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Performance surprise with “as” and nullable types
...t about a dozen instructions. This needed to be really efficient back in .NET 1.0 when boxing was common.
Casting to int? takes a lot more work. The value representation of the boxed integer is not compatible with the memory layout of Nullable<int>. A conversion is required and the code is...
ReadOnlyCollection or IEnumerable for exposing member collections?
... why tie yourself to anything stronger?
Original answer
If you're using .NET 3.5, you can avoid making a copy and avoid the simple cast by using a simple call to Skip:
public IEnumerable<Foo> Foos {
get { return foos.Skip(0); }
}
(There are plenty of other options for wrapping trivial...
AngularJS - Trigger when radio button is selected
...alue) {
console.log(value);
}
Here is the jsFiddle: http://jsfiddle.net/ZPcSe/5/
2) Watching the model for changes. This doesn't require anything special on the input level:
<input type="radio" ng-model="value" value="foo">
but in a controller one would have:
$scope.$watch('value',...
Difference Between Select and SelectMany
... (parent, child) => new { parent.Name, child.Number });
Live Demo on .NET Fiddle
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How can I listen to the form submit event in javascript?
...rence
<iframe width="100%" height="100%" src="http://jsfiddle.net/DerekL/wnbo1hq0/show" frameborder="0"></iframe>
AngularJS (1.x)
<form ng-submit="callback()">
$scope.callback = function(){ /*...*/ };
Very straightforward, where $scope is the scope provided by...
Is there a way to 'uniq' by column?
...d 1
Test result:
overflow@domain2.com,2009-11-27 00:58:29.793000000,xx3.net,255.255.255.0
stack2@domain.com,2009-11-27 01:05:47.893000000,xx2.net,127.0.0.1
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List of Timezone ID's for use with FindTimeZoneById() in C#?
...TimeZoneById() ? I can't find a list anywhere and I've looked through the .NET documentation.
13 Answers
...
In Eclipse, what can cause Package Explorer “red-x” error-icon when all Java sources compile without
... showing errorous "Copy of dagskra" directoryr http://www.freeimagehosting.net/uploads/a824304b18.png
It was the hint of reading the "Problems" tab :-) that turned me into the right direction, so I'm selecting that answer as the accepted answer because this is what I needed:
Snapshot from Problems...
How to access random item in list?
...
Beautiful. IN ASP.NET MVC 4.5, uisng a list, I had to change this to: list.OrderBy(x => Guid.NewGuid()).FirstOrDefault();
– Andy Brown
Sep 3 '14 at 9:56
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Getting started with F# [closed]
...DN forum
F# on fpish
Blogging/publishing
F# Community Blogs
fpound.net aggregator
F# on twitter
F# on github (fsharpx)
F# team blog
Meetup Groups
New York City F# User Group
Chicago F# Users
F# Seattle User Group
The San Francisco Bay Area F# User Group
F#unctional Londoners Meetup Gr...