6.26.1 Top new questions this week

6.26.1.1 Dynamically drag graph vertices
6.26.1.2 Display Number with SI prefixes
6.26.1.3 Understanding the profiler: Is pattern matching/de-structuring expensive?
6.26.1.4 How to select the fastest approach for large numerical data computations?
6.26.1.5 Performance of pure function - Best way to define a function?
6.26.1.6 Font style inconsistency on "number sign" (hashtag) and "at symbol"
6.26.1.7 Solving a Nonlinear Complementary Problem (plasticity)
6.26.1.1 Dynamically drag graph vertices

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=233409

Is it possible to make a dynamic graph with an ability to drag vertices? 
In other words let vertices behave like  Locator s and change its ... 
[graphs-and-networks] [dynamic]
 
asked by swish https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=2490 9 votes
answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 13 votes
6.26.1.2 Display Number with SI prefixes

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=233503

I have a number of  val = 0.000015783  which represents a current value in Amps. 
I want to display it with 3 significant digits and with SI prefixes instead of the ... 
[formatting]
 
asked by tobalt https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=27818 7 votes
answered by creidhne https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=41569 6 votes
6.26.1.3 Understanding the profiler: Is pattern matching/de-structuring expensive?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=233388

I was profiling some code and I am trying to understand what the results mean. Suppose we have the very idiomatic, 
... 
[performance-tuning] [profiling]
 
asked by ITA https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=42145 7 votes
6.26.1.4 How to select the fastest approach for large numerical data computations?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=233677

I really love the flexibility of  Mathematica : there are several ways to perform one task. However, to get the performance of the intense numeric calculation, it can ... 
[list-manipulation] [performance-tuning] [numerics] [pattern-matching] [functional-style]
 
asked by Nam Nguyen https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1712 6 votes
answered by Szabolcs https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=12 7 votes
6.26.1.5 Performance of pure function - Best way to define a function?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=233637

In general, to define a function, we often use  f[x_] . Another way is to use pure function (full form and shorthand). I want to test the performance of these ... 
[functions] [performance-tuning] [functional-style] [pure]
 
asked by Nam Nguyen https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1712 6 votes
6.26.1.6 Font style inconsistency on "number sign" (hashtag) and "at symbol"

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=233665

Why number sign  "#"  (known as hashtag symbol on social media) or at sign  "@"  are not consistent with the ... 
[style] [fonts]
 
asked by azerbajdzan https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=53172 6 votes
answered by creidhne https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=41569 9 votes
6.26.1.7 Solving a Nonlinear Complementary Problem (plasticity)

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=233340

I would like to solve the following: given $t\mapsto\sigma(t)$ and $E>0$, $\sigma_y>0$, find $\epsilon$ such that: 
$$\left\lbrace\begin{array}{l}g(t,\epsilon)\geq 0,\\ \phi(t,\epsilon,\epsilon')\... 
[differential-equations] [physics] [event-detection] [discontinuity]
 
asked by anderstood https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=18767 5 votes
answered by xzczd https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1871 4 votes