johndcook.com > blog
Up and down the abstraction ladder
2+ day, 58+ min ago —...Gian-Carlo Rota made a profound observation on the application of... ...This post will expand a little on Rota’s original statement and a... ...When I started working in the Biostatistics Department at MD Anderson... ...And yet Rota discusses how this idea was developed over decades into...
johndcook.com > blog
Making documents with makefiles
4+ day, 21+ hour ago —...For more extensive examples of how to use makefiles for a variety... ...you need to create a PDF and a Microsoft Word version of a report...
johndcook.com > blog
Applied abstraction
5+ day, 35+ min ago —...In fact, you can give it more general collections of more general... ...“Good general theory does not search for the maximum generality,... ...This is the kind of thing some Haskell programmers love to do.... ...discovered in some concrete setting, then codified in a more general...
johndcook.com > blog
What can JWST see?
1+ week, 1+ day ago —...Of course the JWST isn’t located on Earth, but JWST is close to Earth... ...If JWST can see Titan with this kind of resolution, how well could...
johndcook.com > blog
Choosing a Computer Language for a Project
1+ week, 5+ day ago —...But compared to mainstream choices like Python, C, C++ and Java (... ...(or you could do what Facebook/Meta did and just write a new compiler... ...performance rather than going through costly abstractions or an interpreter layer... ...It is said that programmer productivity is limited by the ability...
johndcook.com > blog
Finding strings in binary files | strings(1)
2+ week, 1+ day ago —...a sequence of four or more bytes that correspond to printable ASCII... ...There are 98 printable ASCII characters and 256 possible values for... ...Cook, PhD My colleagues and I have decades of consulting experience...
johndcook.com > blog
Extract text from a PDF
2+ week, 2+ day ago —...Arshad Khan left a comment on my post on the less and more utilities... ...intended, maybe even in a way the author tried to discourage.... ...Related post: Your PDF may reveal more than you intend John D....
johndcook.com > blog
Length of a general Archimedean spiral
2+ week, 2+ day ago —...In this post we want to look at the general case where n might not... ...Cook, PhD My colleagues and I have decades of consulting experience...
johndcook.com > blog
Length of an Archimedes spiral
2+ week, 4+ day ago —...I may look at more general values of n in a future post.... ...According to Mathworld, the exact length of the spiral is πbm √(1... ...Cook, PhD My colleagues and I have decades of consulting experience...
johndcook.com > blog
More is less
2+ week, 5+ day ago —...Daniel Halbert wrote more in 1978.... ...Mark Nudelman a similar program with more functionality in 1984 which... ...Ludwig Mies van der Rohe (1886–1969) who often quoted it.... ...He was born Ludwig Mies and later appended van der Rohe....