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Group by in LINQ
... this case) present for the given key.
For more on how GroupBy works, see my Edulinq post on the topic.
(I've renamed PersonID to PersonId in the above, to follow .NET naming conventions.)
Alternatively, you could use a Lookup:
var carsByPersonId = persons.ToLookup(p => p.PersonId, p => p....
presentViewController and displaying navigation bar
...odally with its root view controller set as the view controller you want:
MyViewController *myViewController = [[MyViewController alloc] initWithNibName:nil bundle:nil];
UINavigationController *navigationController =
[[UINavigationController alloc] initWithRootViewController:myViewController];...
Initializing C# auto-properties [duplicate]
...properties are handy right now, but could certainly be nicer. I don't find myself wanting this sort of initialization as often as a read-only automatically implemented property which could only be set in the constructor and would be backed by a read-only field.
This hasn't happened up until and inc...
jQuery event for images loaded
...replaced dynamically after DOM is already complete) you can use this:
$('#myImage').attr('src', 'image.jpg').on("load", function() {
alert('Image Loaded');
});
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How to stretch the background image to fill a div
I want to set a background image to different divs, but my problems are:
10 Answers
10...
Python str vs unicode types
... how Unicode is useful.
For example, if I'm Latin-1 and I want to explain my encoding of á, I don't need to say:
"I encode that a with an aigu (or however you call that rising bar) as 11100001"
But I can just say:
"I encode U+00E1 as 11100001"
And if I'm UTF-8, I can say:
"Me, in t...
Removing multiple files from a Git repo that have already been deleted from disk
... repo that I have deleted four files from using rm ( not git rm ), and my Git status looks like this:
29 Answers
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Display a view from another controller in ASP.NET MVC
...ry and you're good to go.
If you do return View("~/Views/Wherever/SomeDir/MyView.aspx") You can return any View you'd like.
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How to “grep” for a filename instead of the contents of a file?
...the switch "-rl" and it will search the filename instead of the file. See my post below.
– R M
Feb 6 '18 at 0:24
@alp...
Specifying a custom DateTime format when serializing with Json.Net
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@Koen Zomers - The single quotes you removed from my date formats technically ARE correct, although they are not strictly necessary here. See Literal String Delimiters in the documentation for Custom Date and Time Format Strings. However, the format I quoted as the default...