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data.frame rows to a list
...Moreover, all methods I tried with the data.frame function were roughly an order of magnitude slower than the data.table techniques.
data
dat <- vector("list", 50)
for(i in 1:50) dat[[i]] <- iris
dat <- setDF(rbindlist(dat))
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Difference between “include” and “require” in php
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Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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Alternative to google finance api [closed]
...:
https://www.quandl.com/api/v1/datasets/WIKI/AAPL.csv?column=4&sort_order=asc&collapse=quarterly&trim_start=2012-01-01&trim_end=2013-12-31
They support these languages. Their source data comes from Yahoo Finance, Google Finance, NSE, BSE, FSE, HKEX, LSE, SSE, TSE and more (see ...
DTO = ViewModel?
...P.NET MVC, the view invokes Actions on the controller (not a ViewModel) in order to change the Model and View in a stateless manner. Because of this, a DTO shaped to a view is essentially the same as the ViewModel. However, in larger systems with another serialization boundary, a DTO may be benefici...
How can I get form data with JavaScript/jQuery?
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Please also beware that in order to record a value from any form input, the input must have a name attribute.
– Chris - Jr
Oct 27 '17 at 19:37
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How to create an AVD for Android 4.0
...s named "ARM EABI v7a System Image".
This is what you need to download in order to create an Android 4.0 virtual device:
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Python matplotlib multiple bars
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Enum Naming Convention - Plural
...rification, I see nothing wrong with either of the following:
public enum OrderStatus { Pending, Fulfilled, Error };
public class SomeClass {
public OrderStatus OrderStatus { get; set; }
}
or
public enum OrderStatus { Pending, Fulfilled, Error };
public class SomeClass {
public OrderS...
Disable assertions in Python
...tly slow down execution. For some algorithms, checks of this sort can take orders of magnitude longer than the entire program. Think of running a naive but simpler implementation (so less likely to contain errors) of the same algorithm to check correctness. Or a check by exhaustive enumeration of so...
Preferred Java way to ping an HTTP URL for availability
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