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Calculating Pearson correlation and significance in Python
...nable for datasets larger than 500 or so.
Parameters
----------
x : 1D array
y : 1D array the same length as x
Returns
-------
(Pearson's correlation coefficient,
2-tailed p-value)
References
----------
http://www.statsoft.com/textbook/glosp.html#Pearson%20Correlation
...
How does one create an InputStream from a String? [duplicate]
...
Here you go:
InputStream is = new ByteArrayInputStream( myString.getBytes() );
Update For multi-byte support use (thanks to Aaron Waibel's comment):
InputStream is = new ByteArrayInputStream(Charset.forName("UTF-16").encode(myString).array());
Please see Byt...
Why is a boolean 1 byte and not 1 bit of size?
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@six: You can load the beginning of an array in one register and then the relative "bit offset" into a second. The bit offset is not limited to "within one byte", it can be any 32 bit number.
– fredoverflow
Jan 7 '11 at 16:15...
Convert Python dictionary to JSON array
...ackoverflow.com%2fquestions%2f14661051%2fconvert-python-dictionary-to-json-array%23new-answer', 'question_page');
}
);
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Name
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Responding with a JSON object in Node.js (converting object/array to JSON string)
...nse.json({
anObject: { item1: "item1val", item2: "item2val" },
anArray: ["item1", "item2"],
another: "item"
});
}
Alternatively:
function random(response) {
console.log("Request handler random was called.");
response.writeHead(200, {"Content-Type": "application/json"});
var...
Multiple inheritance/prototypes in JavaScript
...ch initially is null.
The setPrototypeOf trap could be added and accept an array of objects, which would replace the prototypes. This is left as an exercice for the reader. Here I just let it modify the prototype of the target, which is not much useful because no trap uses the target.
The deleteProp...
How can I get nth element from a list?
...For O(1) index-based access there are more efficient alternatives, such as arrays or vectors.
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Iterate through object properties
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As of JavaScript 1.8.5 you can use Object.keys(obj) to get an Array of properties defined on the object itself (the ones that return true for obj.hasOwnProperty(key)).
Object.keys(obj).forEach(function(key,index) {
// key: the name of the object key
// index: the ordinal positi...
Extract substring in Bash
..., and parameter is not @ and not an indexed or associative
array, it is interpreted as an offset from the end of the value
of parameter rather than a number of characters, and the expan‐
sion is the characters between the two offsets. If parameter is
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Legality of COW std::string implementation in C++11
...ntially be used to write into s, then s2 goes out of scope, destroying the array pointed to by p).
The C++03 standard explicitly permits that behaviour in 21.3 [lib.basic.string] p5 where it says that subsequent to a call to data() the first call to operator[]() may invalidate pointers, references ...