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Rails “validates_uniqueness_of” Case Sensitivity
...t for the new record and fail with a ugly server exception that comes back from the SQL adapter. If you do not have a database constraint, the insert will succeed and you now have two rows with 'foo' as the name.
See also "Concurrency and integrity" in the validates_uniqueness_of Rails documentat...
Java: getMinutes and getHours
...util.Date).
You can use the traditional classes like this to fetch fields from given Date instance.
Date date = new Date(); // given date
Calendar calendar = GregorianCalendar.getInstance(); // creates a new calendar instance
calendar.setTime(date); // assigns calendar to given date
calendar....
Should I return a Collection or a Stream?
...likely to use the answer.
First, note that you can always get a Collection from a Stream, and vice versa:
// If API returns Collection, convert with stream()
getFoo().stream()...
// If API returns Stream, use collect()
Collection<T> c = getFooStream().collect(toList());
So the question is, w...
Google Maps: how to get country, state/province/region, city given a lat/long value?
...wser does not support geolocation.
His way: fetched results are different from using
http://maps.googleapis.com/maps/api/geocode/json?address=bucharest&sensor=false
than from using
http://maps.googleapis.com/maps/api/geocode/json?latlng=44.42514,26.10540&sensor=false
(searching by name / se...
.net implementation of bcrypt
...
I needed a BCrypt implementation when moving something from PostgreSQL (which has pg_crypto) to SQLite (which doesn't), so I wrote my own. Seeing from this message I'm not the only one needing this, I've decided to slap a license on it and release it. The URL is:
http://zer7.com...
How to convert char to int?
...'0' which is then the 'base value'
subtracting your number in char format from this will give you the original number.
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Best way to parse command-line parameters? [closed]
...tsbruce I just want to add to/modify your point--it would be most "proper" from a readability/maintainability to define listToOptionMap(lst:List[String]) with the function nextOption defined within that, with a final line saying return nextOption(Map(), lst). That said, I have to confess that I've ...
Why can't I center with margin: 0 auto?
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An inline-block covers the whole line (from left to right), so a margin left and/or right won't work here. What you need is a block, a block has borders on the left and the right so can be influenced by margins.
This is how it works for me:
#content {
display: b...
git branch -d gives warning
...if it was a fast-forward, this will generate a new SHA for each new commit from origin/old_branch, causing git to see the original SHA's in your local old_branch as unmerged after pulling the changes to your local master branch. You can see this answer and this answer for why this occurs.
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How to use GNU Make on Windows?
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You pretty much should stay away from making msys or mingw a part of your environment variables for bloat reasons, but also because msys directory is local to itself. The path in msys will allow you to use make if its in mingw64's bin, however not speaking o...