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cv2.imshow command doesn't work properly in opencv-python
...e code created a window of the correct name, but its content is just blank and doesn't show the image:
15 Answers
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Example: Communication between Activity and Service using Messaging
I couldn't find any examples of how to send messages between an activity and a service, and I have spent far too many hours figuring this out. Here is an example project for others to reference.
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What is the difference between “AS” and “IS” in an Oracle stored procedure?
I see Oracle procedures sometimes written with "AS", and sometimes with "IS" keyword.
6 Answers
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CALL command vs. START with /WAIT option
How is the START command with a WAIT option
6 Answers
6
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Performance of foreach, array_map with lambda and array_map with static function
...2 compare with mcfedr's answer below for additional results without XDebug and a more recent PHP version.
function lap($func) {
$t0 = microtime(1);
$numbers = range(0, 1000000);
$ret = $func($numbers);
$t1 = microtime(1);
return array($t1 - $t0, $ret);
}
function useForeach($numbers) {...
Int division: Why is the result of 1/3 == 0?
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The two operands (1 and 3) are integers, therefore integer arithmetic (division here) is used. Declaring the result variable as double just causes an implicit conversion to occur after division.
Integer division of course returns the tr...
What's the safest way to iterate through the keys of a Perl hash?
...ng each may in some way have unintended side effects. So, is that true, and is one of the two following methods best, or is there a better way?
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How to Vertical align elements in a div?
I have a div with two images and an h1 . All of them need to be vertically aligned within the div, next to each other.
29 ...
Merge / convert multiple PDF files into one PDF
...er to provide out.pdf, or else it will overwrite the last file in your command, sigh.
– mlissner
Oct 19 '13 at 22:20
10
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Find current directory and file's directory [duplicate]
In Python, what commands can I use to find:
13 Answers
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