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LINQ - Full Outer Join
...
I don't know if this covers all cases, logically it seems correct. The idea is to take a left outer join and right outer join then take the union of the results.
var firstNames = new[]
{
new { ID = 1, Name = "John" },
new { ID = 2, Name = "Sue" },
};
var lastNames = new[]
{
new { ID...
What is Ember RunLoop and how does it work?
... silly to asks and dependant on many things but I am looking for a general idea, or maybe if there is a minimum or maximum time a runloop may take)
At no point will the RunLoop ever keep track of how much time it's taking to propagate all the changes through the system and then halt the RunLoop aft...
“Keep Me Logged In” - the best approach
...y Notice: Basing the cookie off an MD5 hash of deterministic data is a bad idea; it's better to use a random token derived from a CSPRNG. See ircmaxell's answer to this question for a more secure approach.
Usually I do something like this:
User logs in with 'keep me logged in'
Create session ...
How is the fork/join framework better than a thread pool?
...oonas points out, tasks are not necessarily pre-allocated to a thread. The idea of fork/join is that a thread can choose to split a task into multiple sub-pieces. So to restate the above:
We have two tasks (ab) and (cd) which take 2 and 11 seconds respectively. Thread 1 starts to execute ab and spl...
How to make a great R reproducible example
..., list2 = my.df[3], list3 = letters)
The data structure should mimic the idea of writer's problem and not the exact verbatim structure. I really appreciate it when variables don't overwrite my own variables or god forbid, functions (like df).
Alternatively, one could cut a few corners and point t...
Why is the order in dictionaries and sets arbitrary?
...er up-to-date efficiently. See the post by Raymond Hettinger outlining the idea. OrderedDict objects have other advantages, such as being re-orderable.
If you wanted an ordered set, you can install the oset package; it works on Python 2.5 and up.
...
Reset/remove CSS styles for element only
...own this document, so you cannot change existing style rules. You have no idea what the style sheets could be, or what they may change to.
Use cases for this are when you are providing a displayable component for unknown 3rd party websites to use. Examples of this would be:
An ad tag
Building a...
When to Redis? When to MongoDB? [closed]
...he hash to another hash (something like key: [id of second hash]). Another idea would be to store it as JSON, which seems counter-intuitive to most people with a *SQL-background.
If you need really high performance.
Beating the performance Redis provides is nearly impossible. Imagine you database b...
'printf' vs. 'cout' in C++
...ould look like %2$s oru %1$d.\n. Now, how to do it in C++? Well, I have no idea. I guess you can make fake iostream which constructs printf that you can pass to gettext, or something, for purposes of translation. Of course, $ is not C standard, but it's so common that it's safe to use in my opinion....
What's the best way to communicate between view controllers?
...
I see your problem..
What has happened is that someone has confused idea of MVC architecture.
MVC has three parts.. models, views, and controllers.. The stated problem seems to have combined two of them for no good reason. views and controllers are seperate pieces of logic.
so... you do not...