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Using the “final” modifier whenever applicable in Java [closed]
...the code more difficult to understand with finals all over. If I'm in someone else's code, I'm not going to pull them out but if I'm writing new code I won't put them in. One exception is the case where you have to mark something final so you can access it from within an anonymous inner class.
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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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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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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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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...
How to get duplicate items from a list using LINQ? [duplicate]
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Here is one way to do it:
List<String> duplicates = lst.GroupBy(x => x)
.Where(g => g.Count() > 1)
.Select(g => g.Key)
.ToList(...
Jackson with JSON: Unrecognized field, not marked as ignorable
... I'm serializing classes that I do not own (cannot modify). In one view, I'd like to serialize with a certain set of fields. In another view, I want a different set of fields serialized (or perhaps rename the properties in the JSON).
– Jon Lorusso
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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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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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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...