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Pat's Pretty Pointless Python Program Produces Palindromic Primes....
And here is a version of the source code which generated the image
(with underscores representing the original's indentation):
[
def isPrime(i):
__ if 0 == i % 2: return 2 == i # ..... Evens are non-prime, except '2'
__ if 1 == i: return False # ............ Technically, 1 is not prime
__ for div in xrange(3, int( i**0.5 ) + 1, 2): # ... Check odd divisors up to my sqrt, inc.
____ if 0 == i % div: return False
__ return True
def palindromeEven(s): # ..... Mirror the full input => even-length output
__ return s + s[::-1] # ............ [::-1] means 'scan backwards, in steps of 1'
def palindromeOdd(s): # ...... Mirror the input, except its final character => odd-length output
__ return s + s[:-1][::-1] # ...... [:-1] means 'trim off the final character
def retGenPalints(): # .......... Return a generator of palindromic integers.
__ lo = 1 # ........................... Note: 'yield' returns each element of a re-entrant sequence
__ while True:
____ hi = lo * 10
____ for i in xrange(lo, hi): yield int( palindromeOdd( str(i) )) # ....... odd length
____ for i in xrange(lo, hi): yield int( palindromeEven( str(i) )) # ...... even length
____ lo = hi
def retGenPrimePalints(): # ........... Return a generator of prime palindromic integers.
__ return (n for n in retGenPalints() if isPrime(n)) # .. This is a 'generator expression'
def somePrimePalints(some): # ..... Return a list of 'some' prime palindromic integers.
__ genPrimePalints = retGenPrimePalints()
__ return list( genPrimePalints.next() for i in xrange(some) )
]
BTW: This approach is reasonably efficient, but certainly not optimal. I have another version, which runs faster, but is harder to understand.
Fashion items on the website.
He was once a senior computer programmer, but today he heads an online fashion platform that has 100 million registered female users.
Meilishuo CEO Xu Yirong, believes that technology is the driving force in the modern fashion industry. Beijing, China, 12/02/2015
Frances Elizabeth Holberton (1917 – 2001) was one of the six original programmers of the computer, ENIAC. The other five ENIAC programmers were Jean Bartik, Ruth Teitelbaum, Kathleen Antonelli, Marlyn Meltzer, and Frances Spence.
Holberton invented breakpoints in computer debugging. In software development, a breakpoint is an intentional stopping or pausing place in a program, put in place for debugging purposes. It is also sometimes simply referred to as a pause.
More generally, a breakpoint is a means of acquiring knowledge about a program during its execution. During the interruption, the programmer inspects the test environment (general purpose registers, memory, logs, files, etc.) to find out whether the program is functioning as expected. In practice, a breakpoint consists of one or more conditions that determine when a program's execution should be interrupted. en.wikipedia.org/wiki/Betty_Holberton
Public domain image of the ENIAC by the US Army via Wikimedia Commons w.wiki/3Kpo
An incredible programmer and observant historian, Lucy kept the crew alive on so many occasions usually by hacking into security systems or by piloting her drone SAL-E. Due to her unrelenting research, she identified the role of the Soul Empirium long before we found its remnants.
Using an Arduino compatible as an ICSP programmer to program an Atmel ATtiny84.
The version of the ArduinoISP sketch included in the examples directory with the Arduino IDE seems to be broken, I used this one instead although I also had to apply the fix mentioned here.
For some tips on programming the ATtiny84 see my blog here.
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I’m one of the software architects (and popcorn poppers) within the Professional Services Group of CSG Systems Inc., a provider of software and services for the Customer Care and Billing industry. Our collection of software products spans technologies (mainframe to Unix to Windows) as well as industry verticals (Broadband and Satellite Video, Telephony, Finance, Public Utilities). Our Professional Services team helps our clients with configuration and optimization of our software, with custom interfaces and product extensions, custom solutions outside our core product focus, and anything else that can help our clients maintain profitable relationships with their customers.