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.dsy:it. : Powered by vBulletin version 2.3.1 .dsy:it. > Didattica > Corsi N - Z > Programmazione avanzata > esercizi
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Vikyg13
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Qualcuno ha capito come fare l'esercizio 2 del laboratorio 6 (decoratori) ?
Il metodo fibo() deve restituire praticamente la classica successione? l'avete implementata con un iteratore?
26-02-2011 17:30
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tooler
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penso che fibo debba essere ricorsiva, così la memoizzazione ha sicuramente più senso..:

code:


def memo(f):
	'''input memoization without keyworded argument'''
	f.cache = dict()
	def decorator(*a, **k):
		t = a #, frozenset(k)
		if (t) not in f.cache:
			f.cache[ t ] = f(*a, **k)
		#else: print('cached')
		return f.cache[ t ]
	return decorator

@memo
def fib(n):
	if n==0: return 1
	if n==1: return 1

	return fib(n-1)+fib(n-2)

for i in range(10): print(fib(i))

26-02-2011 19:07
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Vikyg13
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Ma Fib, Fact e Taylor le hai messi tutti in una classe MyMath?
27-02-2011 10:37
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tooler
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no in realtà le ho scritte solo come funzioni.. un po' come avviene nel modulo builtin math.. scrivi: from math import sqrt
non so se è così che intendeva il prof ma se lo dovessi fare in java userei dei metodi statici quindi..
27-02-2011 11:48
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Vikyg13
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grazie!
E la serie di Taylor come l'hai sviluppata invece?
27-02-2011 16:28
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Vikyg13
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così come per il logging come avrei due domande:

1) Quando scrivo nel file viene sovrascritto l'intero testo piuttosto che aggiungerlo
2) come si fa a scrivere nel file anche gli argomenti delle varie ricorsioni?
27-02-2011 16:57
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Vikyg13
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Risolto il logging.

Per quanto riguarda invece il decoratore stack_trace?
28-02-2011 10:20
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Vikyg13
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Qualcuno saprebbe spiegare l'esercizio sul triangolo di pascal?
02-03-2011 10:50
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KIMMY
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Avete poi fatto l'esame? com'è stato?
13-03-2011 10:58
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prexioso
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Qualcuno sa quando usciranno i voti???
01-04-2011 12:51
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Vikyg13
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boh...
01-04-2011 14:07
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Vikyg13
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Sono usciti i risultati...

Stavolta gli esiti sono stati più positivi del solito, l'esame in fondo era più facile delle altre volte soprattutto (forse) nella distribuzione dei punteggi fra i vari esercizi.

Qualcuno sa solitamente quando e dove verbalizza il prof?
06-04-2011 15:05
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Vikyg13
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PS: ma cosa significano le linguette rosse che ci sono sopra alcuni voti?
06-04-2011 15:05
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Batti
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"La verbalizzazione dell'appello del 9 marzo è fissata per lunedì 11 alle ore 12 nel mio ufficio (p121)."

mi chiedo anche io cosa siano i triangolini rossi...
07-04-2011 12:43
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kray
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di solito in excel i triangolini rossi indicano che nella cella è presente un commento... il prof avrà annotato qualcosa, suppongo.. ciau
07-04-2011 13:22
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