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How to remove convexity defects in a Sudoku square?
...processing function, so this should be possible in OpenCV, too. The spline-based image transformation might be harder, but I don't think you really need it. Probably using the perspective transformation you use now on each individual cell will give good enough results.
...
Why are Perl 5's function prototypes bad?
...nce. (As an aside, this is why I don't initialize arrays/lists to 0- or 1-based numeric sequences in throw-away, demonstrative code. Confusion between indices, counts, and elements in contexts has bitten me more than once. Silly but true.)
– pilcrow
May 9 '1...
MyISAM versus InnoDB [closed]
I'm working on a projects which involves a lot of database writes, I'd say ( 70% inserts and 30% reads ). This ratio would also include updates which I consider to be one read and one write. The reads can be dirty (e.g. I don't need 100% accurate information at the time of read).
The task in que...
Need to reset git branch to origin version
...
I have a private repo on a server and regularly rebase/force-push to it, which makes it necessary to reset the local branch on my other computer often. I therefore created the following alias "catchup", which allows doing this for the current branch. Unlike the other answer ...
How to get the Full file path from URI
....content.ContentUris;
import android.content.Context;
import android.database.Cursor;
import android.net.Uri;
import android.os.Build;
import android.os.Environment;
import android.provider.DocumentsContract;
import android.provider.MediaStore;
import java.net.URISyntaxException;
/**
* Crea...
How to filter specific apps for ACTION_SEND intent (and set a different text for each app)
...s been asked in various ways, but I haven't been able to gather a solution based on the answers given. Hopefully someone can help. I would like to provide the ability to share within an app. Following Android Dev Alexander Lucas' advice , I'd prefer to do it using intents and not using the Facebook...
Using Java 8's Optional with Stream::flatMap
...
I'm adding this second answer based on a proposed edit by user srborlongan to my other answer. I think the technique proposed was interesting, but it wasn't really suitable as an edit to my answer. Others agreed and the proposed edit was voted down. (I wa...
What is the best way to deal with the NSDateFormatter locale “feechur”?
...dt = DateFormatter.getDateFromString(string: "2001-05-05 12:34:56")
print("base date = \(dt)")
dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
let dateString = dateFormatter.string(from: Date())
print("dateString = " + dateString)
let date1 = dateFormatter.date(from: "2001-05-05 12:34:56")
print("d...
Is module __file__ attribute absolute or relative?
...hon-2.*, the second call incorrectly determines the path.abspath(__file__) based on the current directory:
cwd: C:\codes\py
__file__:cwd_mayhem.py
abspath: C:\codes\py\cwd_mayhem.py
cwd: C:\codes
__file__:cwd_mayhem.py
abspath: C:\codes\cwd_mayhem.py
As noted by @techtonik, in Python 3.4+...
Simple explanation of clojure protocols
...ion is hard, because you need to add it either to all leaf classes or to a base class, thus modifying existing code.
Several languages have several constructs for solving the Expression Problem: Haskell has typeclasses, Scala has implicit arguments, Racket has Units, Go has Interfaces, CLOS and Clo...