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Best practices for overriding isEqual: and hash
...ur hash should return a random distribution of values for its input. This means that, for example, if you have a double, but the majority of your values tend to cluster between 0 and 100, you need to make sure that the hashes returned by those values are evenly distributed across the entire range o...
“Server” vs “Data Source” in connection string
...t got a lot of Atlassian stuff (and that one I know). But what is the word meaning? I tried "translate: confluence" but got nada...
– Konrad Viltersten
Jun 23 '19 at 19:57
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In SQL, how can you “group by” in ranges?
...n s.Score between r.LowerLimit and r.UpperLimit
group by Range
This does mean setting up a table, but it would be easy to maintain when the desired ranges change. No code changes necessary!
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Django - limiting query results
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Django querysets are lazy. That means a query will hit the database only when you specifically ask for the result.
So until you print or actually use the result of a query you can filter further with no database access.
As you can see below your code onl...
What is the difference between Gemfile and Gemfile.lock in Ruby on Rails
...versions we see that the current stable version has changed to 1.4.9. That means if we try to build, bundler will install version 1.4.9 of nokogiri (suppose we don't have Gemfile.lock).
What does it mean ?
As you see if you don't have any Gemfile.lock and run:
bundle install
then the currently used...
MySQL error: key specification without a key length
...ecause data they contain can be huge, and implicitly DB index will be big, meaning no benefit from index.
MySQL requires that you define first N characters to be indexed, and the trick is to choose a number N that’s long enough to give good selectivity, but short enough to save space. The prefix ...
Recommendations of Python REST (web services) framework? [closed]
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I meant that, by default, Django treats POST and GET as if they were the same thing, which is very inconvenient when you are doing RESTful services as it forces you to do: if request.method == 'GET': do_something()...
How to swap two variables in JavaScript
...you don't mind an integer result; the values are auto-cast to int32s. This means it can work with numeric strings, Booleans (0/1), null (0), and empty arrays/objects (0). Though the original type isn't preserved, so affected Booleans wouldn't work with typeof a == 'boolean' or a === false, for examp...
Do git tags get pushed as well?
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I'm pretty sure that means that the HEAD refs won't get pushed, meaning that you ONLY push the tags.
– Dan Rosenstark
Oct 7 '12 at 21:01
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What's the difference between the atomic and nonatomic attributes?
What do atomic and nonatomic mean in property declarations?
26 Answers
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