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How to change Navigation Bar color in iOS 7?
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320
The behavior of tintColor for bars has changed in iOS 7.0. It no longer affects the bar's backgr...
How to know that a string starts/ends with a specific string in jQuery?
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answered Sep 15 '10 at 6:57
Lukáš LalinskýLukáš Lalinský
37k66 gold badges8888 silver badges113113 bronze badges
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What's the difference between Ruby's dup and clone methods?
...ot.
class Foo
attr_accessor :bar
end
o = Foo.new
o.freeze
o.dup.bar = 10 # succeeds
o.clone.bar = 10 # raises RuntimeError
The Rubinius implementation for these methods
is often my source for answers to these questions, since it is quite clear, and a fairly compliant Ruby implementation.
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How to implement a good __hash__ function in python [duplicate]
...t for immutable objects.
A trivial implementation would be to just return 0. This is always correct, but performs badly.
Your solution, returning the hash of a tuple of properties, is good. But note that you don't need to list all properties that you compare in __eq__ in the tuple. If some propert...
Can I find out the return value before returning while debugging in Eclipse?
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This feature was added to Eclipse version 4.7 M2 under Eclipse bug 40912.
To use it:
step over the return statement (using "Step Over" or "Step Return")
now the first line in the variable view will show the result of the return statement, as "[statement xxx] returned: "
See Eclipse Proje...
Under what circumstances are linked lists useful?
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40
They can be useful for concurrent data structures.
(There is now a non-concurrent real-world us...
How random is JavaScript's Math.random?
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Given numbers between 1 and 100.
9 have 1 digit (1-9)
90 have 2 digits (10-99)
1 has 3 digits (100)
Given numbers between 1 and 1000.
9 have 1 digit
90 have 2 digits
900 have 3 digits
1 has 4 digits
and so on.
So if you select some at random, t...
“No such file or directory” error when executing a binary
I was installing a binary Linux application on Ubuntu 9.10 x86_64. The app shipped with an old version of gzip (1.2.4), that was compiled for a much older kernel:
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