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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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Java Mouse Event Right Click
On my three button mouse MouseEvent.BUTTON2 = Middle Click and MouseEvent.BUTTON3 = Right Click.
3 Answers
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Where are Docker images stored on the host machine?
...er specific storage for contents of the images.
/var/lib/docker/graph/<id> now only contains metadata about the image, in the json and layersize files.
In the case of aufs:
/var/lib/docker/aufs/diff/<id> has the file contents of the images.
/var/lib/docker/repositories-aufs is a JSO...
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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Automatically update version number
...uary 1st, 2000, and sets the revision part to the number of seconds since midnight, local time, divided by two. See this MSDN article.
Assembly version is located in an assemblyinfo.vb or assemblyinfo.cs file. From the file:
' Version information for an assembly consists of the following four val...
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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Maven and adding JARs to system scope
I have a JAR in my Android project and I want it to be added to final APK.
Okay, here I go:
8 Answers
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Handle ModelState Validation in ASP.NET Web API
I was wondering how I can achieve model validation with ASP.NET Web API. I have my model like so:
10 Answers
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Unable to understand useCapture parameter in addEventListener
..., DOM3 events: "the implementation must determine the current target's candidate event listeners. This must be the list of all event listeners that have been registered on the current target in their order of registration."
– Rob W
Sep 12 '14 at 20:47
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.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...