similar youngsters anti sj stars includes @gogreen18 n @shoe0nhead . They typically don't have much knowledge (e.g. professors of subjects). but lacy green is at least “sex expert” in the mass edu sense, and shoe0nhead is actually quite funny, as comedian.
fking roaming millennial https://twitter.com/RoamingMil liking random shit on twitter. just unfollowed. xah tip: if you want to be popular or run business on twitter, don't like things not very on topic for your readers.
twitter has this nasty thing, of showing tweets someone liked. you can't turn off, other than on each post click “i don't like this tweet” on each. twitter does that to gather personal data about you, so twitter can sell it.
most hip love of lisp features r wrong.
• macros complicates code logic, harder read/write.
• symbols vs string. symbols pollutes obarray.
• advice complicates code logic, thwart expectation, harder debug.
• lisp read syntax ≈ useless. hobs progress in builtin parser.
i will not be setting google as default. i rather be inconvenient than get politically biased result from google. i'll just goto google manually when needed.
after using duckduckgo.com for half a year now, it is decidedly inferior to google search.
for popular simple search queries, it works fine. But if you are looking for anything weird or uncommon, google is better. i wonder how bing's doing
this is quite an incredible design concept. the question is working out other engineering details https://www.bicycling.com/bikes-gear/a22092182/ceramicspeeds-driven-concept-might-become-the-worlds-most-efficient-drivetrain/
emacs lisp Hash Table tutorial. http://ergoemacs.org/emacs/elisp_hash_table.html updated See also: Elisp: Association List http://ergoemacs.org/emacs/elisp_association_list.html
#Emacs Xah Math Input Mode. http://ergoemacs.org/emacs/xmsi-math-symbols-input.html New version. updated for emacs 26's ucs-names change. Now selection on unicode name works again.
@xahlee tried now in Python 3: concat vs. join is about 60 ms vs. 45 ms on my example. So yes, it's not "as fast" but not a magnitude slower as it's claimed. I'd say, fast enough to never actually care unless proven to be a bottleneck in a particular piece of code.
Workman Keyboard Layout is still going strong. http://xahlee.info/kbd/dvorak_vs_colemak_vs_workman.html it has a new home page #xahkeyboard
#Python trick to Append String in Loop efficiently http://xahlee.info/python/python_append_string_in_loop.html and observe a design problem programing languages, how a programing language requires hack. from my understanding, it seems impossible for a programing language to avoid such problem. #xahcode
for flight, some of the top interesting properties is can it: hover, glide, fly backward, agility, speed, lift power, enegy efficiency. For ground based locomotion, some are: stability, speed, agility, power, carrying capacity, efficiency, terrain, control complexity.
why are we interested in flight here? because, the various mechanisms of birds/insects, are interesting with respect to engineering. but note, walk/run is also quite interesting mathematically, in that the number of legs, and “gaits”, have diff properties and limits.
more generally, there are all considered locomotion. that is, how a animal propels. so what's the diff between “flight” and “walk/run”. The essence, is one is based on fluid dynamics, vs friction.
should we include sting-ray as flying? depends. one is air, one is water. In physics, they are both fluid dynamics. But due to density, the mechanism and flight property, is significantly different. If we include, then we have types such as: dolphin, shark, ray, even octopus et al.
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