 music |
 | OSdata.com |
character strings
summary
Representing character strings in a computer.
free computer programming text book projecttable of contents
|
music |
| OSdata.com |
Representing character strings in a computer.
free computer programming text book projecttable of contents
|
This subchapter is a stub section. It will be filled in with instructional material later. For now it serves the purpose of a place holder for the order of instruction.
Professors are invited to give feedback on both the proposed contents and the propsed order of this text book. Send commentary to Milo, PO Box 1361, Tustin, California, 92781, USA.
Representing character strings in a computer.
Almost every programming language has a method for storing and using character strings, but not all have a fundamental string type.
The following material is from the unclassified Computer Programming Manual for the JOVIAL (J73) Language, RADC-TR-81-143, Final Technical Report of June 1981.
Chapter 1 INTRODUCTION, page 2
ITEM MESSAGE C 80; A character-string item, whose value
is a sequence of eighty characters.
This it can accommodate, for example,
the message "WARNING: Cooling system
failure" (with plenty of character
positions left over).
Chapter 1 INTRODUCTION, page 5
In ALGOL 68 the string mode is declared with the reserved word string.
The string type is actually a flexible array of characters (flexible arrays are aarrays that can grow in size).
string InputCharacters;
Python includes the core built-in type basestring. Noninstantiable common basetype of types str and unicode.
To determine if an object x is a string, use the following test:
isinstance(x, basestring)
Coding example: I am making heavily documented and explained open source code for a method to play music for free — almost any song, no subscription fees, no download costs, no advertisements, all completely legal. This is done by building a front-end to YouTube (which checks the copyright permissions for you).
View music player in action: www.musicinpublic.com/.
Create your own copy from the original source code/ (presented for learning programming).
return to table of contents
free downloadable college text book
Because I no longer have the computer and software to make PDFs, the book is available as an HTML file, which you can convert into a PDF.
|
|
| previous page | next page |
| Tweets by @osdata |
free computer programming text book projectBuilding a free downloadable text book on computer programming for university, college, community college, and high school classes in computer programming. If you like the idea of this project, Supporting the entire project: If you have a business or organization that can support the entire cost of this project, please contact Pr Ntr Kmt (my church) free downloadable college text book on computer programming. |
This web site handcrafted on Macintosh 
computers using Tom Bender’s Tex-Edit Plus 
and served using FreeBSD 
.
†UNIX used as a generic term unless specifically used as a trademark (such as in the phrase “UNIX certified”). UNIX is a registered trademark in the United States and other countries, licensed exclusively through X/Open Company Ltd.
Names and logos of various OSs are trademarks of their respective owners.
Copyright © 2010, 2011, 2012 Milo
Created: December 12, 2010
Last Updated: September 20, 2012
return to table of contents
free downloadable college text book
|
|
| previous page | next page |
