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What's the difference between django OneToOneField and ForeignKey?
...Guide to Django:
OneToOneField
A one-to-one relationship. Conceptually, this is similar to a ForeignKey with unique=True, but the "reverse" side of the relation will directly return a single object.
In contrast to the OneToOneField "reverse" relation, a ForeignKey "reverse" relation retur...
What's the difference between HEAD, working tree and index, in Git?
...you run git checkout ref it points HEAD to the ref you’ve designated and extracts files from it. When you run git commit it creates a new commit object, which becomes a child of current HEAD. Normally HEAD points to one of the heads, so everything works out just fine.
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Count how many files in directory PHP
...n you include other directories within that directories and so on to count all files and exclude directories from the count?
– The Bumpaster
Jul 2 '16 at 13:40
1
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How to override trait function and call it from the overridden function?
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An alternative approach if interested - with an extra intermediate class to use the normal OOO way. This simplifies the usage with parent::methodname
trait A {
function calc($v) {
return $v+1;
}
}
// an intermediate class that just uses the trait
class I...
Why can't decimal numbers be represented exactly in binary?
...1/3, 1/9, 1/27, or any rational in decimal notation. We do it by adding an extra symbol. For example, a line over the digits that repeat in the decimal expansion of the number. What we need to represent decimal numbers as a sequence of binary numbers are 1) a sequence of binary numbers, 2) a radix p...
How are people managing authentication in Go? [closed]
...method depends on short-lived Access tokens, The bearer token is a cryptic string, usually generated by the server in response to a login request. so when the app receives the user requests it reads the authorization and validates the token to authenticate the user.
However, I'd recommend go-guard...
Why are only a few video games written in Java? [closed]
...ot just referring to tool programming. For most games, you don't need that extra bit of performance you get from C++, including 3D games, and if you're writing it all from scratch, it can make perfect sense to use something like XNA - in fact, there's a good chance it will.
As far as commercial gam...
std::function and std::bind: what are they, and when should they be used?
...nd to get g:
auto g = bind(f, _1, 4, _2);
This is more concise than actually writing a functor class to do it.
There are further examples in the article you link to. You generally use it when you need to pass a functor to some algorithm. You have a function or functor that almost does the job yo...
Custom Cell Row Height setting in storyboard is not responding
...l. The code that is posted in this answer works. Either there is something extra going on in swift, there's something not right in the swift conversion, or are trying to solve a different problem that this question/answer targets.
– JosephH
Jun 22 '15 at 17:28
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Using MySQL with Entity Framework [closed]
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You would need a mapping provider for MySQL. That is an extra thing the Entity Framework needs to make the magic happen. This blog talks about other mapping providers besides the one Microsoft is supplying. I haven't found any mentionings of MySQL.
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