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Why would iterating over a List be faster than indexing through it?
...icient. For larger LinkedList -yes, for smaller it can work faster REVERSE_THRESHOLD is set 18 in java.util.Collections, it's weird to see so upvoted answer without the remark.
– bestsss
May 8 '12 at 9:28
...
RESTfully design /login or /register resources?
...a GET request for logging out.
(from http://en.wikipedia.org/wiki/Hypertext_Transfer_Protocol#Safe_methods)
Some methods (for example, HEAD, GET, OPTIONS and TRACE) are defined as safe, which means they are intended only for information retrieval and should not change the state of the server. In ot...
What are Scala context and view bounds?
...like they were Scala collections. For example:
def f[CC <% Traversable[_]](a: CC, b: CC): CC = if (a.size < b.size) a else b
If one tried to do this without view bounds, the return type of a String would be a WrappedString (Scala 2.8), and similarly for Array.
The same thing happens even i...
In a storyboard, how do I make a custom cell for use with multiple controllers?
... bundle: nil), forCellReuseIdentifier: reuseIdentifier)
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier:reuseIdentifier, for: indexPath) as! CustomCell
return cell!
}
...
Add legend to ggplot2 line plot
...rong. Here's how I would plot your data:
##Subset the necessary columns
dd_sub = datos[,c(20, 2,3,5)]
##Then rearrange your data frame
library(reshape2)
dd = melt(dd_sub, id=c("fecha"))
All that's left is a simple ggplot command:
ggplot(dd) + geom_line(aes(x=fecha, y=value, colour=variable)) +
...
Entity Framework VS LINQ to SQL VS ADO.NET with stored procedures? [closed]
... the only one (NHibernate, ActiveRecord)
http://en.wikipedia.org/wiki/List_of_object-relational_mapping_software
to address the specific questions:
Depends on the quality of the O/RM solution, L2S is pretty good at generating SQL
This is normally much faster using an O/RM once you grok the proce...
Is it better to call ToList() or ToArray() in LINQ queries?
...; keeps track on whether collection was modified, there is a private field _version in this class which is changed everytime the List<> is updated.)
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Nginx no-www to www and www to no-www
...separate server for example.org":
server {
listen 80;
server_name example.com;
return 301 http://www.example.com$request_uri;
}
server {
listen 80;
server_name www.example.com;
...
}
HTTPS Solution
For those who want a solution including https://...
...
No == operator found while comparing structs in C++
...r==(const MyStruct1& lhs, const MyStruct1& rhs)
{
return lhs.my_struct2 == rhs.my_struct2 &&
lhs.an_int == rhs.an_int;
}
Note that this needs an operator== for MyStruct2 too.
Implications of this implementation, and alternatives, are discussed under the heading ...
MySQL: @variable vs. variable. What's the difference?
...ameters and declare the local variables:
DELIMITER //
CREATE PROCEDURE prc_test (var INT)
BEGIN
DECLARE var2 INT;
SET var2 = 1;
SELECT var2;
END;
//
DELIMITER ;
These variables are not prepended with any prefixes.
The difference between a procedure variable and a session-specific us...