bakul

27 ms·

271.
by bakul 8y ago
With no freeing, memory used is the sum of all allocations. With freeing, it is max of the allocation for active objects at any given time. The former can ask for much more memory from the OS for some programs that generate a lot of temp ga
272.
by bakul 8y ago
How does this compare to Nils Holm’s subc compiler that has somewhat similar goals? There is a book describing the compiler as well (though the current version of the compiler supports a larger subset of the C language). https://
273.
by bakul 8y ago
In John Reynolds "The Discovery of Continuations" paper he cites an interesting observation by Doug McIlroy: "So while van Wijngaarden said that goto's were unnecessary ... , Dijkstra stretched the point to say that goto
274.
by bakul 8y ago
Did your experiment show a measurable signal difference between stable vs wandering attention? Mindfulness supposedly helps with executive dysfunction (either due to frontal lobe brain injury or ADHD). It would be an interesting experiment
275.
by bakul 8y ago
http://web.mit.edu/6.111/www/f2017/handouts/FFTtutorial12110... shows an FFT implementation using a Cyclone EP2C20 FPGA. It can do 50ksps, 1K points, 12bit precision, 100 µsec/1K complex FFT @ 50Khz
276.
by bakul 8y ago
I bet there are people who have watched TV 6 hours a day for 29 years (over 62,000 hours). I guess you can call them "olympic level" couch potatoes. Their brainwaves should also be studied and compared with these "olympic lev
277.
by bakul 8y ago
iamelgringo’s comment was pretty convincing. Thanks for referencing it.
278.
by bakul 8y ago
What would you do with such a system that is innovative and not just more of the same?!
279.
by bakul 8y ago
Neat!
280.
by bakul 8y ago
Are there any shorter programs than these two k3 ones?
281.
by bakul 8y ago
{:[~x!15;"fizzbuzz";~x!3;"fizz";~x!5;"buzz";$x]}'1+!100 {:[0<#w::[x!3;"";"fizz"],:[x!5;"";"buzz"];w;$x]}'1+!100
282.
by bakul 8y ago
I compiled linux on the raspberry pi just for kicks! Most people don't recompile the kernel so it doesn't matter but this just goes to show how misguided our blind quest for micro-performance has been.
283.
by bakul 8y ago
It took a minute to compile plan9 kernel from scratch on the original raspberry pi (running plan9). You can even cross compile a x86 kernel in similar time. 10 seconds in 9vx emulator running on FreeBSD/amd64. I don’t recall the detail
284.
by bakul 8y ago
Indeed. Meant to write "Go allows safe concurrent access but doesn't stop unsafe concurrent access to shared data structures" Thanks & sorry for the confusion.
285.
by bakul 8y ago
Concurrent pascal didn't allow unsafe concurrent access to shared data structures. Go allows safe concurrent access but doesn't stop such access. Its authors encourage people to use channels but this sharing is intrinsic -- on
286.
by bakul 8y ago
This article seemed inconclusive. They identified some differences of factors between things going right vs wrong but didn’t follow through with a scientific study. Atul Gawande’s “The Checklist Manifesto” comes to mind, where he argues tha
287.
by bakul 8y ago
In a way the whole point of making todo lists is mindfulness -- to pay attention to a task when needed. The point of automation is exactly opposite -- you don't want to pay attention to something! A todo list is more effective if you
288.
by bakul 8y ago
In my .zshrc I have todo() {vi '+$' ~/todo/$(date +Y/%m)} +() {echo + $* >> ~/todo/$(date +Y/%m)} -() {echo - - $* >> ~/todo/$(date +Y/%m)} Each month's entr
289.
by bakul 8y ago
$ size /usr/local/plan9/bin/acme text data bss dec hex filename 356886 14680 52332 423898 0x677da /usr/local/plan9/bin/acme
290.
by bakul 8y ago
On the other hand writing such packages becomes easier as only two syntax extensions are needed (package header and import). You can easily abstract a package by replacing a concrete type with a package level parameter. More importantly, th
291.
by bakul 8y ago
Think of it as a package macro.
292.
by bakul 8y ago
If you want a more motivating example, try implementing generic array operations such as reduce, scan, each, reverse etc. Ideally these should be as easy to use as this example: x := reduce(func(a, b int)int{return a*b}, []int[1,2,3])
293.
by bakul 8y ago
Try implementing a shared map type where access is protected by a mutex and otherwise works just like Go's builtin map type (which is a generic map type).
294.
by bakul 8y ago
Did you consider parameterized packages? The idea is you can declare a set of related objects/types/methods as well as have concrete type specific initialization. E.g. package stack[t] type Type []t func New() Type { retur
295.
by bakul 8y ago
Using a Scheme like syntax, */x is ((over +) x). That is, over is a higher order function, yielding a new fuction.
296.
by bakul 8y ago
The original reason may have been that k3 was not open source and the free version was limited. But in general people write these things for all sorts of reasons. Just as there are dozens of Scheme interpreters.
297.
by bakul 9y ago
I’ve used these aliases since I first started using csh (below syntax for zsh): alias .=cd alias ,=pushd alias ,,=popd alias ,.='dirs -v' No need to alias .. as in zsh you can use a dir name as a command to cd
298.
by bakul 9y ago
Most anyone can "do" origami given instructions. But no one came up with a single fold design until David Mitchell did -- minimalist designs are only easy in hindsight. At the other extreme we have Robert Lang's amazing cre
299.
by bakul 9y ago
http://www.origamiheaven.com/ & http://www.origami-instructions.com/ have many examples with instructions for single sheet designs.
300.
by bakul 9y ago
Origamists create an elephant with nothing more than one fold! See some minimalist elephant designs by David Mitchell and Paul Jackson: http://www.origamiheaven.com/pdfs/elephantsextreme.pdf

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