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What is causing ERROR: there is no unique constraint matching given keys for referenced table?
Below example table structure gives an ERROR: there is no unique constraint matching given keys for referenced table, and having stared at it for while now I can't figure out why this error arises in this situation.
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How can you list the matches of Vim's search?
I would like to list the matches, when I hit:
12 Answers
12
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Javascript objects: get parent [duplicate]
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No. There is no way of knowing which object it came from.
s and obj.subObj both simply have references to the same object.
You could also do:
var obj = { subObj: {foo: 'hello world'} };
var obj2 = {};
obj2.subObj = obj.subObj;
var s...
Is there an easy way to add a border to the top and bottom of an Android View?
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Create an xml drawable such as /res/drawable/textlines.xml and assign this as a TextView's background property.
<TextView
android:text="My text with lines above and below"
android:background="@drawable/textlines"
/>
/res/drawable/textlines.xml
<?xml version="1.0" encoding="utf-8"?&g...
In MySQL what does “Overhead” mean, what is bad about it, and how to fix it?
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It appears that the overhead is temporary diskspace that the database used to run some of the queries, so you should only worry if this gets really high.
You can compare 'Optimizing the table' with the defragmenting of your hard drive.
I quote:
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How to access command line parameters?
...does not explain how to take parameters from the command line. fn main() is only shown with an empty parameter list in all examples.
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How can I echo a newline in a batch file?
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echo hello & echo.world
This means you could define & echo. as a constant for a newline \n.
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Python error “ImportError: No module named”
Python is installed in a local directory.
28 Answers
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One SVN repository or many?
If you have multiple, unrelated projects, is it a good idea to put them in the same repository?
13 Answers
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Initializing a list to a known number of elements in Python [duplicate]
Right now I am using a list, and was expecting something like:
9 Answers
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