From: Georg Maubach <mail2george@gmx-topmail.de>
Subject: Callback in Ada
Date: 27 Nov 2010 09:47:12 GMT
Date: 2010-11-27T09:47:12+00:00 [thread overview]
Message-ID: <8lc2d0Fb6jU1@mid.individual.net> (raw)
Hi All,
today I learnt what a callback function is and also how it is used in
Python. I have tested the following code which runs in Python:
def apply_to (function, valueList):
resultList = []
if __debug__: print "Calling function ", function
for value in valueList:
if __debug__: print "value: ", value
r = function (value)
if __debug__: print "result: ", r
resultList.append(r)
return resultList
def dublicate (value):
return (value * 2)
def power (value):
return (value * value)
valueList = [1, 2, 3, 4, 5]
double_values = apply_to(dublicate, valueList)
power_values = apply_to(power, valueList)
print "Values doubled: ", double_values
print "Values powered: ", power_values
Reference: http://en.wikipedia.org/wiki/Callback_(computer_science)
If put into a file called "callback-test-in-python.py" and called
python -O callback-test-in-python.py it will deliver the output
Values doubled: 2, 4, 6, 8, 10
Values powered: 1, 4, 9, 16, 25
How would I do that in Ada?
Regards
George
next reply other threads:[~2010-11-27 9:47 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-27 9:47 Georg Maubach [this message]
2010-11-27 10:11 ` Callback in Ada Dmitry A. Kazakov
2010-11-27 10:22 ` Ludovic Brenta
2010-11-27 11:04 ` Vinzent Hoefler
2010-11-27 22:05 ` Maciej Sobczak
2010-11-27 10:26 ` Alex Mentis
2010-11-27 10:46 ` Vinzent Hoefler
2010-11-27 11:32 ` Georg Bauhaus
2010-11-27 21:11 ` Jeffrey Carter
2010-11-27 21:20 ` Dmitry A. Kazakov
2010-11-28 21:35 ` Maciej Sobczak
2010-11-29 8:41 ` Dmitry A. Kazakov
2010-11-29 10:12 ` Maciej Sobczak
2010-11-29 11:04 ` Dmitry A. Kazakov
2010-11-30 1:32 ` Randy Brukardt
2010-11-30 8:38 ` Dmitry A. Kazakov
2010-11-30 9:14 ` AdaMagica
2010-11-30 12:37 ` Georg Bauhaus
2010-11-30 20:28 ` Randy Brukardt
2010-11-30 20:31 ` Randy Brukardt
2011-01-01 16:46 ` Yannick Duchêne (Hibou57)
2011-01-02 10:14 ` AdaMagica
2011-01-02 14:11 ` Robert A Duff
2011-01-02 15:15 ` AdaMagica
2011-01-02 15:28 ` Robert A Duff
2011-01-02 15:38 ` Alex Mentis
2011-01-02 15:44 ` Robert A Duff
2011-01-03 21:38 ` Randy Brukardt
2011-01-04 0:11 ` Robert A Duff
2011-01-04 18:33 ` Alex Mentis
2011-01-04 19:47 ` Robert A Duff
2011-01-04 20:21 ` Randy Brukardt
2011-01-04 20:15 ` Randy Brukardt
2010-11-29 15:24 ` Callback in Ada (User Data argument) Warren
2010-11-30 1:35 ` Randy Brukardt
2010-11-30 16:51 ` Warren
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