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How to read integer value from the standard input in Java
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If you are using Java 6, you can use the following oneliner to read an integer from console:
int n = Integer.parseInt(System.console().readLine());
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Regex to match a digit two or four times
...igits, and optionally two more
(?:\d{2}){1,2} <-- two digits, times one or two
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When exactly is it leak safe to use (anonymous) inner classes?
... you are asking is a pretty tough question. While you may think it is just one question, you are actually asking several questions at once. I'll do my best with the knowledge that I have to cover it and, hopefully, some others will join in to cover what I may miss.
Nested Classes: Introduction
As ...
How can I build a small operating system on an old desktop computer? [closed]
... know writing an operating system is unbearably complicated (especially by oneself).
20 Answers
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Django ManyToMany filter()
...many examples of FOO__in=... style filters in the many-to-many and many-to-one tests. Here is syntax for your specific problem:
users_in_1zone = User.objects.filter(zones__id=<id1>)
# same thing but using in
users_in_1zone = User.objects.filter(zones__in=[<id1>])
# filtering on a few...
Insert multiple rows WITHOUT repeating the “INSERT INTO …” part of the statement?
I know I've done this before years ago, but I can't remember the syntax, and I can't find it anywhere due to pulling up tons of help docs and articles about "bulk imports".
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Test a weekly cron job [closed]
...un the following as root:
run-parts -v /etc/cron.weekly
... or the next one if you receive the "Not a directory: -v" error:
run-parts /etc/cron.weekly -v
Option -v prints the script names before they are run.
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I change the capitalization of a directory and Git doesn't seem to pick up on it
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Or do it in one command: git mv --force somename SomeName (from stackoverflow.com/a/16071375/217866)
– jackocnr
Jul 24 '13 at 10:53
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Convert form data to JavaScript object with jQuery
...a few months old, but since when did do arrays use non-numeric indexes? No one should name an input foo[bar] and hope to treat it as an array. Are you confusing arrays and hashes? Yes, [] is commonly understood to be an accessor but not just for arrays. Also saying it's valid HTML but not in the HTM...
Career day in kindergarten: how to demonstrate programming in 20 minutes? [closed]
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I've done this before.
I laid down a lot of paper towels on a table, and got out a loaf of (cheap) bread, a small tub of butter, a small jar of jelly, and a plastic butter knife.
I said to the kids, "How many of you think compute...