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Redirect Windows cmd stdout and stderr to a single file
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1111
You want:
dir > a.txt 2>&1
The syntax 2>&1 will redirect 2 (stderr) to 1 ...
Finding duplicates in O(n) time and O(1) space
Input: Given an array of n elements which contains elements from 0 to n-1, with any of these numbers appearing any number of times.
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Error: “dictionary update sequence element #0 has length 1; 2 is required” on Django 1.4
I have an error message on django 1.4:
12 Answers
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How is a CRC32 checksum calculated?
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118
The polynomial for CRC32 is:
x32 + x26 + x23 + x22 + x16 + x12 + x11 + x10 + x8 + x7 + x5 ...
Scala @ operator
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180
It enables one to bind a matched pattern to a variable. Consider the following, for instance:
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pyplot scatter plot marker size
...d the output they produce.
# doubling the width of markers
x = [0,2,4,6,8,10]
y = [0]*len(x)
s = [20*4**n for n in range(len(x))]
plt.scatter(x,y,s=s)
plt.show()
gives
Notice how the size increases very quickly. If instead we have
# doubling the area of markers
x = [0,2,4,6,8,10]
y = [0]*len(...
Time complexity of Sieve of Eratosthenes algorithm
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118
Your n/2 + n/3 + n/5 + … n/97 is not O(n), because the number of terms is not constant. [Ed...
How many files can I put in a directory?
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Inserting a PDF file in LaTeX
...myfile.pdf}
To include just the first page of a PDF:
\includepdf[pages={1}]{myfile.pdf}
Run texdoc pdfpages in a shell to see the complete manual for pdfpages.
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Remove the last character in a string in T-SQL?
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21 Answers
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