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How does interfaces with construct signatures work?
...how defining constructors in interfaces work. I might be totally misunderstanding something. But I have searched for answers for a good while and I can not find anything related to this.
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Git: How to remove file from historical commit?
... size of the repo won't decrease immediately unless you expire the reflogs and garbage collect:
rm -Rf .git/refs/original # careful
git gc --aggressive --prune=now # danger
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How do you 'redo' changes after 'undo' with Emacs?
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Short version: by undoing the undo. If you undo, and then do a non-editing command such as C-f, then the next undo will undo the undo, resulting in a redo.
Longer version:
You can think of undo as operating on a stack of operations. If you perform some command (even a nav...
Don't display pushd/popd stack across several bash scripts (quiet pushd/popd)
Each time I use pushd or popd, it print the stack to standard output. How not to do so?
3 Answers
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How to schedule a periodic task in Java?
... great way to do it, because the TimeUnit applies to both the initialDelay and the period. Running every 24 hours will end up being thrown off when DST kicks in, but a TimeUnit of DAYS doesn't let you specify a fine-grained initialDelay. (I think the internal ScheduledExecutorService implementation ...
How can you undo the last git add?
...valid ref. I haven't committed anything yet (new repo) just done git add . and regretted it. I don't want to reset the entire add, just one directory. git reset -- dir/*.* generates the error above.
– Francis Davey
Jan 23 '14 at 17:51
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How to redirect 404 errors to a page in ExpressJS?
...inuing
// on, at which point we assume it's a 404 because
// no route has handled the request.
app.use(app.router);
// Since this is the last non-error-handling
// middleware use()d, we assume 404, as nothing else
// responded.
// $ curl http://localhost:3000/notfound
// $ curl http://localhost:3...
Pandas count(distinct) equivalent
I am using pandas as a db substitute as I have multiple databases (oracle, mssql, etc) and I am unable to make a sequence of commands to a SQL equivalent.
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@ character before a function call
... In some cases, I do see the error being reported by the configured error handler and in other cases it does seem to get reported.
– fritzmg
Mar 6 '16 at 10:40
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Javascript checkbox onChange
I have a checkbox in a form and I'd like it to work according to following scenario:
10 Answers
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