11.6.1 Top new questions this week

11.6.1.1 How to Optimize a TikZ Animation of Quicksort?
11.6.1.2 \NewDocumentCommand, \NewExpandableDocumentCommand versus \cs_new_protected:Npn, \cs_new:Npn, and \cs_new_eq:NN
11.6.1.3 In LaTeX3, how to iterate on all tokens, including spaces?
11.6.1.4 TeX macro expansion incorrect when nested
11.6.1.5 Left-aligning section numbers in the margin
11.6.1.6 How to make sphere in TikZ
11.6.1.7 How may two title lines be aligned?
11.6.1.1 How to Optimize a TikZ Animation of Quicksort?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=735598

While revisiting some old notes on algorithms, I came across a code snippet illustrating the sorting of a vector using quicksort. 
Ia^\200\231m dissatisfied with how the nodes are defined relative to each other,... 
[tikz-pgf] [tikz-positioning]
 
asked by Emanuele Nardi https://tex.stackexchange.com/landing/r/digest?cta=user&id=127473 Score of 16
answered by Qrrbrbirlbel https://tex.stackexchange.com/landing/r/digest?cta=user&id=16595 Score of 20
11.6.1.2 \NewDocumentCommand, \NewExpandableDocumentCommand versus \cs_new_protected:Npn, \cs_new:Npn, and \cs_new_eq:NN

https://tex.stackexchange.com/landing/r/digest?cta=question&id=735588

When should expl3 programmers define user-level document commands using \NewDocumentCommand,\NewExpandableDocumntCommand, and friends versus using \cs_new_protected:Npn \cs_new:Npn, or \cs_new_eq:NN? 
... 
[expl3]
 
asked by User23456234 https://tex.stackexchange.com/landing/r/digest?cta=user&id=278534 Score of 7
answered by Joseph Wright https://tex.stackexchange.com/landing/r/digest?cta=user&id=73 Score of 6
11.6.1.3 In LaTeX3, how to iterate on all tokens, including spaces?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=735869

In LaTeX3, token lists collapse spaces. Is there a way to avoid that and call a function on all tokens, without collapsing spaces. For example, I would like the following function to display the ... 
[expl3] [latex3] [programming] [white-space] [token]
 
asked by Vincent https://tex.stackexchange.com/landing/r/digest?cta=user&id=17200 Score of 6
answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 Score of 9
11.6.1.4 TeX macro expansion incorrect when nested

https://tex.stackexchange.com/landing/r/digest?cta=question&id=735839

I am trying to create my own 2-pass table of contents implementation like LaTeX but I am using just plain TeX (technically LuaTeX). Though I am having some problems with the intermediate macros I am ... 
[luatex] [expansion] [plain-tex]
 
asked by nick2225 https://tex.stackexchange.com/landing/r/digest?cta=user&id=306548 Score of 6
answered by Max Chernoff https://tex.stackexchange.com/landing/r/digest?cta=user&id=270600 Score of 10
11.6.1.5 Left-aligning section numbers in the margin

https://tex.stackexchange.com/landing/r/digest?cta=question&id=735572

In the example underneath all the numbering of section, subsection and subsubsection is in the margin, but I'd like the numbering to be aligned on the left (like a virtual vertical line, as shown with ... 
[horizontal-alignment] [sectioning] [numbering]
 
asked by MrI2C https://tex.stackexchange.com/landing/r/digest?cta=user&id=189283 Score of 6
answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 Score of 6
11.6.1.6 How to make sphere in TikZ

https://tex.stackexchange.com/landing/r/digest?cta=question&id=735927

I'm learning to make 3D figures like cone, triangle, sphere etc in TikZ and hopefully I managed to make nicely looking cones and triangels but the problem is with Sphere. 
This how I currently managed ... 
[tikz-pgf] [tikz-3dplot]
 
asked by Mr.Price https://tex.stackexchange.com/landing/r/digest?cta=user&id=219578 Score of 5
answered by Jasper Habicht https://tex.stackexchange.com/landing/r/digest?cta=user&id=47927 Score of 8
11.6.1.7 How may two title lines be aligned?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=735901

Consider the MWE 
\documentclass{article} 
\title{A line written firstly\\ 
succeeded by another} 
\date{} 
\begin{document} 
\maketitle 
\end{document} 
The first ... 
[horizontal-alignment] [titles]
 
asked by Frode Alfson BjA~,rdal https://tex.stackexchange.com/landing/r/digest?cta=user&id=24406 Score of 5
answered by Rmano https://tex.stackexchange.com/landing/r/digest?cta=user&id=38080 Score of 8