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Best way to merge two maps and sum the values of same key?
...p is just a set of values, together with an operator that takes two values from that set, and produces another value from that set. So integers under addition are a semigroup, for example - the + operator combines two ints to make another int.
You can also define a semigroup over the set of "all m...
Parsing XML with namespace in Python via 'ElementTree'
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Thank you. Any idea how can I get the namespace directly from XML, without hard-coding it? Or how can I ignore it? I've tried findall('{*}Class') but it wont work in my case.
– Kostanos
Nov 27 '13 at 1:26
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Unable to find a locale path to store translations for file __init__.py
...e a locale folder first using mkdir locale. If you are running the command from within an app folder, you need a locale folder within that app folder.
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Manually adding a Userscript to Google Chrome
...sily manage them. Also it makes it easier to install userscripts directly from sites like OpenUserJS, MonkeyGuts, etc.
Finally, it unlocks most all of the GM functionality that you don't get by installing a GM script directly with Chrome. That is, more of what GM on Firefox can do, is available w...
How does the new automatic reference counting mechanism work?
Can someone briefly explain to me how ARC works? I know it's different from Garbage Collection, but I was just wondering exactly how it worked.
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Calculating width from percent to pixel then minus by pixel in LESS CSS
I will calculate width in some element from percent to pixel so I will minus -10px via using LESS and calc() . It´s possible?
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Parse date string and change format
... without having to specify the format like you do with datetime.strptime.
from dateutil.parser import parse
dt = parse('Mon Feb 15 2010')
print(dt)
# datetime.datetime(2010, 2, 15, 0, 0)
print(dt.strftime('%d/%m/%Y'))
# 15/02/2010
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How to read all files in a folder from Java?
...e/you/Desktop");
listFilesForFolder(folder);
Files.walk API is available from Java 8.
try (Stream<Path> paths = Files.walk(Paths.get("/home/you/Desktop"))) {
paths
.filter(Files::isRegularFile)
.forEach(System.out::println);
}
The example uses try-with-resources patte...
How do I export UIImage array as a movie?
...ay with several UIImage objects. What I now want to do, is create movie from those UIImages . But I don't have any idea how to do so.
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Multithreading: What is the point of more threads than cores?
...ads running at a time? Wouldn't they just be stealing time (CPU Resources) from each other?
17 Answers
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