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Time complexity of Sieve of Eratosthenes algorithm
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4 Answers
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Reverse Range in Swift
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Update For latest Swift 3 (still works in Swift 4)
You can use the reversed() method on a range
for i in (1...5).reversed() { print(i) } // 5 4 3 2 1
Or stride(from:through:by:) method
for i in stride(from:5,through:1,by:-1) { print(i) } // 5 4 3 2 1
stide(from:to:b...
“aapt” IOException error=2, No such file or directory" why can't I build my gradle on jenkins?
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'uint32_t' identifier not found error
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4
You can also use Boost's cstdint implementation.
– Peter Huene
Mar 2 '11 at 2:34
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Iterating Over Dictionary Key Values Corresponding to List in Python
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43
dict.iteritems() was removed since Python3. You should use dict.items() instead
– Sergey
Jan 21 '16 ...
Nested JSON objects - do I have to use arrays for everything?
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204
You don't need to use arrays.
JSON values can be arrays, objects, or primitives (numbers or str...
How to make the 'cut' command treat same sequental delimiters as one?
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Try:
tr -s ' ' <text.txt | cut -d ' ' -f4
From the tr man page:
-s, --squeeze-repeats replace each input sequence of a repeated character
that is listed in SET1 with a single occurrence
of that character
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R - Concatenate two dataframes?
...umn b to data frame b.
Results
> a <- data.frame(a=c(0,1,2), b=c(3,4,5), c=c(6,7,8))
> a
a b c
1 0 3 6
2 1 4 7
3 2 5 8
> b <- data.frame(a=c(9,10,11), c=c(12,13,14))
> b
a c
1 9 12
2 10 13
3 11 14
> b$b <- NA
> b
a c b
1 9 12 NA
2 10 13 NA
3 11 14 NA
> ne...
Python Dictionary to URL Parameters
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answered Aug 5 '09 at 14:16
mipadimipadi
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