(by @andrestaltz)
If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.
(by @andrestaltz)
If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.
Picking the right architecture = Picking the right battles + Managing trade-offs
FWIW: I (@rondy) am not the creator of the content shared here, which is an excerpt from Edmond Lau's book. I simply copied and pasted it from another location and saved it as a personal note, before it gained popularity on news.ycombinator.com. Unfortunately, I cannot recall the exact origin of the original source, nor was I able to find the author's name, so I am can't provide the appropriate credits.
This gist had a far larger impact than I imagined it would, and apparently people are still finding it, so a quick update:
(async main(){...}())
as a substitute for TLA. This completely eliminates the blocking problem (yay!) but it's less powerful, and harder to statically analyse (boo). In other words the lack of TLA is causing real problemsI'll leave the rest of this document unedited, for archaeological
Transcoding FLAC music to Opus:
ffmpeg is a highly useful application for converting music and videos. However, audio transcoding is limited to a a single core. If you have a large FLAC archive and you wanted to compress it into the efficient Opus codec, it would take forever with the fastest processor to complete, unless you were to take advantage of all cores in your CPU.
parallel 'ffmpeg -v 0 -i "{}" -c:a libopus -b:a 128k "{.}.opus"' ::: $(find -type f -name '*.flac')
Transcoding Videos to VP9:
Sometimes you want to have a subdirectory on the master
branch be the root directory of a repository’s gh-pages
branch. This is useful for things like sites developed with Yeoman, or if you have a Jekyll site contained in the master
branch alongside the rest of your code.
For the sake of this example, let’s pretend the subfolder containing your site is named dist
.
Remove the dist
directory from the project’s .gitignore
file (it’s ignored by default by Yeoman).
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 |
This is a proposal for a lightning talk at the Reactive 2015 conference.
NOTE: If you like this, star ⭐ the Gist - the amount of stars decides whether it makes the cut!
React just got stateless components, meaning that they are in essence pure functions for rendering. Pure functions make it dead simple - even fun - to refactor your views