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Simple Digit Recognition OCR in OpenCV-Python
... letter_recognition.data file that comes with OpenCV samples. I wanted to know what is inside that file.
It contains a letter, along with 16 features of that letter.
And this SOF helped me to find it. These 16 features are explained in the paperLetter Recognition Using Holland-Style Adaptive Class...
What does “abstract over” mean?
... (implicit ff: Foldable[F], m: Monoid[B]) =
ff.foldMap(as, f)
Now we have something quite general. The method mapReduce will fold any F[A] given that we can prove that F is foldable and that A is a monoid or can be mapped into one. For example:
case class Sum(value: Int)
case class Pro...
How to paste yanked text into the Vim command line
... registers. What you can do with registers is extraordinary, and once you know how to use them you cannot live without them.
Registers are basically storage locations for strings. Vim has many registers that work in different ways:
0 (yank register: when you use y in normal mode, without specifyi...
Asserting successive calls to a mock method
.....: hd2 = HeavyDuty()
...: hd2.do_work(23, 29)
...:
Now, here is a test case for the heavy_work function:
In [3]: from unittest.mock import patch, call
...: def test_heavy_work():
...: expected_calls = [call.do_work(13, 17),call.do_work(23, 29)]
...:
...:...
How can I index a MATLAB array returned by a function without first assigning it to a local variable
...
well what do you know! though i agree it's pretty ugly, and probably less readable than a temp-var solution. +1 for impressive obscure matlab knowledge!
– second
Sep 2 '10 at 16:02
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Run an OLS regression with Pandas Data Frame
...red positional argument: 'endog', so i guess it's deprecated. also, ols is now OLS
– 3pitt
May 18 '18 at 18:50
...
Bash empty array expansion with `set -u`
..., Bash 4.4 fixed the situation; you don't need to use this pattern if you know your script will only run on 4.4+, but many systems are still on earlier versions.
– dimo414
May 9 at 22:28
...
How to get RelativeLayout working with merge and include?
I have been trying for a few days now to make my layouts more efficient by converting from using several levels of nested LinearLayouts to one RelativeLayout and have come across a few problems that I haven not been able to find a workaround for...
...
Getting LaTeX into R Plots
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What is the situation now? I think it has improved with R 3.1.1 little.
– Léo Léopold Hertz 준영
Oct 30 '16 at 10:09
a...
What is a C++ delegate?
...l a sad testimoney on how C++ evolves.
Only rarely is it pointed out, that now over 3 C++ standard revisions, delegates were not properly addressed. (Or the lack of language features which allow for straightforward delegate implementations.)
With the way C++11 lambda functions are defined by the sta...