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Entity Framework code first unique column
...ength on your model:
[StringLength(450)]
Your model will look like this now in EF CF 6.1+:
public class User
{
public int UserId{get;set;}
[StringLength(450)]
[Index(IsUnique=true)]
public string UserName{get;set;}
}
Update:
if you use Fluent:
public class UserMap : EntityTypeC...
How can I transition height: 0; to height: auto; using CSS?
...
Now it does: jsfiddle.net/gNDX3/1 Basically you need to style your elements according to what you need. There is no silver bullet or widget like behavior in CSS/HTML.
– dotnetCarpenter
A...
How to return multiple lines JSX in another return statement in React?
...
return (
React.DOM.h3(...)
React.DOM.p(...)
)
})}
It should now be clear that the second snippet doesn't really make sense (you can't return more than one value in JS). You have to either wrap it in another element (most likely what you'd want, that way you can also provide a valid ke...
Prevent redirection of Xmlhttprequest
...aware that the requests made via this API are not cancelable yet. They are now.
As for XMLHttpRequest, you can HEAD the server and inspect whether the URL has changed:
var http = new XMLHttpRequest();
http.open('HEAD', '/the/url');
http.onreadystatechange = function() {
if (this.readyState ===...
Aligning text and image on UIButton with imageEdgeInsets and titleEdgeInsets
... self.titleEdgeInsets = UIEdgeInsetsMake(0, spacing, 0, 0);
}
@end
So now all I have to do is:
[button centerButtonAndImageWithSpacing:10];
And I get what I need every time. No more messing with the edge insets manually.
EDIT: Swapping Image and Text
In response to @Javal in comments
Usi...
favicon.png vs favicon.ico - why should I use PNG instead of ICO?
...iple resolutions including full alpha channel. By the way, 1-bit alpha is known as "transparency". The only real limit ICO has had was with icons larger or equal to 256 in length (any direction), though it's been overcome several times.
– Christian
Nov 2 '10 at...
Finding duplicates in O(n) time and O(1) space
...will it work when i arrives at the home location, m? Yes it will, because now, even though at this new i we find that the 1st half of the if condition, A[i] != i, is true, the 2nd half tests whether the location it points to is a home location and finds that it isn't. In this situation we no longe...
How do I escape reserved words used as column names? MySQL/Create Table
...escape) works for keywords in Cassandra's CQL as well. A bit off-topic, I know, but this thread surfaced in a Cassandra-specific search.
– Godfrey Duke
Feb 26 '16 at 22:44
...
AWS Difference between a snapshot and AMI
...
I don't know what you mean by "backed up an AMI image".
– Eric Hammond
Jul 13 '13 at 19:22
8
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Using str_replace so that it only acts on the first match?
...
Edit: both answers have been updated and are now correct. I'll leave the answer since the function timings are still useful.
The answers by 'zombat' and 'too much php' are unfortunately not correct. This is a revision to the answer zombat posted (as I don't have enough...