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Implement Stack using Two Queues
... into queue2
dequeue and return the last item of queue1, then switch the names of queue1 and queue2
Version B (efficient pop):
push:
enqueue in queue2
enqueue all items of queue1 in queue2, then switch the names of queue1 and queue2
pop:
deqeue from queue1
...
Overloading and overriding
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Overloading
Overloading is when you have multiple methods in the same scope, with the same name but different signatures.
//Overloading
public class test
{
public void getStuff(int id)
{}
public void getStuff(string name)
{}
}
Overriding
Overriding is a...
How do I do an OR filter in a Django query?
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@AlexisK Use something like reduce(lambda q, f: q | Q(creator=f), filters, Q()) to create the big Q object.
– Phob
Aug 21 '12 at 22:23
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Rails 4 multiple image or file upload using carrierwave
... using Rails 4 and CarrierWave? I have a post_controller and post_attachments model. How can I do this?
6 Answers
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How can I round a number in JavaScript? .toFixed() returns a string?
Am I missing something here?
11 Answers
11
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How to squash commits in git after they have been pushed?
...git push origin +master
Difference between --force and +
From the documentation of git push:
Note that --force applies to all the refs that are pushed, hence using
it with push.default set to matching or with multiple push
destinations configured with remote.*.push may overwrite refs o...
Node.js: what is ENOSPC error and how to solve?
...h takes up 540 bytes (32-bit system), or 1 kB (double - on 64-bit). This comes out of kernel memory, which is unswappable. So, assuming you set the max at 524288, and all were used (improbable), you'd be using approx. 256MB/512MB of 32-bit/64-bit kernel memory.
– Murali Krishna...
How to center canvas in html5
...w 800x600, it should resize as well(but that's not very important at the moment)
9 Answers
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Reserved keywords in JavaScript
What JavaScript keywords (function names, variables, etc) are reserved?
8 Answers
8
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Where does Android emulator store SQLite database?
... into a running emulator. If you can get the specific directory and filename, you can do an "adb pull" to get the database file off of the emulator and onto your regular hard drive.
Edit: Removed suggestion that this works for unrooted devices too - it only works for emulators, and devices where y...