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Tainted canvases may not be exported
...g any exteranl file or url to get a cross domain issue. Then why it is resulting in this error?
– Sajith
Feb 25 '15 at 5:19
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Time complexity of Euclid's Algorithm
I am having difficulty deciding what the time complexity of Euclid's greatest common denominator algorithm is. This algorithm in pseudo-code is:
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how to check if object already exists in a list
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How to check multiple value?
– Nitin Karale
Feb 25 '19 at 9:52
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JavaScript/jQuery to download file via POST with JSON data
...reate_binary_file.php', postData, function(retData) {
$("body").append("<iframe src='" + retData.url+ "' style='display: none;' ></iframe>");
});
What this actually does: perform a post to /create_binary_file.php with the data in the variable postData; if that post completes success...
“cannot resolve symbol R” in Android Studio
...Jan 21 '19 at 9:05
Tushar MonirulTushar Monirul
4,07799 gold badges3030 silver badges4545 bronze badges
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Look up all descendants of a class in Ruby
...elf.descendants
ObjectSpace.each_object(Class).select { |klass| klass < self }
end
end
class Child < Parent
end
class GrandChild < Child
end
puts Parent.descendants
puts Child.descendants
puts Parent.descendants gives you:
GrandChild
Child
puts Child.descendants gives you:
Gr...
Saving an Object (Data persistence)
...st one available depends on what version of Python is being used. The default also depends on Python version. In Python 2 the default was Protocol version 0, but in Python 3.8.1, it's Protocol version 4. In Python 3.x the module had a pickle.DEFAULT_PROTOCOL added to it, but that doesn't exist in Py...
Convert list to tuple in Python
...onvert a list l into a tuple:
In [1]: l = [4,5,6]
In [2]: tuple
Out[2]: <type 'tuple'>
In [3]: tuple(l)
Out[3]: (4, 5, 6)
However, if you've redefined tuple to be a tuple rather than the type tuple:
In [4]: tuple = tuple(l)
In [5]: tuple
Out[5]: (4, 5, 6)
then you get a TypeError sinc...
How to force file download with PHP
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Read the docs about built-in PHP function readfile
$file_url = 'http://www.myremoteserver.com/file.exe';
header('Content-Type: application/octet-stream');
header("Content-Transfer-Encoding: Binary");
header("Content-disposition: attachment; filen...
How to parse a JSON string to an array using Jackson
...ectMapper();
TypeFactory typeFactory = objectMapper.getTypeFactory();
List<SomeClass> someClassList = objectMapper.readValue(jsonString, typeFactory.constructCollectionType(List.class, SomeClass.class));
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