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Datetime - Get next tuesday
... up with a value in the range [0, 6]
int daysUntilTuesday = ((int) DayOfWeek.Tuesday - (int) today.DayOfWeek + 7) % 7;
DateTime nextTuesday = today.AddDays(daysUntilTuesday);
If you want to give "a week's time" if it's already Tuesday, you can use:
// This finds the next Monday (or today if it's ...
Detect a finger swipe through JavaScript on the iPhone and Android
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givansegivanse
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Determine if ActiveRecord Object is New
How can I check if an ActiveRecord object is new or is already persisted?
2 Answers
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Counting null and non-null values in a single query
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This works for Oracle and SQL Server (you might be able to get it to work on another RDBMS):
select sum(case when a is null then 1 else 0 end) count_nulls
, count(a) count_not_nulls
from us;
Or:
select count(*) - count(a)...
time.sleep — sleeps thread or process?
In Python for *nix, does time.sleep() block the thread or the process?
7 Answers
7
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Is \d not supported by grep's basic expressions?
...OSIX regex, and \d is pcre. You can either pass -P to gnu grep, for perl-like regexps, or use [[:digit:]] instead of \d.
daenyth@Bragi ~ $ echo 1 | grep -P '\d'
1
daenyth@Bragi ~ $ echo 1 | grep '[[:digit:]]'
1
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convert a JavaScript string variable to decimal/money
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lonesomedaylonesomeday
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insert vs emplace vs operator[] in c++ map
...ment. You can use emplace() , operator[] or insert() , plus variants like using value_type or make_pair . While there is a lot of information about all of them and questions about particular cases, I still can't understand the big picture.
So, my two questions are:
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Intelligent way of removing items from a List while enumerating in C#
...houldRemoveCondition)
{
myList.RemoveAt(i);
}
}
Going backwards ensures that you don't skip any elements.
Response to Edit:
If you're going to have seemingly arbitrary elements removed, the easiest method might be to just keep track of the elements you want to remove, and then re...
Creating my own Iterators
I'm trying to learn C++ so forgive me if this question demonstrates a lack of basic knowledge, you see, the fact is, I have a lack of basic knowledge.
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