alexwlchan

Cambridge, United Kingdom

https://alexwlchan.net

Dormant user.

I used to write a lot of answers on SFF.SE in the harry-potter tag, but I don’t write much new content these days.

top accounts reputation activity subscriptions

Can I limit concurrent invocations of an AWS Lambda?

amazon-web-services locking aws-lambda asked Feb 3, 2017 at 16:36

stackoverflow.com

68 votes

Why is a double semicolon a SyntaxError in Python?

python syntax-error language-lawyer asked Mar 20, 2016 at 9:07

stackoverflow.com

67 votes

Is there a left-handed equivalent of \implies?

amsmath arrows asked Oct 31, 2012 at 12:30

tex.stackexchange.com

38 votes

Why does John Bercow say “unlock” after reading out the results of a vote?

united-kingdom parliament procedure house-of-commons asked Mar 26, 2019 at 7:36

politics.stackexchange.com

31 votes

Phrase for a problem that resolves itself shortly after giving up

phrase-requests asked Aug 30, 2016 at 21:30

english.stackexchange.com

24 votes

Pluralization bug: "1 answers" in the Hot Questions list

bug stackexchange.com hot-questions plurals asked May 5, 2015 at 10:42

meta.stackexchange.com

20 votes

Why did the Maximoff twins go to the church?

marvel-cinematic-universe marvel age-of-ultron asked May 18, 2015 at 18:31

scifi.stackexchange.com

11 votes

Whose signature is shown in the Spectre teaser?

james-bond spectre asked Mar 28, 2015 at 12:53

movies.stackexchange.com

10 votes

Is there a way to show the version of a document as seen by a colour blind reader?

tikz-pgf color accessibility asked Jul 5, 2013 at 14:25

tex.stackexchange.com

9 votes

Bug in HTML entities for badge notifications

bug status-completed badges notifications asked Oct 14, 2014 at 6:30

meta.stackexchange.com

Top Answers

250

Why was Hermione not in Ravenclaw?

scifi.stackexchange.com

167

Why didn't Molly Weasley remember the platform number?

scifi.stackexchange.com

153

How can 64 = 65?

puzzling.stackexchange.com

120

Why did Dumbledore say that Dudley had been mistreated by the Dursleys?

scifi.stackexchange.com

107

What does a Ravenclaw do when they can't answer the riddle for their dormitory?

scifi.stackexchange.com

100

In Iron Man 3, which suit shows up outside the cafe where Tony and Rhodes are?

scifi.stackexchange.com

Why didn't Snape keep or secure his copy of Advanced Potion-Making?

scifi.stackexchange.com

Getting the absolute path from a PathBuf

stackoverflow.com

Best practices to design a 404 error page

ux.stackexchange.com

Why do the ellipses in the Star Wars opening crawl have four dots?

scifi.stackexchange.com

Where did the Wizarding World think Harry was?

scifi.stackexchange.com

Is space allowed between #! and /bin/bash in shebang?

unix.stackexchange.com

Had JK Rowling seen King's Cross Station before writing the first book?

scifi.stackexchange.com

Why didn't Bellatrix use Legilimency on Hermione?

scifi.stackexchange.com

Why did the Beatles' proposal to make a Lord of the Rings movie fall through?

scifi.stackexchange.com

Why does Molly Weasley remember a different gamekeeper?

scifi.stackexchange.com

What was Sirius' way of tackling dragons?

scifi.stackexchange.com

Drawing multicolumn table in latex

tex.stackexchange.com

Why did Voldemort hide two Horcruxes in Hogwarts?

scifi.stackexchange.com

What exactly is worse than death?

scifi.stackexchange.com

If Hermione had died on the hunt for the horcruxes, would her parents remember her?

scifi.stackexchange.com

Why did Snape leave Gryffindor's sword in an icy lake?

scifi.stackexchange.com

Who/what is the dying infant-like creature in the limbo King's Cross, around the end of Deathly Hallows?

scifi.stackexchange.com

Why didn’t Harry use “Avada Kedavra” in the final duel?

scifi.stackexchange.com

What are these spaceship silhouettes?

scifi.stackexchange.com

How could Harry have become an Auror?

scifi.stackexchange.com

Did George Lucas ever meet Gene Roddenberry?

scifi.stackexchange.com

Did Bellatrix Lestrange have any affection towards Voldemort?

scifi.stackexchange.com

Why didn't Hermione pack canned food in her beaded bag when they were on the run?

scifi.stackexchange.com

Do in-universe characters look down on Hufflepuff?

scifi.stackexchange.com