Picking Out the Nouns
A reader wrote a letter to me (oh happy day!), and although I’m still
not entirely sure what she’s trying to accomplish, it’s an interesting
puzzle to try to tackle anyway. Here’s what she asked:
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Category: Programming
Days Between Dates: the Counting
In my last article, we began an exploration of date math by validating a given date
specified by the user, then explored how GNU date offers some slick math
capabilities, but has some inherent limitations, the most notable of which is
that it isn’t on 100% of all Linux and UNIX systems.
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Days Between Dates?
Alert readers will know that I’m working on a major revision to my popular
Wicked Cool Shell Scripts book to come out later this
year. Although
most of the scripts in this now ten-year-old book still are current and
valuable, a few definitely are obsolete or have been supplanted
by new technology or utilities. No worries—that’s why I’m doing the
update.
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An Introduction to OpenGL Programming
OpenGL is a well-known standard for generating 3-D as well as 2-D graphics
that is extremely powerful and has many capabilities. OpenGL is defined
and released by the OpenGL Architecture Review Board (ARB).
This article is a gentle introduction to OpenGL that will help you
understand drawing using OpenGL.
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