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Sort a list from another list IDs
...; source,
IEnumerable<TId> order,
Func<T, TId> idSelector)
{
var lookup = source.ToDictionary(idSelector, t => t);
foreach (var id in order)
{
yield return lookup[id];
}
}
Is a generic extension for what you want.
You could use the extension li...
Using isKindOfClass with Swift
I'm trying to pick up a bit of Swift lang and I'm wondering how to convert the following Objective-C into Swift:
5 Answers
...
What strategies and tools are useful for finding memory leaks in .NET?
...ul about the number of objects that we inflated in memory. In the end, we converted all of our data objects over to an "inflate on-demand" (just before a field is requested) in order to reduce memory overhead and increase performance.
EDIT: Here's a further explanation of what I mean by "inflate o...
How to use permission_required decorators on django class-based views
...ort method_decorator
def class_view_decorator(function_decorator):
"""Convert a function based decorator into a class based decorator usable
on class based Views.
Can't subclass the `View` as it breaks inheritance (super in particular),
so we monkey-patch instead.
"""
def ...
Does JSON syntax allow duplicate keys in an object?
...<a>x</a>
<a>y</a>
</object>
When this is converted into JSON, you get the following:
{
"object": {
"a": [
"x",
"y"
]
}
}
A natural mapping from a language that handles what you might call duplicate keys to another, can serve as a potential...
Using Excel OleDb to get sheet names IN SHEET ORDER
...nzip
ZipArchive archive = new ZipArchive(data);
//select the correct file from the archive
ZipArchiveEntry appxmlFile = archive.Entries.SingleOrDefault(e => e.FullName == "docProps/app.xml");
//read the xml
XDocument xdoc = XDocument.L...
String to LocalDate
How can i convert a string to a LocalDate ?
5 Answers
5
...
What differences, if any, between C++03 and C++11 can be detected at run-time?
...:a()) == sizeof(b);
}
Also, the fact that string literals do not anymore convert to char*
bool isCpp0xImpl(...) { return true; }
bool isCpp0xImpl(char*) { return false; }
bool isCpp0x() { return isCpp0xImpl(""); }
I don't know how likely you are to have this working on a real implementation th...
Mysql adding user for remote access
... that you have to create or update a user. look for all your mysql users:
SELECT user,password,host FROM user;
as soon as you got your user set up you should be able to connect like this:
mysql -h localhost -u gmeier -p
hope it helps
...
Difference between open and codecs.open in Python
... not in range(128)
The advice about strings for input/ouput is normally "convert to unicode as early as possible and back to bytestrings as late as possible". Using codecs.open allows you to do the latter very easily.
Just be careful that you are giving it unicode strings and not bytestrings that...