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How does the “this” keyword work?
...l execution context, ThisBinding is set to the global object, window (§10.4.1.1).
2. Entering eval code
…by a direct call to eval()
ThisBinding is left unchanged; it is the same value as the ThisBinding of the calling execution context (§10.4.2 (2)(a)).
…if not by a direct call to eval()
Thi...
Inserting multiple rows in a single SQL query? [duplicate]
I have multiple set of data to insert at once, say 4 rows. My table has three columns: Person , Id and Office .
4 Answe...
ValueError: setting an array element with a sequence
...d like a multi-dimensional array. For example
numpy.array([[1,2], [2, 3, 4]])
or
numpy.array([[1,2], [2, [3, 4]]])
will yield this error message, because the shape of the input list isn't a (generalised) "box" that can be turned into a multidimensional array. So probably UnFilteredDuringExSu...
What is tail recursion?
...function that adds the first N natural numbers. (e.g. sum(5) = 1 + 2 + 3 + 4 + 5 = 15).
Here is a simple JavaScript implementation that uses recursion:
function recsum(x) {
if (x === 1) {
return x;
} else {
return x + recsum(x - 1);
}
}
If you called recsum(5), this i...
How can I beautify JavaScript code using Command Line?
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64
First, pick your favorite Javascript based Pretty Print/Beautifier. I prefer the one at http://...
Creating an empty Pandas DataFrame, then filling it?
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How to check if a file exists in the Documents directory in Swift?
...
Swift 4.x version
let path = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0] as String
let url = NSURL(fileURLWithPath: path)
if let pathComponent = url.appendingPathComponent("nameOfF...
Enterprise Library Unity vs Other IoC Containers [closed]
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234
I am preparing a presentation for a usergroup. As such I just went through a bunch of them. Nam...
Add leading zeroes/0's to existing Excel values to certain length
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4
OMG! Perfect! You learn something new every single day. I even have multiple dog-eared Excel books and never came across this -- will use ...
JUnit 4 compare Sets
...ssert the equality of Collection elements, specifically a Set in JUnit 4?
9 Answers
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