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LINQ Single vs First
...if it finds more than one record matching the criteria.
First will always select the first record from the list. If the query returns just 1 record, you can go with First().
Both will throw an InvalidOperationException exception if the collection is empty.
Alternatively you can use SingleOrDefau...
Serialize Class containing Dictionary member
...!= null)
{
list.AddRange(SearchCategories.Keys.Select(key => new SerializeableKeyValue<int, string>() {Key = key, Value = SearchCategories[key]}));
}
return list.ToArray();
}
set
{
SearchCategories = new...
How to allow download of .json file with ASP.NET
...you need to add json file extension type in MIME Types
Method 1
Go to IIS, Select your application and Find MIME Types
Click on Add from Right panel
File Name Extension = .json
MIME Type = application/json
After adding .json file type in MIME Types, Restart IIS and try to access json file
Method ...
Run a string as a command within a Bash script
...rameters so I ended up with something like:
my_exe ()
{
mysql -sN -e "select $1 from heat.stack where heat.stack.name=\"$2\";"
}
This is something I use to monitor openstack heat stack creation. In this case I expect two conditions, an action 'CREATE' and a status 'COMPLETE' on a stack named ...
jQuery UI datepicker change event not caught by KnockoutJS
...
$('.datepicker').datepicker({ onSelect: function(dateText) { $("#date_in").trigger("change"); } });
– elsadek
Jul 20 '14 at 5:40
...
android View not attached to window manager
...using Eclipse. Right click in the margin just to the left of your code and select "Toggle breakpoint". You then need to run your application in debug mode, the button that looks like a green insect next to the normal run button. When the program hits a breakpoint, Eclipse will switch to the debug pe...
Take a full page screenshot with Firefox on the command-line
...
Just FYI you can also select DOM notes through the inspector and then right-click -> screenshot node. This is super helpful when you want to screenshot a section of a page.
– Tom
Jan 21 '16 at 22:43
...
How to check if a string starts with a specified string? [duplicate]
... to compare start of strings, not find, compare. Don't know why this isn't selected answer or have so few upvotes.
– Bsienn
Nov 13 '19 at 7:47
...
What's the best way to cancel event propagation between nested ng-click calls?
...nted to handle mouse clicks with or without pressing the Ctrl key. To stop selection (and highlight) of HTML elements in the browser (IE 11 in my case) when the user clicks various items with holding down the Ctrl key, I had to use the ng-mousedown event and cancelling the default behavior via $even...
possibly undefined macro: AC_MSG_ERROR
...
Does autoreconf not select the proper libtoolize on Darwin?
– William Pursell
Jan 11 '12 at 15:04
...