Git tips Oh, but there are 2 trees: local and remote by
Ciro Santilli 37 Updated 2025-07-01 +Created 1970-01-01
Oh but there are usually 2 trees: local and remote.
So you also have to learn how to observe and modify and sync with the remote tree!
But basically:to update the remote tree. And then you can use it exactly like any other branch, except you prefix them with the remote (usually
git fetch
origin/*
), e.g.:origin/master
is the latest fetch of the remote version ofmaster
origin/my-feature
is the latest fetch of the remote version ofmy-feature
Git tips Understand the commit tree by
Ciro Santilli 37 Updated 2025-07-01 +Created 1970-01-01
This is the most important thing to understand Git!
You must:
- be able to visualize the commit tree
- understand how each git command modifies the commit DAG
They actually carry atomic clocks in them.
Official demos: github.com/KhronosGroup/glTF-Sample-Assets These are visible at: github.khronos.org/glTF-Sample-Viewer-Release/ with a JavaScript viewer present at: github.com/KhronosGroup/glTF-Sample-Viewer TODO can you load models on the web?
Supports animations, e.g.:
gltf-viewer.donmccurdy.com/ is based on doesn't work with those examples because they have separate asset files.
f3d just worked for it.
An electroluminescent display (EL display) is a type of flat panel display technology that produces light through the process of electroluminescence. In an electroluminescent material, when an electric current is applied, it emits light as a result of the recombination of electrons and holes in a semiconductor material.
Ferroelectricity is a property of certain materials that exhibit a spontaneous electric polarization that can be reoriented by an external electric field. This means that, unlike ordinary dielectric materials that only polarize in response to an applied electric field, ferroelectric materials can maintain a permanent electric polarization even when the external field is removed.
Based on the fact that we don't have a P algorithm for the discrete logarithm of the cyclic group as of 2020, but we do have an efficient algorithm for modular exponentiation. But nor do we have proof that one does not exist! Living on the edge as usual for public-key cryptography.
This program makes you respect GNU make a bit more. Good old make with
-j
can not only parallelize, but also take in account a dependency graph.Some examples under:
man parallel_exampes
To get the input argument explicitly job number use the magic string sample output:
{}
, e.g.:printf 'a\nb\nc\n' | parallel echo '{}'
a
b
c
To get the job number use sample output:
{#}
as in:printf 'a\nb\nc\n' | parallel echo '{} {#}'
a 1
b 2
c 3
c 3
{%}
contains which thread the job running in, e.g. if we limit it to 2
threads with -j2
:printf 'a\nb\nc\nd\n' | parallel -j2 echo '{} {#} {%}'
a 1 1
b 2 1
c 3 2
d 4 1
%
symbol in many programming languages such as C.To pass multiple CLI arguments per command you can use sample output:
-X
e.g.:printf 'a\nb\nc\nd\n' | parallel -j2 -X echo '{} {#} {%}'
a b 1 1
c d 2 2
Tends to be Ciro Santilli's first attempt for quick and dirty graphing: github.com/cirosantilli/gnuplot-cheat.
When it doesn't, you Google for an hours, and then you give up in frustration, and fall back to Matplotlib.
Couldn't handle exploration of large datasets though: Survey of open source interactive plotting software with a 10 million point scatter plot benchmark by Ciro Santilli
Generate public private key, test encrypt and test decrypt:
# Create your pubkey.
gpg --gen-key
gpg --armor --output pubkey.gpg --export <myemail>
# Encrypt using someone's pubkey.
gpg --import pubkey2.gpg
echo 'hello world' > hello.txt
gpg --output hello.txt.gpg --encrypt --recipient <other-email> hello.txt
# Double check it is not plaintext in the encrypted message.
grep hello hello.txt.gpg
# Decrypt.
gpg --output hello.decrypt.txt --decrypt --recipient <myemail> hello.txt.gpg
diff -u hello.decrypt.txt hello.txt
Pinned article: ourbigbook/introduction-to-the-ourbigbook-project
Welcome to the OurBigBook Project! Our goal is to create the perfect publishing platform for STEM subjects, and get university-level students to write the best free STEM tutorials ever.
Everyone is welcome to create an account and play with the site: ourbigbook.com/go/register. We belive that students themselves can write amazing tutorials, but teachers are welcome too. You can write about anything you want, it doesn't have to be STEM or even educational. Silly test content is very welcome and you won't be penalized in any way. Just keep it legal!
Intro to OurBigBook
. Source. We have two killer features:
- topics: topics group articles by different users with the same title, e.g. here is the topic for the "Fundamental Theorem of Calculus" ourbigbook.com/go/topic/fundamental-theorem-of-calculusArticles of different users are sorted by upvote within each article page. This feature is a bit like:
- a Wikipedia where each user can have their own version of each article
- a Q&A website like Stack Overflow, where multiple people can give their views on a given topic, and the best ones are sorted by upvote. Except you don't need to wait for someone to ask first, and any topic goes, no matter how narrow or broad
This feature makes it possible for readers to find better explanations of any topic created by other writers. And it allows writers to create an explanation in a place that readers might actually find it.Figure 1. Screenshot of the "Derivative" topic page. View it live at: ourbigbook.com/go/topic/derivativeVideo 2. OurBigBook Web topics demo. Source. - local editing: you can store all your personal knowledge base content locally in a plaintext markup format that can be edited locally and published either:This way you can be sure that even if OurBigBook.com were to go down one day (which we have no plans to do as it is quite cheap to host!), your content will still be perfectly readable as a static site.
- to OurBigBook.com to get awesome multi-user features like topics and likes
- as HTML files to a static website, which you can host yourself for free on many external providers like GitHub Pages, and remain in full control
Figure 2. You can publish local OurBigBook lightweight markup files to either OurBigBook.com or as a static website.Figure 3. Visual Studio Code extension installation.Figure 5. . You can also edit articles on the Web editor without installing anything locally. Video 3. Edit locally and publish demo. Source. This shows editing OurBigBook Markup and publishing it using the Visual Studio Code extension. - Infinitely deep tables of contents:
All our software is open source and hosted at: github.com/ourbigbook/ourbigbook
Further documentation can be found at: docs.ourbigbook.com
Feel free to reach our to us for any help or suggestions: docs.ourbigbook.com/#contact