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Shell command to sum integers, one per line?
...the stack has two or more values, run "add_top_of_stack"
Print the result, now the only item left in the stack
To really understand the simplicity and power of dc, here is a working Python script that implements some of the commands from dc and executes a Python version of the above command
mongodb count num of distinct values per field/key
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this doesn't really work if your number of distinct values is too high... if you were looking at distinct names of people in the world or something. do you have an answer that scales?
– underrun
Oct 1 '14 at 18:...
How do I find out what keystore my JVM is using?
I need to import a certificate into my JVM keystore. I am using the following:
10 Answers
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How to throw std::exceptions with variable messages?
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what's the difference between this and an std::stringstream? It appears to contain a stringstream, but has (as far as I can tell), no extra functionality.
– matts1
Sep 4 '16 at 1:43
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Pythonic way to combine FOR loop and IF statement
I know how to use both for loops and if statements on separate lines, such as:
10 Answers
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How to use ArrayAdapter
I have created row.xml in layouts, but don't know how to show both reason and long_val in the ListView using ArrayAdapter.
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How to capture UIView to UIImage without loss of quality on retina display
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The currently accepted answer is now out of date, at least if you are supporting iOS 7.
Here is what you should be using if you are only supporting iOS7+:
+ (UIImage *) imageWithView:(UIView *)view
{
UIGraphicsBeginImageContextWithOptions(view.bounds.s...
Stripping everything but alphanumeric chars from a string in Python
...it -s \
"import string" \
"''.join(ch for ch in string.printable if ch.isalnum())"
10000 loops, best of 3: 57.6 usec per loop
$ python -m timeit -s \
"import string" \
"filter(str.isalnum, string.printable)"
10000 loops, best of 3: 37.9 usec per loop
$ python -m...
LINQ to SQL: Multiple joins ON multiple Columns. Is this possible?
... I didn't do that, but also would just need 1 join on multiple fields. But now I need more, and it ONLY WORKS if I assign a variable name to the fields like in this example.
– user2415376
Oct 28 '16 at 14:14
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What would cause an algorithm to have O(log n) complexity?
My knowledge of big-O is limited, and when log terms show up in the equation it throws me off even more.
6 Answers
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