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Force R not to use exponential notation (e.g. e+10)?
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Best way to stress test a website [duplicate]
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edited Jan 28 '14 at 14:10
Cleanshooter
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Understanding recursion [closed]
...t to children, and @ means the pointer points to null):
5
/ \
4 3
/\ /\
2 1 @ @
/\ /\
@@ @@
If we call sumNode on the root (the node with value 5), we will return:
return root->value + sumNode( root->left ) + sumNode( root->right ) ;
return 5 + sumNode( node-with-...
Find the version of an installed npm package
... in:
projectName@projectVersion /path/to/project/folder
└── grunt@0.4.1
Alternatively, you can just run npm list without passing a package name as an argument to see the versions of all your packages:
├─┬ cli-color@0.1.6
│ └── es5-ext@0.7.1
├── coffee-script@1.3.3
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How to add leading zeros for for-loop in shell? [duplicate]
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Use the following syntax:
$ for i in {01..05}; do echo "$i"; done
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05
Disclaimer: L...
How can I clear or empty a StringBuilder? [duplicate]
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answered Mar 4 '11 at 10:29
Marcus FrödinMarcus Frödin
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Rank items in an array using Python/NumPy, without sorting array twice
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Use slicing on the left-hand side in the last step:
array = numpy.array([4,2,7,1])
temp = array.argsort()
ranks = numpy.empty_like(temp)
ranks[temp] = numpy.arange(len(array))
This avoids sorting twice by inverting the permutation in the last step.
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How is a CRC32 checksum calculated?
...32 is:
x32 + x26 + x23 + x22 + x16 + x12 + x11 + x10 + x8 + x7 + x5 + x4 + x2 + x + 1
Wikipedia
CRC calculation
Or in hex and binary:
0x 01 04 C1 1D B7
1 0000 0100 1100 0001 0001 1101 1011 0111
The highest term (x32) is usually not explicitly written, so it can instead be represente...
How to update gradle in android studio?
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Tricky Google interview question
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Dijkstra derives an eloquent solution in "A Discipline of Programming". He attributes the proble...