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Java OCR implementation [closed]
...t I'm still interested in proprietary solutions, as I could at least check out the performance in that case.
5 Answers
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Determine Whether Two Date Ranges Overlap
...e the endDates. Deriving this from above:
If start and end dates can be out of order, i.e., if it is possible that startA > endA or startB > endB, then you also have to check that they are in order, so that means you have to add two additional validity rules:
(StartA <= EndB) and (StartB...
Advantages and disadvantages of GUID / UUID database keys
...e's always a bit of uncertainty, especially around performance and un-read-out-over-the-phone-able URLs.
9 Answers
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Weighted random numbers
...I'm currently just banging my head against the wall and cannot figure this out.
7 Answers
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What are the aspect ratios for all Android phone and tablet devices?
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Now that the Blackberry Passport is out and runs Android apps, you might want to add 1:1 for its perfectly square 1440x1440 display. If you have smallScreens=false, I would guess that Passport would be ruled out, as anything with less than a 1.5 aspect ratio w...
Spark java.lang.OutOfMemoryError: Java heap space
...allow your shuffles to spill to disk (it's the default since 1.0.0).
Watch out for memory leaks, these are often caused by accidentally closing over objects you don't need in your lambdas. The way to diagnose is to look out for the "task serialized as XXX bytes" in the logs, if XXX is larger than a...
(grep) Regex to match non-ASCII characters?
... bug that prevents it working with non-ASCII filenames, and I have to find out how many are affected. I was going to do this with find and then do a grep to print the non-ASCII characters, and then do a wc -l to find the number. It doesn't have to be grep; I can use any standard Unix regular ...
How to extract public key using OpenSSL?
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openssl rsa -in privkey.pem -pubout > key.pub
That writes the public key to key.pub
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SQL WHERE condition is not equal to?
... id <> 2
As @Frank Schmitt noted, you might want to be careful about the NULL values too. If you want to delete everything which is not 2(including the NULLs) then add OR id IS NULL to the WHERE clause.
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How to convert a string Date to long millseconds
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It’s about time someone provides the modern answer to this question. In 2012 when the question was asked, the answers also posted back then were good answers. Why the answers posted in 2016 also use the then long outdated classes Si...