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Check if a given key already exists in a dictionary
...()
for i in range(100):
key = i % 10
d[key] = d.get(key, 0) + 1
and if you wanted to always ensure a default value for any key you can either use dict.setdefault() repeatedly or defaultdict from the collections module, like so:
from collections import defaultdict
d = defaultdict(int)
f...
Bamboo Vs. Hudson(a.k.a. Jenkins) vs Any other CI systems [closed]
Anyone out there have experience with both Hudson and Bamboo? Any thoughts on the relative strengths and weaknesses of these products?
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What's the difference between & and && in MATLAB?
What is the difference between the & and && logical operators in MATLAB?
7 Answers
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How can I override Bootstrap CSS styles?
...has its own numerical 'weight':
100 points for IDs
10 points for classes and pseudo-classes
1 point for tag selectors and pseudo-elements
Note: If the element has inline styling that automatically wins (1000 points)
Among two selector styles browser will always choose the one with more weight. O...
What does “pending” mean for request in Chrome Developer Window?
...enaming the file so that it doesn't contain "ad" in the URL also fixes it, and is obviously a better solution. Unless it's an advertisement, in which case you should leave it like that. :)
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Open and write data to text file using Bash?
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What if my text is something like this and for any reason, I can't use curl or wget?
– asedsami
Dec 28 '16 at 3:53
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What are the differences between NP, NP-Complete and NP-Hard?
What are the differences between NP , NP-Complete and NP-Hard ?
11 Answers
11
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How do I move an issue on github to another repo?
It happens every now and then. Some library depends on another and a user opens an issue that belongs to the wrong repo. Can I move the issue to the other repo?
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What is the difference between atomic / volatile / synchronized?
...return counter++;
}
It basically reads value from memory, increments it and puts back to memory. This works in single thread but nowadays, in the era of multi-core, multi-CPU, multi-level caches it won't work correctly. First of all it introduces race condition (several threads can read the value...
How to extract the substring between two markers?
Let's say I have a string 'gfgfdAAA1234ZZZuijjk' and I want to extract just the '1234' part.
18 Answers
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