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How to find the lowest common ancestor of two nodes in any binary tree?
...e for your other node in question, resulting in (steps not shown): {1, 2}
Now compare the two lists you made looking for the first element where the list differ, or the last element of one of the lists, whichever comes first.
This algorithm requires O(h) time where h is the height of the tree. In ...
What does `:_*` (colon underscore star) do in Scala?
...s taken as single arg
f(x:_*) // 2 as x is "unpacked" as a Seq[Any]*
So now we know what :_* do is to tell compiler : please unpack this argument and bind those elements to the vararg parameter in function call rather than take the x as a single argument .
So in a nutshell, the :_* is to remove ...
What is digest authentication?
...yea, that's very simplified)
The server takes username and realm (plus it knows the URI the client is requesting) and it looks up the password for that username. Then it goes and does its own version of generate_md5_key(nonce, username, realm, URI, password_I_have_for_this_user_in_my_db)
It compares...
Loading custom configuration files
I know I can open config files that are related to an assembly with the static ConfigurationManager.OpenExe(exePath) method but I just want to open a config that is not related to an assembly. Just a standard .NET config file.
...
How do I force Postgres to use a particular index?
...om_page_cost = 1;
EXPLAIN <query>; # May use index scan now
You can restore the default value with SET random_page_cost = DEFAULT; again.
Background
Index scans require non-sequential disk page fetches. Postgres uses random_page_cost to estimate the cost of such non-sequential...
How do I test a private function or a class that has private methods, fields or inner classes?
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Useful if you don't know the API perhaps, but if you are having to test private methods in this manner there is something up with your design. As another poster says unit testing should test the class's contract: if the contract is too broad and ...
Coding in Other (Spoken) Languages
...tood well the question actually is: "does every single coder in the world know enough English to use the exact same reserved words as I do?"
Well.. English is not the subject here but programming language reserved words. I mean, when I started about 10 yrs ago, I didn't have any clue of English, a...
xcodebuild says does not contain scheme
...orkspace' or '-project' arguments.
The 'Shared' box is already checked...now what?
I encountered this same issue on my own Bamboo instance; it turned out that the scheme that was committed in my repository was outdated and the latest version of the command line tools wasn't handling it gracefully...
Rollback a Git merge
...lly puts in all the other commits. I guess what I dont get is, if I dont know what/where that merge was - how do I find it? You mention finding the commit_before_merge .. I guess I am not understanding that part
– cgmckeever
Jul 30 '12 at 13:42
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When would you use a WeakHashMap or a WeakReference?
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Article now at web.archive.org/web/20061130103858/http://weblogs.java.net/blog/…
– mjn42
Jan 30 '19 at 8:38
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