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What is causing this ActiveRecord::ReadOnlyRecord error?
... answered. I actually discovered I could remove a join from that query, so now the working query is
6 Answers
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unable to copy/paste in mingw shell
...ight click the icon on the top left hand corner of MINGW64:
Select Options
Now Select keys
On the right hand you will find Shortcuts
If not thicked, thick Copy and Paste
Now always remeber the instruction given to copy & paste as follows:
Copy: Ctrl+ Ins (insert)
i.e. To copy on MINGW, only h...
How does a Breadth-First Search work when looking for Shortest Path?
... @Shashank If we are not maintaining distance then how would we know the shortest distance,please explain more.
– Gaurav Sehgal
Apr 12 '15 at 19:17
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Git undo changes in some files [duplicate]
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# the -n means, do not commit the revert yet
git revert -n <sha1>
# now make sure we are just going to commit the revert to A
git reset B
git commit
If on the other hand, you had committed it, but the commit involved rather a lot of files that you do not also want to revert, then the above ...
Keystore change passwords
... currently have a keystore, with a particular password that only I should know. I now need to give access to that keystore to someone else, so I would like to either:
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Maximum single-sell profit
...pective max and min.
If we use this approach, our recurrence relation is now
T(1) <= O(1)
T(n) <= 2T(n / 2) + O(1)
Using the Master Theorem here gives us a runtime of O(n) with O(lg n) space, which is even better than our original solution!
But wait a minute - we can do even better than ...
iPhone Simulator suddenly started running very slow
...hone simulator for a number of weeks and it has been running well up until now, but all of a sudden has begun running very slow both when loading content and animations. I have not made any changes to my code since I last tested it successfully.
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Is recursion ever faster than looping?
I know that recursion is sometimes a lot cleaner than looping, and I'm not asking anything about when I should use recursion over iteration, I know there are lots of questions about that already.
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What are the primary differences between TDD and BDD? [closed]
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Above 'Tom Ten Thij' link is dead by now.. here's live @ - tomtenthij.nl/2008/1/25/…
– Kundan Pandit
Jan 19 '15 at 6:41
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Recommended method for escaping HTML in Java
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The above example is broken. Use escapeHtml4() method now.
– stackoverflowuser2010
Jun 24 '14 at 17:47
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