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how to calculate binary search complexity
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Here a more mathematical way of seeing it, though not really complicated. IMO much clearer as informal ones:
The question is, how many times can you divide N by 2 until you have 1? This is essentially saying, do a binary search (half the elements) until you found it. In a formula this...
Why can't a text column have a default value in MySQL?
...lue" returns about 2,940 results on Google. Most of them are reports of incompatibilities when trying to install DB scripts that worked on one system but not others.
I am running into the same problem now on a webapp I'm modifying for one of my clients, originally deployed on Linux MySQL v5.0.83-l...
Difference in make_shared and normal shared_ptr in C++
...t;("bar"));
Update II: Disadvantage of std::make_shared
Quoting Casey's comments:
Since there there's only one allocation, the pointee's memory cannot be deallocated until the control block is no longer in use. A weak_ptr can keep the control block alive indefinitely.
Why do instances of we...
Error when testing on iOS simulator: Couldn't register with the bootstrap server
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Try quitting and restarting the simulator? If "worse comes to worst" you can always try restarting: in my experience this should fix it.
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What does `kill -0 $pid` in a shell script do?
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I feel like the command man 2 kill is outside the 1st amendment :)
– JBaczuk
Aug 24 '17 at 13:49
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How do you organise multiple git repositories, so that all of them are backed up together?
...e easily work on any of the machines. I could checkout a specific project, commit and it updated the 'master' project, or I could checkout the entire thing.
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Run PHP Task Asynchronously
...end is mostly in PHP. There are several places in the code where I need to complete some task, but I don't want to make the user wait for the result. For example, when creating a new account, I need to send them a welcome email. But when they hit the 'Finish Registration' button, I don't want to mak...
How do I install from a local cache with pip?
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community wiki
6 revs, 3 users 87%Matthew Rankin
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Java: Why is the Date constructor deprecated, and what do I use instead?
I come from the C# world, so not too experienced with Java yet. I was just told by Eclipse that Date was deprecated:
14 A...
Does using final for variables in Java improve garbage collection?
...ect referred to by a live object is also marked as being alive.
After the completion of the mark phase, the GC sweeps through the heap, freeing memory for all unmarked objects (and compacting the memory for the remaining live objects).
Also, it's important to recognize that the Java heap memory is...