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Java: how to convert HashMap to array
...sified, making the performance of the empty array version the same and sometimes even better, compared to the pre-sized version. Also passing pre-sized array is dangerous for a concurrent or synchronized collection as a data race is possible between the size and toArray call which may result in extr...
how to get the one entry from hashmap without iterating
... edited Dec 20 '16 at 15:03
timekeeper
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answered Oct 2 '09 at 13:09
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The modulo operation on negative numbers in Python
...ine. (Although I assume that you have already resolved your concern a long time ago).
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How to remove all the null elements inside a generic list in one go?
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This is a four year old answer. At the time C# 3 was relatively new, and I was still using C# 2 day-to-day. The lambda syntax is now the way to go; however, this is still a working answer, so I've left it here for anyone unable to use the newer syntax (for whateve...
Can a C# lambda expression have more than one statement?
...Habeeb: "Anyway Expression will complied as Func" Not always. A lot of the time it's never compiled to a delegate at all - just examined as data. Expression trees in .NET 4.0 did gain the ability to include multiple statements via Expression.Block but the C# language doesn't support that. It could, ...
How to convert Set to Array?
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@c69 that is true. At the time of this answer, Array.from() did not work as expected. But now spread and Array.from() both work just fine.
– Roland
Oct 23 '18 at 9:50
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C++ cout hex values?
...unset, every bit in ios::basefield is unset. How it num printed the second time? evidence that the bits are all unset: ideone.com/fYXyh6. This is permitted for ios::floatfield according to Thinking in C++ vol 2 page 189, but it doesn't say the same about ios::basefield.
– Joel ...
How Do I Use Factory Girl To Generate A Paperclip Attachment?
...Carrierwave, the previous solution from this question didn't work out this time.
FIRST APPROACH:
For me adding an after :create solved the problem for me like this:
after :create do |b|
b.update_column(:video_file, File.join(Rails.root, 'spec', 'fixtures', 'sample.mp4'))
end
Setting inline v...
Removing duplicate rows from table in Oracle
...ed the DELETE to SELECT and this found them in seconds. Saved me a ton of time, thank you.
– shimonyk
Sep 23 '10 at 15:30
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Is there a C# case insensitive equals operator?
...h approaches and the ordinal ignore case string comparison was more than 9 times faster! It is also more reliable than converting strings to lower or upper case (check out the Turkish i problem). So always use the String.Equals method to compare strings for equality:
String.Equals(string1, string2,...