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Sorting an ArrayList of objects using a custom sorting order
... if (o1 != null && o2 != null) {
o1 = o1.getClass().getMethod(getter, new Class[0]).invoke(o1, new Object[0]);
o2 = o2.getClass().getMethod(getter, new Class[0]).invoke(o2, new Object[0]);
}
} catch (Exception e) {
// I...
UIGestureRecognizer on UIImageView
I have a UIImageView , which I want to be able to resize and rotate etc.
8 Answers
8
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error opening HPROF file: IOException: Unknown HPROF Version
... Eclipse preferences first and then select Android from the left hand menu etc
– Mick
Jun 27 '12 at 22:00
1
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When should I use a struct instead of a class?
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Use a structure if:
It will act like a primitive type (int, long, byte, etc.).
It must have a small memory footprint.
You are calling a P/Invoke method that requires a structure to be passed in by
value.
You need to reduce the impact of garbage collection on application performance.
Its fields ne...
How to find the key of the largest value hash?
...rieve more than one key value pair based on order(second largest, smallest etc.), a more efficient way will be to sort the hash once and then get the desired results.
def descend_sort(hash)
hash = hash.sort_by {|k,v| v}.reverse
end
Key of largest value
puts *hash[0][0]
Get max and min
puts...
What's the difference between F5 refresh and Shift+F5 in Google Chrome browser?
... the current page, ignoring cached content (i.e. JavaScript files, images, etc.):
SHIFT + F5 or CTRL + F5 or CTRL + SHIFT + R
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How to define hash tables in Bash?
...n for very large hash tables. You have to enforce key uniqueness yourself, etc. Even if you only have a few hundred entries, the output file/grep combo is going to be quite a bit faster - in my experience several times faster. It also eats less memory.
Here's one way to do it:
hinit() {
rm -f ...
Showing a different background colour in Vim past 80 characters
...s setting as a string every time it enters a window, initializes a buffer, etc, so this is kind of an expensive way of achieving the desired result.
– cptstubing06
Mar 8 '13 at 4:08
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Collection versus List what should you use on your interfaces?
...> is supposed to indicate that you are making your own "Add", "Remove", etc methods.
You likely don't need to worry about it, because you're probably coding the interface for yourself only (or maybe a few collegues). Here's another example that might make sense.
If you have a public array, ex:
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invalid command code ., despite escaping periods, using sed
...main contain / ? If so, try using separator other than / in sed, e.g. #, , etc.
find ./ -type f -exec sed -i 's#192.168.20.1#new.domain.com#' {} \;
It would also be good to enclose s/// in single quote rather than double quote to avoid variable substitution or any other unexpected behaviour
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