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How to add to an existing hash in Ruby
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64
my_hash = {:a => 5}
my_hash[:key] = "value"
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Explaining Python's '__enter__' and '__exit__'
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Using these magic methods (__enter__, __exit__) allows you to implement objects which can be used easily with the with statement.
The idea is that it makes it easy to build code which needs some 'cleandown' code executed (think of it as a try-finally...
What is the difference between public, protected, package-private and private in Java?
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The official tutorial may be of some use to you.
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| │ Class │ Package │ Subclass │ Subclass │ World |
| │ │ │(same pkg)│(diff pkg)│ |
|─────...
How useful/important is REST HATEOAS ( maturity level 3)?
...augmented by the human being that is able to interpret and intuit the text based interface, recognize a small graphic with a shopping cart, and suss out what that actually means.
Most folks writing software don't do that. Most folks writing automated clients don't care. Most folks find it easier to...
How do I show a Save As dialog in WPF?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Get exception description and stack trace which caused an exception, all as a string
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See the traceback module, specifically the format_exc() function. Here.
import traceback
try:
raise ValueError
except ValueError:
tb = traceback.format_exc()
else:
tb = "No error"
finally:
print tb
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What are the performance characteristics of sqlite with very large database files? [closed]
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takrl
5,95833 gold badges5353 silver badges6464 bronze badges
answered Jun 30 '11 at 11:21
AlexAlex
1,72711 gold badge101...
List attributes of an object
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>>> class new_class():
... def __init__(self, number):
... self.multi = int(number) * 2
... self.str = str(number)
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>>> a = new_class(2)
>>> a.__dict__
{'multi': 4, 'str': '2'}
>>> a.__dict__.keys(...
Returning value that was passed into a method
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Difference between __str__ and __repr__?
What is the difference between __str__ and __repr__ in Python?
23 Answers
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