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Add a common Legend for combined ggplots
... have looked through a lot of forum posts, but everything I try seem to be commands that are now updated and named something else.
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Database sharding vs partitioning
...for the data. An identifier of this kind is often called a "Shard Key".
A common, key-less logic is to use the alphabet to divide the data. A-D is instance 1, E-G is instance 2 etc. Customer data is well suited for this, but will be somewhat misrepresented in size across instances if the partitioni...
Ignoring time zones altogether in Rails and PostgreSQL
...poch, 2000-01-01 00:00:00 UTC.
Postgres also has built-in knowledge of the commonly used UNIX time counting seconds from the UNIX epoch, 1970-01-01 00:00:00 UTC, and uses that in functions to_timestamp(double precision) or EXTRACT(EPOCH FROM timestamptz).
The source code:
* Timestamps, as well as t...
How to tell if rails is in production?
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Get file size, image width and height before upload
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@SMC caniuse.com/fileapi only recently supports File API. I'll take a look
– Roko C. Buljan
Mar 6 '13 at 21:23
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How can I find WPF controls by name or type?
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I combined the template format used by John Myczek and Tri Q's algorithm above to create a findChild Algorithm that can be used on any parent. Keep in mind that recursively searching a tree downwards could be a lengthy process....
How do I create a directory from within Emacs?
How exactly can I create a new directory using Emacs? What commands do I use? (If possible, please provide an example)
6 An...
What's wrong with overridable method calls in constructors?
...@Override is invoked, the state of the object may be inconsistent and/or incomplete.
A quote from Effective Java 2nd Edition, Item 17: Design and document for inheritance, or else prohibit it:
There are a few more restrictions that a class must obey to allow inheritance. Constructors must not i...
Benefit of using Parcelable instead of serializing object
...erialization in Java is far too slow to satisfy Android’s
interprocess-communication
requirements. So the team built the Parcelable solution. The
Parcelable approach requires
that you explicitly serialize the members of your class, but in the end,
you get a much faster
seri...