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When to use reinterpret_cast?
...a d1;
// d1 = &u; // compile error
// d1 = static_cast<VendorGlobalUserData>(&u); // compile error
d1 = reinterpret_cast<VendorGlobalUserData>(&u); // ok
VendorSetUserData(d1);
// do other stuff...
//...
ORA-00979 not a group by expression
...nd it does not appear in GROUP BY clause, which will lead to the ORA-00979 Error .
SELECT employee_id, sum(salary)
FROM employees;
To correct you need to do one of the following :
Include all non-aggregated expressions listed in SELECT clause in the
GROUP BY clause
Remove group (aggregate) ...
Hibernate: “Field 'id' doesn't have a default value”
...ccurately on the database even after an execution of SchemaUpdate.
If the error actually seems to lack a sensible explanation, try recreating the database (or at least creating a new one) and scaffolding it with SchemaExport.
...
Display lines number in Stack Trace for .NET assembly in Release mode
...he need to deploy PDB files with a release build in order to track down an error. The reason is, like you said, was that the exception occurred in a method that was very large and I could not accurately pinpoint where it was happening.
This might be an indication that the method needs to be refact...
Change key pair for ec2 instance
...
answered Oct 24 '11 at 21:05
Eric HammondEric Hammond
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Ubuntu rails install fails on zlib
...ne, but when I try and use gem install or gem update on anything, I get an error that looks like this:
13 Answers
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Which “href” value should I use for JavaScript links, “#” or “javascript:void(0)”?
... the final return false; will not execute if the called function throws an error. Hence the developers have to also remember to handle any error appropriately in the called function.
A third reason is that there are cases where the onclick event property is assigned dynamically. I prefer to be abl...
Using global variables between files?
... Thanks. Any idea how to remove the “Undefined variable from import” errors that appear in Eclipse PyDev by using this file structure (i.e. importing global variables from settings.py)? I had to disable the error in PyDev, which is not ideal.
– Franck Dernoncourt
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When should I use GC.SuppressFinalize()?
...obert Paulson
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1
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Heroku/devise - Missing host to link to! Please provide :host parameter or set default_url_options[:
...erver heroku logs run that from the console and it will tell you the exact error.
When you push to heroku you need to configure the environment.rb file with the heroku subdomain:
config.action_mailer.default_url_options = { :host => 'yourapp.heroku.com' }
Depending upon version, this should...