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What is cardinality in MySQL?
...s per the Wikipedia article linked to by Kami.
Why it is important to consider is that it affects indexing strategy. There will be little point indexing a low cardinality column with only 2 possible values as the index will not be selective enough to be used.
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What port is a given program using? [closed]
...make it quite slow.
Edit: If you need more functionality than netstat provides, vasac suggests that you try TCPView.
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ant warning: “'includeantruntime' was not set”
...;
If you have to use the javac-task multiple times you might want to consider using PreSetDef to define your own javac-task that always sets includeantruntime="false".
Additional Details
From http://www.coderanch.com/t/503097/tools/warning-includeantruntime-was-not-set:
That's caused by a mi...
Change a Django form field to a hidden field
...alue.
also you may prefer to use in the view:
form.fields['field_name'].widget = forms.HiddenInput()
but I'm not sure it will protect save method on post.
Hope it helps.
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MSSQL Error 'The underlying provider failed on Open'
...and found a few solutions:
Looking at your connection string, it looks valid. I found this blog post, the problem here is that they were using Integrated Security. If you are running on IIS, your IIS user needs access to the database.
If you are using Entity Framework with Transactions, Entity F...
.htaccess rewrite to redirect root URL to subdirectory
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Just recently I spent a lot of time debugging why this didn't work on a site in Ubuntu Apache 2.4.7. Rewrite debugging showed the rule being hit and generating an INTERNAL REDIRECT. Then it seemed to just park that and look for an index page. Turns out that if mod_dir is enabled A...
How can I perform a `git pull` without re-entering my SSH password?
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bit nervous answering someone with a 17.7k reputation; did I misinterpret the question... ;-)
– Fredrik Pihl
Jun 7 '11 at 13:21
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Good way of getting the user's location in Android
... well so far.
/**
* try to get the 'best' location selected from all providers
*/
private Location getBestLocation() {
Location gpslocation = getLocationByProvider(LocationManager.GPS_PROVIDER);
Location networkLocation =
getLocationByProvider(LocationManager.NETWORK_PROVIDER)...
Appending to an object
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This answer expects you to know the id of the alert to be added. Well, if you already know that, then you can simply follow the original object format and do: alerts[3] = { app: 'hello3', message: 'message 3' }. With this you can access a message by id: alerts[...
Reading HTML content from a UIWebView
...g loaded twice, which may have a performance impact. Is there a way to avoid that?
– Fuzzy Purple Monkey
Jun 14 '09 at 9:56
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