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How to drop columns using Rails migration
...table_name, :column_name, :column_type. Otherwise you'll get the following error when trying to run the migration: remove_column is only reversible if given a type
– Dennis
Mar 26 '14 at 13:35
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Fast permutation -> number -> permutation mapping algorithms
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* There is very limited error checking in this class
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* Especially the int PermGetIndex(int[] iInputArray) method
* if the input integer array contains invalid index, it WILL crash the system
*
* the other is the string of symbol pass in whe...
Rails: How to change the text on the submit button in a Rails Form
...text"
In HAML comma should be there after submit otherwise it will throw error.
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How can I pass data from Flask to JavaScript in a template?
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Try this the next time you get Uncaught SyntaxError: Unexpected token & in the javascript console.
– scharfmn
Jan 5 '15 at 23:49
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Undefined symbols for architecture armv7
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Wow. Apple really needs to reconsider their error messages.
– devios1
Mar 15 '13 at 1:02
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How do I change the UUID of a virtual disk?
...n I try to select the existing hard disk file, a .vhd file, it displays an error saying the virtual hard disk cannot be used because the UUID already exists.
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Cannot change version of project facet Dynamic Web Module to 3.0?
...ing the DWM facet, re-applying the facet, and do project maven update, the error went away.
– Jonathan
Apr 24 '14 at 6:38
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No mapping found for field in order to sort on in ElasticSearch
... without updating any libraries etc. but today I started getting this same error. I now added "ignore_unmapped" : true and it started to work again but strange thing is, what has happened behind the scene! Who knows! Anyway, it works now. +1
– BentCoder
May 19 ...
No empty constructor when create a service
I am struggling with this error:
4 Answers
4
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How to access java-classes in the default-package?
...lexically enclosing type is a member of a named package, or a compile-time error occurs.
Andreas points out in the comments:
"why is [the default package] there in the first place? design error?"
No, it's deliberate.
JLS 7.4.2. Unnamed Packages says: "Unnamed packages are provided by the Java S...