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How can I efficiently select a Standard Library container in C++11?
...arch tag.
Ordering
If you need a container of items to always be sorted based on a particular comparison operation, you can use a set. Or a multi_set if you need multiple items to have the same value.
Or you can use a sorted std::vector, but you'll have to keep it sorted.
Stability
When iterat...
What's the best online payment processing solution? [closed]
...u be selling at what cost. The pricing models of all the SCPS providers is based around this equation. This dictates the economics of using the service, which is nearly always the most important factor.
For example, in the UK securetrading.net have a large annual fee and high minimum transaction val...
Sorting a tab delimited file
...transition so tab should work just fine.
However, the columns are indexed base 1 and base 0 so you probably want
sort -k4nr file.txt
to sort file.txt by column 4 numerically in reverse order. (Though the data in the question has even 5 fields so the last field would be index 5.)
...
Rotating x axis labels in R for barplot
...is should be the accepted answer. Works perfectly using a parameter of the base barplot function used in the question.
– jwhaley58
Nov 8 '16 at 15:06
1
...
Shortcut for creating single item list in C#
...
A different answer to my earlier one, based on exposure to the Google Java Collections:
public static class Lists
{
public static List<T> Of<T>(T item)
{
return new List<T> { item };
}
}
Then:
List<string> x = Lists...
How do I get the current absolute URL in Ruby on Rails?
... method, but if you're curious, the implementation is:
def original_url
base_url + original_fullpath
end
For Rails 3:
You can write "#{request.protocol}#{request.host_with_port}#{request.fullpath}", since request.url is now deprecated.
For Rails 2:
You can write request.url instead of r...
Compute a confidence interval from sample data
...rd deviation via NormalDist.mean and NormalDist.stdev.
Compute the Z-score based on the standard normal distribution (represented by NormalDist()) for the given confidence using the inverse of the cumulative distribution function (inv_cdf).
Produces the confidence interval based on the sample's stan...
What's the difference between JavaScript and JScript?
...s. One beautiful day, ECMA international came and said: let's make engines based on common standard, let's make something general to make life more easy and fun, and they made that standard.
Since all browser providers make their JavaScript engines based on ECMAScript core (standard).
For example, ...
Understanding what 'type' keyword does in Scala
...e-checking is performed.
But you can also have something like this
trait Base {
type T
def method: T
}
class Implementation extends Base {
type T = Int
def method: T = 42
}
Like any other member of a class, type members can also be abstract (you just don't specify what their value act...
淘宝网采用什么技术架构来实现网站高负载的 - 更多技术 - 清泛网 - 专注C/C...
...时候我们就需要避免采用数据的ACID事 务策略，转而采用BASE事 务策略，BASE事 务策略是基本可用性，事务软状态以及最终一致性的缩写，通过BASE事务策略，我们可以通过最终一致性来提升系统的可用性，这也是目前很多NOSQL产品...