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Why do we need tuples in Python (or any immutable data type)?
...f sets, or keys in dictionaries). Again, this afford optimization, but far more than just "substantial" (designing decent hash tables storing completely mutable objects is a nightmare -- either you take copies of everything as soon as you hash it, or the nightmare of checking whether the object's ha...
Open soft keyboard programmatically
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@YosiTaguri, much more elegant if you are dealing with activities. And what about fragments ?! +1 for both answers
– S.Thiongane
Feb 19 '14 at 15:07
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Find the max of two or more columns with pandas
...2 1
1 2 8 8
2 3 1 3
np.maximum.reduce and np.max appear to be more or less the same (for most normal sized DataFrames)—and happen to be a shade faster than DataFrame.max. I imagine this difference roughly remains constant, and is due to internal overhead (indexing alignment, handling ...
Java's Interface and Haskell's type class: differences and similarities?
...ike add :: t -> t -> t with an interface, where it is polymorphic on more than one parameter, because there's no way for the interface to specify that the argument type and return type of the method is the same type as the type of the object it is called on (i.e. the "self" type). With Generic...
Check whether a variable is a string in Ruby
Is there anything more idiomatic than the following?
6 Answers
6
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How to mark a class as Deprecated? [duplicate]
How do you mark a class as deprecated? I do not want to use a class any more in my project, but do not want to delete it before a period of 2 weeks.
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Plain Old CLR Object vs Data Transfer Object
... Martin Fowler [anecdote here]. He used the term POJO as a way to make it more sexy to reject the framework heavy EJB implementations. POCO should be used in the same context in .Net. Don't let frameworks dictate your object's design.
A DTO's only purpose is to transfer state, and should have no...
How to get current foreground activity context in android?
... memory leak problem, because of the static reference to the activity. For more detail see the following link http://android-developers.blogspot.fr/2009/01/avoiding-memory-leaks.html
To avoid this, you should manage activities references.
Add the name of the application in the manifest file:
<a...
Should I use alias or alias_method?
...te unpredictable at times.
Verdict: Use alias_method - it gives you a ton more flexibility.
Usage:
def foo
"foo"
end
alias_method :baz, :foo
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