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Understanding exactly when a data.table is a reference to (vs a copy of) another data.table
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143
Yes, it's subassignment in R using <- (or = or ->) that makes a copy of the whole object...
Pandas: create two new columns in a dataframe with values calculated from a pre-existing column
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119
I'd just use zip:
In [1]: from pandas import *
In [2]: def calculate(x):
...: return ...
How to identify all stored procedures referring a particular table
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Positioning MKMapView to show multiple annotations at once
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answered Mar 22 '14 at 1:27
Code CommanderCode Commander
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Can I zip more than two lists together in Scala?
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Iterating Through a Dictionary in Swift
...en would stay at 25.
let interestingNumbers = [
"Prime": [2, 3, 5, 7, 11, 13],
"Fibonacci": [1, 1, 2, 3, 5, 8],
"Square": [1, 4, 9, 16, 25]
]
var largest = 0
for (kind, numbers) in interestingNumbers {
println("kind: \(kind)")
for number in numbers {
if number > large...
Working with $scope.$emit and $scope.$on
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Value of i for (i == -i && i != 0) to return true in Java
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126
The only int value for which it works is Integer.MIN_VALUE.
It's because integers are negate...
The static keyword and its various uses in C++
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150
Variables:
static variables exist for the "lifetime" of the translation unit that it's defined...
Python != operation vs “is not”
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310
== is an equality test. It checks whether the right hand side and the left hand side are equal ...