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How do I get the list of keys in a Dictionary?
...g, int> data = new Dictionary<string, int>();
data.Add("abc", 123);
data.Add("def", 456);
foreach (string key in data.Keys)
{
Console.WriteLine(key);
}
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...
TypeError: ObjectId('') is not JSON serializable
...
123
You should define you own JSONEncoder and using it:
import json
from bson import ObjectId
cl...
fatal: The current branch master has no upstream branch
...n issue.
That depends on your url (ssh as in 'git@github.com/yourRepo, or https as in https://github.com/You/YourRepo)
For https url:
If your account is protected by the two-factor authentication, your regular password won't work (for https url), as explained here or here.
Same problem if your...
What is a plain English explanation of “Big O” notation?
...ned, you can mouse over the spoilers for minor sidenotes]
(with credit to https://stackoverflow.com/a/487292/711085 )
(technically the constant factor could maybe matter in some more esoteric examples, but I've phrased things above (e.g. in log(N)) such that it doesn't)
These are the bread-and-bu...
Double vs single quotes
...ring:
This regex pattern will work because passed within single-quotes:
"123 ABC".match('\d')
=> #<MatchData "1">
This regex pattern will fail because passed within double-quotes (you would have to double-escape it to get it to work):
"123 ABC".match("\d")
=> nil
...
What are the nuances of scope prototypal / prototypical inheritance in AngularJS?
...er:
JavaScript Prototypal Inheritance
Also placed on the AngularJS wiki: https://github.com/angular/angular.js/wiki/Understanding-Scopes
It is important to first have a solid understanding of prototypal inheritance, especially if you are coming from a server-side background and you are more famil...
C++使用OLE/COM高速读写EXCEL的源码 - C/C++ - 清泛网 - 专注C/C++及内核技术
...OleVariant)(sVal));
write_range.ReleaseDispatch();
}
}//for
//https://www.tsingfun.com
book.SaveAs(COleVariant(_T("d:\\2.xlsx")),covOptional,covOptional,
covOptional,covOptional,covOptional,0,
covOptional,covOptional,covOptional,covOptional,covOptional);
book.put_Sa...
How do I get a list of all subdomains of a domain? [closed]
...
Correct command should be: dig @123.456.789.123 DOMAIN.COM -t axfr
– Superbiji
Jan 8 '14 at 7:48
8
...
How to play audio?
...ile.mp3');
audio.play();
function play() {
var audio = new Audio('https://interactive-examples.mdn.mozilla.net/media/examples/t-rex-roar.mp3');
audio.play();
}
<button onclick="play()">Play Audio</button>
This uses the HTMLAudioElement interface, which plays audio th...
How to filter None's out of List[Option]?
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...