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What are the Dangers of Method Swizzling in Objective-C?
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I think this is a really great question, and it's a shame that rather than tackling the real question, most answers have skirted the issue and simply said not to use swizzling.
Using method sizzling is like using sharp knives in the kitchen. So...
JSON serialization of Google App Engine models
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There is a small mistake in the code: Where you have "output[key] = to_dict(model)" it should be: "output[key] = to_dict(value)". Besides that it's perfect. Thanks!
– arikfr
Nov 7 '09 at 22:02
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What is the difference between a.getClass() and A.class in Java?
...getClass() will return the B class.
A.class evaluates to the A class statically, and is used for other purposes often related to reflection.
In terms of performance, there may be a measurable difference, but I won't say anything about it because in the end it is JVM and/or compiler dependent.
T...
How can I pass a list as a command-line argument with argparse?
...ingle argument.
parser.add_argument('--list-type', type=list)
# This will allow you to provide multiple arguments, but you will get
# a list of lists which is not desired.
parser.add_argument('--list-type-nargs', type=list, nargs='+')
# This is the correct way to handle accepting multiple argument...
How do I get the row count of a pandas DataFrame?
...[0].count()", "len(data.index)"],
xlabel="data rows"
)
EDIT: As @Dan Allen noted in the comments len(df.index) and df[0].count() are not interchangeable as count excludes NaNs,
share
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improve...
How to use if statements in underscore.js templates?
...ue proposed in this answer is that you're stuck doing string interpolation all over again, which templates are supposed to solve for you. As of right now, _.template inserts a ; at the start of each compiled code tag. Thus, it can handle tags breaking between statements, but not inside of expression...
How to suppress scientific notation when printing float values?
...cify how many digit after the . you wish to display, this depends on how small is the floating number). See this example:
>>> a = -7.1855143557448603e-17
>>> '{:f}'.format(a)
'-0.000000'
as shown above, default is 6 digits! This is not helpful for our case example, so instead we...
Cannot create an NSPersistentStoreCoordinator with a nil model
...to "Model" as argument. But Xcode refuses to load it, but this file as actually there! I don't know, what's happening.
– Darmen Amanbayev
Oct 7 '13 at 5:45
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Token Authentication for RESTful API: should the token be periodically changed?
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It is good practice to have mobile clients periodically renew their authentication token. This of course is up to the server to enforce.
The default TokenAuthentication class does not support this, however you can extend it to achieve this functionality.
For example:
from...
A regex to match a substring that isn't followed by a certain other substring
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Well, I was generally aiming towards whole words. Like I said, I'm confused about what I really want and what is really possible. Doing it like this will work. Thank you for time. :)
– Rayne
Apr 13 '10 a...