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How to get row from R data.frame
...is, for example:
#Add your data
x <- structure(list(A = c(5, 3.5, 3.25, 4.25, 1.5 ),
B = c(4.25, 4, 4, 4.5, 4.5 ),
C = c(4.5, 2.5, 4, 2.25, 3 )
),
.Names = c("A", "B", "C"),
class = "da...
Could not load file or assembly 'System.Web.Http 4.0.0 after update from 2012 to 2013
...to-upgrade-an-aspnet-mvc-4-and-web-api-project-to-aspnet-mvc-5-and-web-api-2
28 Answers
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Regular expression to match numbers with or without commas and decimals in text
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293
EDIT: Since this has gotten a lot of views, let me start by giving everybody what they Googled...
How does java do modulus calculations with negative numbers?
... |
edited Dec 9 '10 at 23:18
answered Dec 9 '10 at 22:00
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Initializing a two dimensional std::vector
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208
Use the std::vector::vector(count, value) constructor that accepts an initial size and a defau...
Generator Expressions vs. List Comprehension
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294
John's answer is good (that list comprehensions are better when you want to iterate over somet...
biggest integer that can be stored in a double
...n IEEE 64-bit doubles without losing precision. An IEEE 64-bit double has 52 bits of mantissa, so I think it's 253:
253 + 1 cannot be stored, because the 1 at the start and the 1 at the end have too many zeros in between.
Anything less than 253 can be stored, with 52 bits explicitly stored in the...
Patterns for handling batch operations in REST web services?
...o delete several messages at once.
DELETE /mail?&id=0&id=1&id=2
It's a little more complicated to batch update partial resources, or resource attributes. That is, update each markedAsRead attribute. Basically, instead of treating the attribute as part of each resource, you treat it as...
How to trim leading and trailing white spaces of a string?
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269
For example,
package main
import (
"fmt"
"strings"
)
func main() {
s := "\t Hel...
Convert a list of data frames into one data frame
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answered Feb 27 '18 at 20:05
joekliegjoeklieg
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