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How to crop an image in OpenCV using Python
...x2,y2) as the bottom-right vertex of a rectangle region within that image, then:
roi = im[y1:y2, x1:x2]
here is a comprehensive resource on numpy array indexing and slicing which can tell you more about things like cropping a part of an image. images would be stored as a numpy array in opencv2.
...
spring boot default H2 jdbc connection (and H2 console)
... am not sure if this is right but since no one else has offered a solution then I am going to suggest this is the best way to do it.
In my case, I chose a specific name for the database so that I would have something to enter when starting the H2 console (in this case, "AZ"). I think all of these a...
snprintf and Visual Studio 2010
...sprintf_s docs say, "If the buffer is too small for the text being printed then the buffer is set to an empty string". In contrast snprintf writes a truncated string to the output.
– Andrew Bainbridge
Oct 27 '14 at 20:04
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How do I count the number of occurrences of a char in a String?
...de can be minimized by making it a method in your own "StringUtils" class. Then the ugly code is in exactly one spot, and everywhere else is nicely readable.
– RonR
Jun 5 '14 at 16:54
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jQuery Set Cursor Position in Text Area
...ion setCaretToPos (input, pos) {
setSelectionRange(input, pos, pos);
}
Then you can use setCaretToPos like this:
setCaretToPos(document.getElementById("YOURINPUT"), 4);
Live example with both a textarea and an input, showing use from jQuery:
function setSelectionRange(input, selectionSta...
How to determine if a string is a number with C++?
...ou want to allow hexadecimal and octal constants in C/C++ style ("0xABC"), then make the last parameter 0 instead.
Your function then can be written as
bool isParam(string line)
{
char* p;
strtol(line.c_str(), &p, 10);
return *p == 0;
}
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What does the “map” method do in Ruby?
...
thanks speransky for the example. then how is .map different from .each?
– bigpotato
Aug 23 '12 at 4:06
3
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create two method for same url pattern with different arguments
... The other way I had handled this is to accept the parameter as a String, then call Long.parseLong() on it. If it parses, then its the the userId, if it doesn't, assume its the username.
– CodeChimp
Apr 8 '13 at 19:42
...
Does MS SQL Server's “between” include the range boundaries?
...with a datetime as late as 01/01/2009 23:59:59.997 <-- couldnt you just then use AND '01/31/2009 23:59:59.99999999' or however many 9's are required
– wal
Jul 27 '16 at 4:39
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Javascript objects: get parent [duplicate]
...g this.
So we define the parent property directly inside the child object.
Then (optionally) we can remove the init method.
Finally we give the main object back as output from the init function.
If you try to get main.child.parent.name now you will get it right.
It is a little bit tricky but it w...