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How to render and append sub-views in Backbone.js
...lly use Solution 1, for a couple of reasons:
A lot of my views rely on already being in the DOM in their render() method
When the outer view is re-rendered, views don't have to be re-initialized, which re-initialization can cause memory leaks and also cause freaky issues with existing bindings
K...
Does MySQL ignore null values on unique constraints?
...UNIQUE?" Or "How to only allow one UNIQUE NULL value?"
The question has already been answered, yes you can have duplicate NULL values while using the UNIQUE index.
Since I stumbled upon this answer while searching for "how to allow one UNIQUE NULL value." For anyone else who may stumble upon this ...
Argparse: Required arguments listed under “optional arguments”?
...
@Judge i would recommend reading this pymotw.com/3/argparse/#mutually-exclusive-options
– Peter Moore
Apr 23 at 13:16
1
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Is it possible to rotate a drawable in the xml description?
...n't incur much overhead, and makes for clear, explicit code (although I've read that hand modifying vector assets should be avoided, I'd rather deal with the overhead of updating a couple of files than having transformations on one):
Note: Android Studio is a great source for vector assets.
res\va...
When to use an interface instead of an abstract class and vice versa?
... bool compare(object lhs, object rhs);
}
class QuickSorter
{
private readonly IComparator comparator;
public QuickSorter(IComparator comparator)
{
this.comparator = comparator;
}
public void Sort(object[] items)
{
// usual code but call comparator.Compare()...
400 BAD request HTTP error code meaning?
...
This answer covers a lot of this, though I haven't read through all of the charts yet stackoverflow.com/a/34324179/16959
– Jason Sperske
Nov 1 '17 at 21:37
...
Can Java 8 code be compiled to run on Java 7 JVM?
...code with Java 7, so that's also compatible. You can get access to them by reading the bytecode of the method and looking at the local variable names in the method's debug information. For example the Spring Framework does exactly that to implement @PathVariable, so there is probably a library metho...
What is the recommended way to delete a large number of items from DynamoDB?
...able. Items that have expired and not been deleted will
still show up in reads, queries, and scans. These items can still be
updated and successful updates to change or remove the expiration
attribute will be honored.
https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/TTL.html
...
A CORS POST request works from plain JavaScript, but why not with jQuery?
...ers or allow the use of credentials (username, password, or cookies, etc), read on.
I think I found the answer! (4 hours and a lot of cursing later)
//This does not work!!
Access-Control-Allow-Headers: *
You need to manually specify all the headers you will accept (at least that was the case f...
Finding three elements in an array whose sum is closest to a given number
...wers, not the closest answer, as the title mentions. As an exercise to the reader, I'll let you figure out how to make it work with distinct elements only (but it's a very simple change) and exact answers (which is also a simple change).
...