Dweets by u/DaSpider

function u(t) {

c.width=1920 // clear the canvas
for(i=0;i<9;i++)
x.fillRect(400+i*100+S(t)*300,400,50,200) // draw 50x200 rects

} // 122/140

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    u(t) is called 60 times per second.
    t: Elapsed time in seconds.
    S: Shorthand for Math.sin.
    C: Shorthand for Math.cos.
    T: Shorthand for Math.tan.
    R: Function that generates rgba-strings, usage ex.: R(255, 255, 255, 0.5)
    c: A 1920x1080 canvas.
    x: A 2D context for that canvas.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Food

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DaSpider

function u(t) {

eq="x**4-4*x-99"
t?1:(x=9e9,i=-5e8)
f=(x)=>eval(eq)
if(f(x+i)>0)x+=i;else i/=10
throw "x ≈ "+x+"\n"+eq+" = "+f(x)+"\nerr = "+i

Jan 20 2026 3:56 AM UTC

}// 126/140

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Brutre force solver for eq=0, any equation in JS/Math. format with real solutions

u/DaSpider

For other solutions, switch signals on x andi/change initial value, etc. Based on a classroom example of "loops" t.co/ADQm7hLeCD
u/DaSpider

# In Python eq = "3*x**4-2*x**3+4*x-100" def f(x): return eval(eq) x, i = 9e9, -5e7 while abs(i)>1e-16: if f(x+i)>0: x+=i else: i/=10 print(f"\rx ≈ {x}\n{eq} = {f(x)} (err={i})",end="")

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DaSpider

remix of d/32746 by u/KilledByAPixel

function u(t) {

t*=780
$=a=>a.repeat(300)
x.fillText($(['🟥','⬜'][t>360&t<720]),1,t)

Nov 12 2024 6:41 PM UTC

}// 67/140

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🇦🇹

u/joeytwiddle

#flag

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DaSpider

remix of d/32731 by u/SockTaters

function u(t) {

$=a=>a.repeat(47),x.fillText($('🔵')+$('⚪')+$('🔴'),0,t*720)

Nov 12 2024 2:31 AM UTC

}// 58/140

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🇫🇷

u/lewdev

Interesting concept. Using emoji to color stuff will save a lot of text.

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DaSpider

function u(t) {

eval(unescape(escape(`昽渽㸢䴱〰ぃ䴹〰䐵〰䍄㐰ぃ㄰じ䌹が㔰塌㐰報ぉ堹嘵䥖㑉ㄢ⹲数污捥⠯⡜䐫⤨層⬩⽧Ⱘ弬爬搩㴾爮牥灥慴⡮⽤Ɱ┽搩⤻渽挮睩摴株㴱㬠砮景湴㴧㜶敭⁳✻砮晩汬呥硴⡦⡴⨳⤬ㄬ港㈬温`).replace(/u(..)/g,"$1%")))

Nov 10 2024 3:58 AM UTC

}// 131/140

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#Roman #Numerals #Counter

u/fentbiggesthater

ive seen these symbols before, stolen?
u/DaSpider

... from ancient rome

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DaSpider

remix of d/31802 by u/DaSpider

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪀽𠐽𜠰𜀬𠠽𠐯𞀭𚁴𚠳𯀰𚐬𩠽𚁩𛁪𛁫𛁬𚐽🡻𮀮𩡩𫁬𤱴𮑬𩐽𦰧𨡬𭑥𙰬𙱹𩑬𫁯𭰧𛀧𬡥𩀧𧑛𪑝𞱸𛡦𪑬𫁒𩑣𭀨𪰬𞐪𪠬𞐪𫀬𞐹𚑽𞱦𚀰𛀰𛀰𛁂𚐻𩠨𜐬𝠬𜀬𠠩𞱦𚀰𛀴𛁔🐹𚰹𚠨𠠫𤰨𭀪𝠪𣑡𭁨𛡐𢐩𚐬𠐩𞱦𚀲𛀸𛁔𛁁𚐻𭁨𬡯𭰠𠠭𜠰𝀴`.replace(/u../g,'')))

Jul 14 2024 2:30 AM UTC

}// 136/140

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🇺🇦 x 🇷🇺 update

Show more comments…
u/384.cz

:-(
u/384.cz

kinda dumb
u/joeytwiddle

#ukraine #russia #flag I like it (the animation, not the war)
u/txzl

The worst demo I've seen so far. Hope you will get banned
u/rsc

You think this is funny? What's next, a demo about bombing a children's hospital?
u/cantelope

shakes fist at everyone

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DaSpider

remix of d/32045 by u/DaSpider

function u(t) {

s=60,T=s*t|0
x.font="4em s"
x.fillText([...'╱ ╲ ╳'][99*t**t%5|0],1999-s*T%3000,(s+s*(T/49|0)))

Jun 21 2024 5:27 PM UTC

}// 94/140

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Broken #Maze

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DaSpider

function u(t) {

s=60,T=s*t|0
x.font="4em s"
x.fillText([...'╱╲╳ '][5*t**t%2|0],1999-s*T%3000,(s+s*(T/49|0)))

Jun 21 2024 6:56 AM UTC

}// 92/140

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Classic Maze

u/dabl03

Wow, random maze

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DaSpider

function u(t) {

t?i++:i=0
x.fillStyle=['black','white','green','red'][i]
i==3?x.rotate(.8):0
i<3?x.fillRect(0,i*360,10920,999):x.fillRect(1,1,750,800)

May 17 2024 12:42 AM UTC

}// 134/140

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Free Palestine!

u/DaSpider

#Palestine #Flag

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DaSpider

function u(t) {

b=(T=t|0)%3?'':'Fizz'
throw T%5?b||T:b+'Buzz'

Mar 16 2024 5:33 AM UTC

}// 45/140

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Golfing for #FizzBuzz record

u/Odog8

Nice
u/Xen

bang on!

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DaSpider

function u(t) {

document.write((t?'':'<pre style="text-align:center;">')+[T=t&&++T,a='Fizz',b='Buzz',a+b][!(T%3)|!(T%5)*2]+' '+(T%15==0?'\n':''))

Mar 12 2024 3:54 PM UTC

}// 129/140

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#FizzBuzz

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