise - plus I get to compile it with the options that I’d like rather than relying on someone’s build. Here’s the options that I enabled: CONF_OPT_PERL = --enable-perlinterp=dynamic CONF_OPT_PYTHON = --enable-pythoninterp CONF_OPT_RUBY = --enable-rubyinterp CONF_OPT_GUI = --enable-gui=gtk2 CONF_OPT_FEAT = --with-features=huge BINDIR = /usr/bin DATADIR = /usr/share Here’s hte other dependencies I had to install

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So now I’m in Vim land and this is the first time I’ve gotten far enough to feel a bit comfy. Decided to dust off my blog and start at it again - what better to do it in than in VIM. So - TA-DA - here’s the first post - courtsey VIM on ubuntu. However, as usual, it was rougher than it’s supposed to be. IN any case, I’ll forget how I got this far the next time so the next few posts will be around recording how to get VIM to post to WP.

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Have been having all sorts of weird problems with Nandroid backup/restores. Essentially, here’s the symptoms of the problem - I’d get a nandroid and restore it successfully (Amon RA/CWM would report success) - however either will get stuck at boot or if it boots successfully, will have tons of FCs and/or data loss. In most cases, I would dread seeing the green Android on boot up asking me to log in to my google account :(

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Force stop market and clear data Launch market again - it will ask you to accept terms. Do so. Should force it to rebuild the database and you should see all your apps linked to market again.

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nandroid backup - amon ra recovery Reboot recovery, install zip Install Link2SD-preinstall.zip (only on cyanogen based ROMs) Boot Play around…​make sure things work. Install other niceties/Troubleshoot Link2SD - database error.Just uninstall and reinstall. /etc/gps.conf - change to sg.pool.ntp.org Charge to 100% Reboot into recovery wipe battery stats

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Back after a long time…saw something strange today and think it deserves a post. I was cranking through Problem 47 on Project Euler. As I was optimizing the solution, the optimization actually increased run time – and I’m at a loss to explain it. So here goes: def problem_47(maxlen = 4): found = False i = 2*3*5*7 + 1 while not found: # facs = [len([j for j in uniq(prime_fac(i+k))]) for k in xrange(0,maxlen)] d = 4 for t in range(i+3, i-1 , -1): k = len(list(uniq(prime_fac(t)))) if k < 4: i = t + 1 break else: d -= 1 if d ==0: found = True print list(xrange(i, i + maxlen)) # if i % 1000 == 0: # print i The run time is about 1m2s.

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Was in need of a utility function that can retry an arbitrary function a few times before giving up. Essentially something like Gmail or Google Readers behavior when there’s no network connection. Thought it would be a few minutes job to cook up a decorator utility in Python. Boy! was I wrong! I mean, the basic use case is definitely trivially easy with Python – however, once you want something that’s more useful than that and resembles something that you’d actually use in production, the complexity goes over the top!

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Obviously, I’m not writing enough out here… part of the reason being even though wordpress’s web editor is great, I really like not having to type gobs of text in a text area. So eventually, looked around and found Windows Live Writer. Its going out on its customary spin :). So what’s been cooking? Actually a bunch of things over the last several months: Stuff – on which I mean to put up individual posts

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