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What is a “context bound” in Scala?
...t covers the new context bound feature, within the context of array improvements.
Generally, a type parameter with a context bound is of the form [T: Bound]; it is expanded to plain type parameter T together with an implicit parameter of type Bound[T].
Consider the method tabulate which forms ...
Why would I ever use push_back instead of emplace_back?
...ns to avoid copies, emplace_back uses perfect forwarding to send the arguments directly to the constructor to create an object in-place. It seems to me that emplace_back does everything push_back can do, but some of the time it will do it better (but never worse).
...
How to recursively find the latest modified file in a directory?
...- -d" "
For a huge tree, it might be hard for sort to keep everything in memory.
%T@ gives you the modification time like a unix timestamp, sort -n sorts numerically, tail -1 takes the last line (highest timestamp), cut -f2 -d" " cuts away the first field (the timestamp) from the output.
Edit: J...
What is the difference between UTF-8 and Unicode?
... with such numbers as bytes... skipping a bit of history here and ignoring memory addressing issues, 8-bit computers would treat an 8-bit byte as the largest numerical unit easily represented on the hardware, 16-bit computers would expand that to two bytes, and so forth.
Old character encodings suc...
Memoization in Haskell?
...s very efficiently by making a structure that we can index in sub-linear time.
But first,
{-# LANGUAGE BangPatterns #-}
import Data.Function (fix)
Let's define f, but make it use 'open recursion' rather than call itself directly.
f :: (Int -> Int) -> Int -> Int
f mf 0 = 0
f mf n = max...
How to find if a native DLL file is compiled as x64 or x86?
... 8664 machine (x64)
6 number of sections
4BBAB813 time date stamp Tue Apr 06 12:26:59 2010
0 file pointer to symbol table
0 number of symbols
F0 size of optional header
2022 characteristics
Executable
...
Simple Digit Recognition OCR in OpenCV-Python
I am trying to implement a "Digit Recognition OCR" in OpenCV-Python (cv2). It is just for learning purposes. I would like to learn both KNearest and SVM features in OpenCV.
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What is the http-header “X-XSS-Protection”?
...g in random GETs and POSTs with different headers and the like) but I've come across something that google.com transmits in it's headers that I don't know.
...
How to import a Python class that is in a directory above?
...on docs: When inside a package hierarchy, use two dots, as the import statement doc says:
When specifying what module to import you do not have to specify the absolute name of the module. When a module or package is contained within another package it is possible to make a relative import within...
Do copyright dates need to be updated? [closed]
...a copyright year into the site I'm currently designing, it suddenly struck me:
7 Answers
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