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Unique ways to use the Null Coalescing operator [closed]
...he biggest advantage that I find to the ?? operator is that you can easily convert nullable value types to non-nullable types:
int? test = null;
var result = test ?? 0; // result is int, not int?
I frequently use this in Linq queries:
Dictionary<int, int?> PurchaseQuantities;
// PurchaseQu...
Read Post Data submitted to ASP.Net Form
... What about byte arrays? Would you have a string like that and then convert it to a byte array, or what? Im uploading a file to the serve.r
– Fallenreaper
Sep 6 '12 at 19:42
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Unable to generate an explicit migration in entity framework
...s the same EF config in its app.config as the web project. but even when I selected the repository project as startup project it didnt work, but when I set the web project to startup it did.
– JimiSweden
Sep 22 '17 at 15:27
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Django rest framework nested self-referential objects
... by the OP here and at the same time support this solution for dynamically selecting fields to be serialized. Yprez's solution causes an infinite recursion or requires additional complications to avoid the recursion and properly select fields.
– Louis
Jul 24 '...
When should I use Struct vs. OpenStruct?
... = 2;
Here are some common use cases.
OpenStructs can be used to easily convert hashes to one-off objects which respond to all the hash keys.
h = { a: 1, b: 2 }
o = OpenStruct.new(h)
o.a = 1
o.b = 2
Structs can be useful for shorthand class definitions.
class MyClass < Struct.new(:a,:b,:c)...
Handling Dialogs in WPF with MVVM
...ser to an ajax type control.
This is very useful:
<BooleanToVisibilityConverter x:Key="booltoVis" />
as in:
<my:ErrorControl Visibility="{Binding Path=ThereWasAnError, Mode=TwoWay, Converter={StaticResource booltoVis}, UpdateSourceTrigger=PropertyChanged}"/>
Here's how I have one ...
how to use sed, awk, or gawk to print only what is matched?
...
If you want to select lines then strip out the bits you don't want:
egrep 'abc[0-9]+xyz' inputFile | sed -e 's/^.*abc//' -e 's/xyz.*$//'
It basically selects the lines you want with egrep and then uses sed to strip off the bits before an...
SQL Server database backup restore on lower version
...te a script for all objects and use the script to generate database.
select "Schema and Data" - if you want to Take both the
things in to the Backup script file select Schema Only -
if only schema is needed.
Yes, now you have done with the Create Script with Schema and Data of the...
Using port number in Windows host file
...do what you want with generic OS-level configuration - the browser is what selects the port to choose.
So use bookmarks or something like that.
(Some firewall/routing software might allow outbound port redirection, but that doesn't really sound like an appealing option for this.)
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:not(:empty) CSS selector is not working?
I'm having a heck of a time with this particular CSS selector which does not want to work when I add :not(:empty) to it. It seems to work fine with any combination of the other selectors:
...