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Walker Hale IV
Works at Baylor College of Medicine
Attended Rice University
Lives in Houston, TX
148 followers|34,975 views
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Walker Hale IV

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Practical answer to human limitations…

https://www.youtube.com/watch?v=iHzzSao6ypE
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Walker Hale IV

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Quite interesting. For better or worse, the advice plays into my natural laziness :-)
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That's a little painful.
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Have him in circles
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Walker Hale IV

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This virus comes in 5 separate pieces, and 4 pieces must independently infect a cell to start replicating.

http://www.npr.org/sections/goatsandsoda/2016/08/25/491261766/new-virus-breaks-the-rules-of-infection
A virus is generally like a little ball with a few genes. Now scientists have found one that's broken up into five little balls — as if it were dismembered.
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Walker Hale IV

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A metaphor for Google? Read the comic.

http://www.smbc-comics.com/comic/things-have-changed
Discuss this comic in the forum. August 25, 2016. Discuss this comic in the forum. August 24, 2016. Discuss this comic in the forum. August 23, 2016. Discuss this comic in the forum. August 22, 2016. Discuss this comic in the forum.
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Walker Hale IV

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Now the uncertainties Python package can sum tens of thousands (or much more) of numbers with uncertainty quite fast. I am proud to have finally found a way of massively speeding up the previous version of the package!

The uncertainties package can also be used to quickly obtain for instance cumulative sums of a large number of values with uncertainties (in addition to most mathematical operations on numbers, and even some operations on matrices).

100,000 numbers with uncertainty are summed about 5,000 times faster with version 3.0, compared to the previous version. Going from quadratic to linear time complexity does wonders. :) Finding a way to do it required quite a lot of thinking, even if I wonder why I did not find my current solution earlier!
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Walker Hale IV

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I wanted to turn a script into an app on Mac OS. Turns out that it's all about having the right directory structure. Remember to include any dependencies inside the resulting bundle directory, along side your script:

https://christopher.su/2012/creating-mac-applications-shell-scripts/
Creating Mac Applications from Shell Scripts. In the past, I've used a variety of methods to turn shell scripts into native applications. Each method has its own pros and cons, which I will attempt to explain in this post.
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Interesting. Will try it.
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Walker Hale IV

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Demonstration of copying files from disparate directories into a synthetic directory inside a new tarball:

https://gist.github.com/walkerh/50d29c13c843464f6dd2d3f0be4db9ab

cat files.list | xargs tar -cf files.tar --xform='s+.*/+inner_directory_name/+'
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Have him in circles
148 people
M Morgan's profile photo
Gloria Scherer's profile photo
Doug Latornell's profile photo
Kevin Horn's profile photo
Mary Norcross's profile photo
Adinarayana Jakkamsetti's profile photo
Robert King's profile photo
Noufal Ibrahim's profile photo
ahmed ziad's profile photo
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Houston, TX
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Programmer
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  • Baylor College of Medicine
    Programmer, present
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  • Rice University
    Physics, 1981 - 1985
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