Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.
$ python -m SimpleHTTPServer 8000
Latency Comparison Numbers (~2012) | |
---------------------------------- | |
L1 cache reference 0.5 ns | |
Branch mispredict 5 ns | |
L2 cache reference 7 ns 14x L1 cache | |
Mutex lock/unlock 25 ns | |
Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
Compress 1K bytes with Zippy 3,000 ns 3 us | |
Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |
# SSL self signed localhost for rails start to finish, no red warnings. | |
# 1) Create your private key (any password will do, we remove it below) | |
$ openssl genrsa -des3 -out server.orig.key 2048 | |
# 2) Remove the password | |
$ openssl rsa -in server.orig.key -out server.key |
#!/usr/bin/env sh | |
# Download lists, unpack and filter, write to stdout | |
curl -s https://www.iblocklist.com/lists.php \ | |
| sed -n "s/.*value='\(http:.*=bt_.*\)'.*/\1/p" \ | |
| xargs wget -O - \ | |
| gunzip \ | |
| egrep -v '^#' |
Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.
$ python -m SimpleHTTPServer 8000
All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.
Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.
elem.offsetLeft
, elem.offsetTop
, elem.offsetWidth
, elem.offsetHeight
, elem.offsetParent
rebase
vs merge
).rebase
vs merge
)reset
vs checkout
vs revert
)git rev-parse
)pull
vs fetch
)stash
vs branch
)reset
vs checkout
vs revert
)/* Using a JavaScript proxy for a super low code REST client */ | |
// via https://dev.to/dipsaus9/javascript-lets-create-aproxy-19hg | |
// also see https://towardsdatascience.com/why-to-use-javascript-proxy-5cdc69d943e3 | |
// also see https://github.com/fastify/manifetch | |
// also see https://github.com/flash-oss/allserver | |
// and https://gist.github.com/v1vendi/75d5e5dad7a2d1ef3fcb48234e4528cb | |
const createApi = (url) => { | |
return new Proxy({}, { | |
get(target, key) { |