August 8, 2012
If you were ever curious about the software driving the Mars rovers, I came across a good question on Programmers today.
The JPL LaRS lab provides a couple of documents on coding standards and monitoring, and NODIS has a document on Software Engineering Requirements. The Workshops on Spacecraft Flight Software also offers a couple of slideshow presentations.
I find this topic very interesting (how would you debug a piece of code that is executing on a different planet?), but unfortunately there are not that many related questions (and answers!) on Programmers.
What about the Soviet space program?
December 9, 2011
When I developed my YuJisho online dictionary web application, I was looking for freely available fonts and dictionary data related to CJK languages.
For my dbscript database schema management application, I tried to find as many database schema samples as possible to test the application against.
There is a lot of data (raw, processed and visualized) available on the Internet, but occasionally it is hard to find. This raised the idea of providing a collection of references to free data sets on the web like the Guardian Data Store, and I was thinking about a platform to provide such links.
Now news is out that data.gov plan to release their platform as open source software (GitHub), but the code is still labeled as alpha. (data.gov HTML says it is based on Socrata, which also provides lots of links to open data).
Let me know what’s your experience with OpenData, or similar platforms.
September 7, 2010
While searching for appropriate string comparison functions in TSQL, I came across these pages implementing a couple of
string functions: Capitalize, Center, Count Substring in String, EndsWith, ExpandTabs, IsAlnum, IsAlpha,
IsDigit, IsLower, IsTitle, IsSpace, LJust, LStrip, RFind, RJust, RStrip, Strip, SwapCase, Title, Zfill
and string tuple functions: Split, SplitLines, Within, EndsWith, StartsWith, Contains, Join, Parts, Partition, RPartition
See here for more TSQL articles by the authors.
December 29, 2009
In a web application with its custom CSS that also defined hyperlinks, Internet Explorer would render disabled hyperlinks greyed-out, whereas Firefox showed them as normal text.
Tracking down this different behavior, I found that you can define CSS styles not only by class and tag, but also by attributes using the [attribute] notation:
*[disabled], a[disabled]:hover, a[disabled]:visited
If you are looking for CSS definitions for fixed headers, footers and sidebars, take a look at these sample CSS. I’m thinking about including them in the next version of dbscript.
December 24, 2009
Recent posts covered collation support and Unicode in SQL Server.
Just a couple of links with more information on this topic:
December 1, 2009
This seems to be a re-occurring topic on Stack Overflow: where can you get free fonts for Unicode characters?
There may be some misunderstandings on Unicode and fonts and Unicode fonts which cause the question, and makes the answer more difficult than you would expect:
From the Unicode website:
The Unicode Standard is a character coding system designed to support the worldwide interchange, processing, and display of the written texts of the diverse languages and technical disciplines of the modern world.
The standard defines 107,361 characters or code points as of version 5.2. Unicode also defines a set of properties for each character, and algorithms such as line breaking.
Fonts that “support Unicode” promise to the operating system or to the application that uses them that they provide an accurate graphical representation (glyph) of the code points they implement. A “Unicode font” typically does not cover each and every Unicode code point, but rather only subsets of the standard (Unicode Blocks).
Typically it is the operating system’s responsibility to find a matching font when displaying Unicode text.
So how can you find a free Unicode font supporting most of the characters? Here’s a list of links:
- Hanazono (52,809 CJK characters, full Ext A, Ext C, partial Ext B)