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How to find the kth largest element in an unsorted array of length n in O(n)?
...d algorithm (called introselect) taking O(n) worst case time. There's some info on Wikipedia, but it's not very good.
Everything you need is in these powerpoint slides. Just to extract the basic algorithm of the O(n) worst-case algorithm (introselect):
Select(A,n,i):
Divide input into ⌈n/5...
How to maintain a Unique List in Java?
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You can use a Set implementation:
Some info from the JAVADoc:
A collection that contains no duplicate elements. More formally, sets contain no pair of elements e1 and e2 such that e1.equals(e2), and at most one null element. As implied by its name, this interf...
string.ToLower() and string.ToLowerInvariant()
...'t expecting. Such as producing ınfo without the dot on the i instead of info and thus mucking up string comparisons. For that reason, ToLowerInvariant should be used on any non-language-specific data. When you might have user input that might be in their native language/character-set, would gen...
Logging errors in ASP.NET MVC
...app I create.
I still use log4net, but I tend to use it for logging debug/info, and leave all exceptions to Elmah.
You can also find more information in the question How do you log errors (Exceptions) in your ASP.NET apps?.
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rails i18n - translating text with links inside
...ing:
require 'erb'
module BootstrapFlashHelper
ALERT_TYPES = [:error, :info, :success, :warning] unless const_defined?(:ALERT_TYPES)
def bootstrap_flash
flash_messages = []
flash.each do |type, message|
# Skip empty messages, e.g. for devise messages set to nothing in a locale f...
Are PHP include paths relative to the file or the calling code?
... @Pekka- awesome- just what I was looking for. For further info, see stackoverflow.com/questions/2184810/…
– Yarin
Sep 11 '11 at 14:35
7
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Make page to tell browser not to cache/preserve input values
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i need more info @KingsleySimon like browser , and you may have some settings on your browser that prevent the correct behavior
– shareef
May 9 '16 at 11:04
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How to undo a git merge with conflicts
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Thank you, this info was very helpful. I had a merge that started with git stash apply on a wrong branch, and git merge --abort did nothing (no MERGE_HEAD), while git reset --merge did the trick.
– geomaster
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Delegates in swift?
...need weak but you need to declare your protocol as a class. There is more info here stackoverflow.com/a/34566876/296446
– Robert
Feb 21 '16 at 16:29
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How to compare strings ignoring the case
...> false
"abcdef".casecmp?("ABCDEF") #=> true
Here you have more info
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