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Python multiprocessing pool.map for multiple arguments
...ort product
def merge_names(a, b):
return '{} & {}'.format(a, b)
if __name__ == '__main__':
names = ['Brown', 'Wilson', 'Bartlett', 'Rivera', 'Molloy', 'Opie']
with multiprocessing.Pool(processes=3) as pool:
results = pool.starmap(merge_names, product(names, repeat=2))
...
Difference between malloc and calloc?
What is the difference between doing:
14 Answers
14
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Can enums be subclassed to add new elements?
...it - which defeats the point of an enum being a well-known set of values.
If you could tell us more about how you want to use this, we could potentially suggest alternative solutions.
share
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impro...
how to use sed, awk, or gawk to print only what is matched?
...add use -E sed option to trigger modern RE format. Check re_format(7), specifically last paragraph of DESCRIPTION developer.apple.com/library/mac/#documentation/Darwin/Reference/…
– anddam
Mar 3 '13 at 16:33
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Git: “Not currently on any branch.” Is there an easy way to get back on a branch, while keeping the
...
If you have not committed:
git stash
git checkout some-branch
git stash pop
If you have committed and have not changed anything since:
git log --oneline -n1 # this will give you the SHA
git checkout some-branch
git merge ...
How can I specify a local gem in my Gemfile?
...
Something to watch out for might be Spring. If you are using a local path for your gem you could notice cached versions of your local gem like I did in rails console. If it doesn't seem like your local gem changes are being picked up try spring stop to see if it is i...
MongoDB relationships: embed or reference?
... not so much a "storage space" issue as it is a "data consistency" issue. If many records will refer to the same data it is more efficient and less error prone to update a single record and keep references to it in other places.
Document size considerations
MongoDB imposes a 4MB (16MB with 1.8) si...
Google maps API V3 - multiple markers on exact same spot
... on the same spot, only some which are very close together.
But a real life example with markers on the exact same spot can be seen on http://www.ejw.de/ejw-vor-ort/ (scroll down for the map and click on a few markers to see the spider-effect).
That seems to be the perfect solution for your prob...
How do I loop through or enumerate a JavaScript object?
...
"p2": "value2",
"p3": "value3"
};
for (var key in p) {
if (p.hasOwnProperty(key)) {
console.log(key + " -> " + p[key]);
}
}
For-of with Object.keys() alternative:
var p = {
0: "value1",
"b": "value2",
key: "value3"
};
for (var key ...
Which version of PostgreSQL am I running?
...n't install it myself. I access the databases using Navicat or phpPgAdmin (if that helps). I also don't have shell access to the server running the database.
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