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Why does String.split need pipe delimiter to be escaped?
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String.split expects a regular expression argument. An unescaped | is parsed as a regex meaning "empty string or empty string," which isn't what you mean.
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Size of Matrix OpenCV
..., may be helpful for the beginners
#include <iostream>
#include <string>
#include "opencv/highgui.h"
using namespace std;
using namespace cv;
int main()
{
cv:Mat M(102,201,CV_8UC1);
int rows = M.rows;
int cols = M.cols;
cout<<rows<<" "<<cols<<e...
What is an 'endpoint' in Flask?
...al way that you might go about creating a view, it actually abstracts some extra info from you. Behind the scenes, Flask did not make the leap directly from URL to the view function that should handle this request. It does not simply say...
URL (http://www.example.org/greeting/Mark) should be handl...
What is the maximum characters for the NVARCHAR(MAX)?
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From MSDN Documentation
nvarchar [ ( n | max ) ]
Variable-length Unicode string data. n defines the string length and can be a value from 1 through 4,000. max indicates that the maximum storage size is 2^31-1 bytes (2 GB).
The storage size, in bytes, is two times the actual length of data entered ...
How to set java_home on Windows 7?
... @Aboozar Rajabi, You need " " if ... path contain a space char.
– Stéphane GRILLON
Aug 22 '16 at 8:18
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Measuring execution time of a function in C++
...usage:
#include <iostream>
#include <algorithm>
typedef std::string String;
//first test function doing something
int countCharInString(String s, char delim){
int count=0;
String::size_type pos = s.find_first_of(delim);
while ((pos = s.find_first_of(delim, pos)) != String:...
Understanding the meaning of the term and the concept - RAII (Resource Acquisition is Initialization
...lso often superior to RAII when dealing with shared immutable objects like strings which often have no clear owner and require no cleanup. It's unfortunate that more frameworks don't seek to combine GC and RAII, since most applications will have a mix of immutable objects (where GC would be best) a...
How do you represent a JSON array of strings?
...nts are always ignored by any JSON parser.
And value is an object, array, string, number, bool or null:
So yeah, ["a", "b"] is a perfectly valid JSON, like you could try on the link Manish pointed.
Here are a few extra valid JSON examples, one per block:
{}
[0]
{"__comment": "json doesn't accept...
What are carriage return, linefeed, and form feed?
What is the meaning of the following control characters:
12 Answers
12
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What is the meaning and difference between subject, user and principal?
...at is the benefit of breaking things down to Subject, Principal, User, its extra complexity what benefit do we get from this extra complexity?
– ams
Feb 17 '11 at 6:20
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