Reader's digest: The HP Prime heritage on case sensitivity
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08-31-2014, 01:55 PM
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Reader's digest: The HP Prime heritage on case sensitivity
While checking my HP-28S documentation, most from the MoHPC DVD, I also have accessed an interesting document in the net titled as An Aeronautical Engineerings user's manual to the HP-28S handheld calculator. (1991)
And in this document the author mention this interesting observation on the HP-28S case behavior (page 10) , which reminds me of the similar HP-Prime behavior despite on a different context: CASE SENSITIVITY The programs listed herein must be typed into the HP-28S exactly as shown. It is crucial to observe upper and lower case carefully. In the calculator, 'I' and 'x' might have been defined to represent two different values; in fact, one could be a complex number or a string, and the other could be a matrix! Note for example that the statement "sin=5', using all lowercase letters, is perfectly legal, and assigns the value 5 to the variable named 'sin'. The sine trig function is called SIN, with all uppercase letters, and neither this function nor the 'sin' variable is equivalent to another variable named 'Sin'! To further confuse things, all upper and lower case characters are displayed only in upper case on the softkey display. Thus, two variables 'X' and 'x' could both appear simultaneously as 'X' on the display. Jose Mesquita RadioMuseum.org member |
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Messages In This Thread |
Reader's digest: The HP Prime heritage on case sensitivity - jebem - 08-31-2014 01:55 PM
RE: Reader's digest: The HP Prime heritage on case sensitivity - Angus - 09-01-2014, 04:49 AM
RE: Reader's digest: The HP Prime heritage on case sensitivity - jebem - 09-10-2014, 10:25 AM
RE: Reader's digest: The HP Prime heritage on case sensitivity - jebem - 09-10-2014, 02:38 PM
RE: Reader's digest: The HP Prime heritage on case sensitivity - Karl-Ludwig Butte - 09-10-2014, 07:00 AM
RE: Reader's digest: The HP Prime heritage on case sensitivity - Eddie W. Shore - 09-10-2014, 07:37 PM
RE: Reader's digest: The HP Prime heritage on case sensitivity - Angus - 09-10-2014, 11:53 AM
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