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Given a class, see if instance has method (Ruby)
...don't know why everyone is suggesting you should be using instance_methods and include? when method_defined? does the job.
class Test
def hello; end
end
Test.method_defined? :hello #=> true
NOTE
In case you are coming to Ruby from another OO language OR you think that method_defined means ...
Error: Can't set headers after they are sent to the client
I'm fairly new to Node.js and I am having some issues.
32 Answers
32
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Git and nasty “error: cannot lock existing info/refs fatal”
...from remote git repository (at bettercodes)
I made some changes, commited
and tried to push:
23 Answers
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How are echo and print different in PHP? [duplicate]
Is there any major and fundamental difference between these two functions in PHP?
5 Answers
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How are POST and GET variables handled in Python?
In PHP you can just use $_POST for POST and $_GET for GET (Query string) variables. What's the equivalent in Python?
6 ...
SQL “between” not inclusive
...:
SELECT *
FROM Cases
WHERE cast(created_at as date) BETWEEN '2013-05-01' AND '2013-05-01'
Another way to fix it is with explicit binary comparisons
SELECT *
FROM Cases
WHERE created_at >= '2013-05-01' AND created_at < '2013-05-02'
Aaron Bertrand has a long blog entry on dates (here), wh...
iPhone viewWillAppear not firing
...
If you use a navigation controller and set its delegate, then the view{Will,Did}{Appear,Disappear} methods are not invoked.
You need to use the navigation controller delegate methods instead:
navigationController:willShowViewController:animated:
navigationCo...
Redirect all output to file [duplicate]
...However, I'm not sure why part of the output is still output to the screen and not written to the file.
10 Answers
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How can I upload files asynchronously?
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With HTML5 you can make file uploads with Ajax and jQuery. Not only that, you can do file validations (name, size, and MIME type) or handle the progress event with the HTML5 progress tag (or a div). Recently I had to make a file uploader, but I didn't want to use Flash no...
Are HTML Image Maps still used?
...s. An alternative would be to position elements using absolute positioning and CSS but that's not necessarily better. It also doesn't allow you to have shapes like in image maps
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