A Public Notebook

not a wiki!


last edit to this page: 2018-08-08

what is here: small crystals of information i have found useful to have around, easily accessible, where i know where to find it, with a minimal loading time, on a static page.
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the page directory

The «uncontextualized lines of code» section.

<meta name="viewport" content="width=device-width, initial-scale=1" />
█ ▄ ▀ U+2588 U+2584 U+2580
! " # $ % & ' ( ) * + , - . / 0 1 2 3 4 5 6 7 8 9 : ; < = > ? @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z [ \ ] ^ _ ` a b c d e f g h i j k l m n o p q r s t u v w x y z { | } ~
! " # $ % & ' ( ) * + , - . / : ; < = > ? @ [ \ ] ^ _ ` { | } ~
LaTeX math-mode spacing characters in increasing whitespaceyness order: \! (negative) \, \: \; \ \quad \qquad
⊨ U+22A8 \models &#8872;
{\centering \includegraphics[width=\textwidth, height=20mm]{filename} }
# bash:
PS1="\[\e[3m\e[1m\]\t \h:\w \$\[\e[0m\] "

for (( i=1; $i < 19; i++ )) ; do {
    echo $i ;
} ; done

for f in foo bar baz ; do {
    echo $f.qux ;
} ; done

STARTTIME=$(date +%s)
sleep 1
ENDTIME=$(date +%s)
echo done in $TOTALTIME

A=0; B=1;
if ((A != 0 || B != 0)) ; then echo l ; else echo O; fi

ls -l | awk '{Z+=$5};END{print Z}'
binmode(STDOUT, ':utf8'); binmode(STDIN, ':utf8'); binmode(STDERR, ':utf8');
perl -mMIME::QuotedPrint -n -e 'print MIME::QuotedPrint::decode_qp($_);' < in.quotprint > out
perl -E "opendir(my $dh, '.') || die qq($!); for(1,2){ readdir($dh); } my $i = 0; foreach (sort readdir($dh)) { $i += 2; my $j = 1000-$i; my $si = sprintf('%03d.png',$i); my $sj = sprintf('%03d.png', $j); say qq(copy $_ $si); say qq(copy $_ $sj); }"
loop control: next for another iteration of this loop now, including re-evaluating the conditional; last to exit this loop, ignoring any continue block; redo to redo the loop block but not the conditional, ignoring continue; a continue block is executed before the conditional of the loop, like the third part of a C for loop.
gnu octave:
pkg load symbolic
syms x1 x2 x3
A=[-2 6 0 ; 8 5 3 ; 1 9 -1 ; 3 1 1]
x=[x1 ; x2 ; x3]
ans = (sym 4x1 matrix)
⎡   -2⋅x₁ + 6⋅x₂   ⎤
⎢                  ⎥
⎢8⋅x₁ + 5⋅x₂ + 3⋅x₃⎥
⎢                  ⎥
⎢  x₁ + 9⋅x₂ - x₃  ⎥
⎢                  ⎥
⎣  3⋅x₁ + x₂ + x₃  ⎦
<time datetime="1970-01-01 00:00">epoch</time>
verymagic→ \v \m \M \V ←verynotmagic
systemctl reboot ; systemctl poweroff
&lt; &amp; &gt; &apos; &quot;

The section with fragments of text.

þ Þ ð Ð Č č Š š Ž ž ʃ Ʃ ʒ Ʒ ç ŋ Ŋ
ɕ ɟ ɡ ɣ ɦ ɬ ɸ ɹ ɾ ʋ ʎ ʑ ʔ ʕ β θ χ
ʰ ʲ ʷ ˣ ˥ ˦ ˧ ˨ ˩ ː ˈ ˌ
ø ɛ œ æ ɶ ɪ ʏ ɨ ʉ ə ɵ ɐ ɯ ɤ ʌ ɔ ɑ ɒ
U+0361 o͡o U+035C o͜o
· •
α β γ δ ε ζ η θ ι κ λ μ ν ξ ο π ρ σ τ υ φ χ ψ ω (ς)

Ϙ ϙ Ϟ ϟ


Technical biological usage: “poison” is the general term; a “toxin” is a poison made by a living organism; and a “venom” is a toxin that is bitten or stung by an animal.

1.12 76522.7 173.2 74250.3 9205663176794256917
QʕHWJ 42615374 15848390

conjunction is ∧ and ; disjunction is ∨ or ; nand is the up arrow ↑ ; nor is the down arrow ↓.

gauge vise ogre choir tongue

the wreck of the titanic is being eaten by archaea at a rate of two grams a second




starboard is right and green, port is left and red: port wine is red, and red is the colour of the left

starboard → styrbordtyyrpuuri

transitiveness of a verb: whether it can take a direct object or not (“x exists” vs “x causes y”)

rectō and versō foliō are the front and back side of a leaf: in a left-to-right language like this one, recto is the odd-numbered right side of a spread while the verso of the same spread is the left side with the preceding page number.

the obverse=heads of a euro coin is the national side with the dates, the reverse=tails is the common side with the value.

chromebooks don’t have a super button between lctrl and lalt, instead just having a massive lctrl and lalt, so beware of that before buying one to hack as a generic light linux machine

blcn mccr

ultra: 3 m action 7 m ctsc (d.activ 0:00 p.open 1:51 eoe s 2:06 eoe e 3:45 t2klc 3:57 t2thr 4:45 ! drk s 6:00 (15 kpl) drk e 7:30 drg atkbl 8:58 ded 9:10 cutsc 9:46); skyf 3:09

(...) = ^D1000 ; rip jsb ← an old pdp macro assembly programmer’s joke, with a compiler that used octal by default.

median: the spot where half is above and half below. mode: the most common. arithmetic mean: the sum of n items divided by n. geometric mean: the nth root of the product of n items (for positive items, equal to the antilogarithm of the arithmetic mean of the logarithms of the items). the geometric mean is the only proper mean when averaging normalized figures (such as percentages). [mediaani, moodi, aritmeettinen tai geometrinen keskiarvo]

ミスター スパーコル パワー クリン!

phthalo blue is opaque. dioxazine purple: pv23. «yellow oxide» is made of iron, and is opaque.

Вфхуи ZoPиᴇ m СФИР Et. SEꟼОНЖ Сʜᴇьzon фt Уmᴇztоіх ©1959 zᴇm

35.314666721488 cubic american feet per cubic standard meter

css margin and padding: margin is outside the element, padding is inside. shorthand option order (same for both): top right bottom left | top right&left bottom | top&bottom right&left | all. Observe the difference: margin r&l of 2em padding r&l of 2em

terminate an ssh connection (assuming default escape char setting): enter + ~. (=altgr-¨ twice on a european dead key layout)

The section with links within

8024.html addviolence.html brownie.html cake.html clock.html empty.html euclid.html latextbl.html ntae.html ogmot.html randomimg.html template.html toucan.html uc.html utc.html varicode.html zh.html

The section with links without

Wikipedia: Mathematical operators and symbols in Unicode wiki: block elements wiki/List of XML and HTML character entity references my xkcd garden (2016-04-07) my other garden (2016-04-08) the wake wiki

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