regex skip matches if they contain substring
Regular expression to match a line that doesn't contain a word
How many ways are there to distribute 5 distinguishable balls between 3 kids such that each of them gets at least one ball?   My approach is $ \binom{5}{3} 3! $ + $ \binom{2}{2} \binom{3}{2}2!$ which is equal to $66$? From Geneva airport to Lausanne station When, if ever, should voting override answer acceptance for answer sorting? Do we need a global test before post hoc tests? Including the interaction but not the main effects in a model Is it ever valid to include a two-way interaction in a model without including the main effects?  What if your hypothesis is only about the interaction, do you still need to include the main effects? Flirtatious Primes Here's a possibly interesting prime puzzle. Call a prime $p$ flirtatious if the sum of its digits is also prime. Are there finitely many flirtatious primes, or infinitely many? How to correctly add a path to PATH? Finding $\int^{\infty}_{0}\frac{\ln^2(x)}{(1-x^2)^2} dx$ Theorem numbering Are "pushforward" and "pullback by zero section" of diffrentials isomorphic in elliptic curves? Let S be a scheme, $p:E\rightarrow S$ be an elliptic curve with zero section $e:S\rightarrow E$. My question is: Are $p_*(\Omega_{E/S}^1)$ and $e^*(\Omega_{E/S}^1)$ isomorphic? I think it's right because I saw both definitions in different notes and they seem to represent the same thing. Thank you! Why did Harime Nui's eye not heal? How will old M42 lenses work on a Nikon camera? Non-principal ideal in $K[x,y]$? How were bullets able to dent Captain America's Shield? Just after Captain America's shield was introduced in Captain America: The First Avenger, Peggy Carter shot few bullets at it which created few minor distortions on it.                                  From  page of Marvel.Wikia,     Proto-Adamantium   This is the original Adamantium created by Dr. MacLain. Proto-Adamantium is the official name for the metal that makes up Captain America's Shield. It has never been recreated and is the absolute most invulnerable item in all of existence.    From  page of Marvel.Wikia:     The true shield was once slightly dented by an enraged Odinforce empowered Thor, using Mjolnir, but he later reconciled and pounded out the small dent.    How were few bullets able to dent Captain America's shield then? Markov's paper on insolubility of the homeorphy problem I am looking for an English translation of Markov's 1958 paper, On insolubility of the homeorphy problem, which I remember coming across on a website for a computational topology course (taught by Afra Zomorodian). Word for phrases that are examples of what they describe I mostly use Java and generics are relatively new. I keep reading that Java made the wrong decision or that .NET has better implementations etc. etc.  So, what are the main differences between C++, C#, Java in generics? Pros/cons of each? Input 0  echo foo | xargs -L 1 -I '{}' echo '{}'   Output 0  foo   Input 1  echo foo | xargs -I '{}' -L 1 echo '{}'   Output 1  {} foo   Why changing the order of options of xargs changes the output?  Version: xargs (GNU findutils) 4.6.0 It's said that if  is spared in  quest, he remains in the Dawnstar sanctuary and can be later hired as a follower. Well I did just that and I can't find him anywhere. Where exactly is he? Does he disappear and only reappear after some other moment in the game? How does the Doctor know how old he is? I've often wondered, how does the Doctor know how old he is? He not only travels through time, but also through space, and visits planets where days can be shorter or longer than 24 hours. How does he 'keep score'?  Also, does he count his age in Earth years or Gallifrey years? They might be completely different in length.