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The cast to value type 'Int32' failed because the materialized value is null
... this expression can indeed return null, even though Sum() returns an int. Then we use the normal ?? operator to handle the null case.
Based on this answer, I wrote a blog post with details for both LINQ to SQL and LINQ to Entities.
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How to design a database for User Defined Fields?
...rm some of the aggregating and other statistical analysis on the UDF data, then join that result to the master table via foreign key to get the non-aggregated attributes.
You can use table/column names that
reflect what the data actually is.
You have complete control to use data types,
check constr...
Removing duplicates from a list of lists
...application: if you really just have six-element lists with two duplicates then any solution is likely to be fast enough and you should go with the clearest code.
– Paul Stephenson
Feb 6 '10 at 18:26
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The “unexpected ++” error in jslint [duplicate]
What is the best practice for that then?
8 Answers
8
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Why unsigned integer is not available in PostgreSQL?
...returning NULL evaluates to TRUE, so if you really wants to prevent NULLs, then use NOT NULL instead (or in addition to CHECK).
– flaviovs
Mar 28 '19 at 20:53
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Disable Visual Studio code formatting in Razor
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I would up-vote you more then one time, This is a correct response for vs version 2013 up1 and newer.
– Erik Simonic
Jan 24 '16 at 11:33
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How to put a UserControl into Visual Studio toolBox
...oolboxPopulate which on a fresh install defaults to False. Set it true and then rebuild your solution.
Hey presto they user controls in you solution should be automatically added to the toolbox.
You might have to reload the solution as well.
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Loading existing .html file with android WebView
...istake now, twice. It's not intuitive! First make a folder called "assets" then refer to it by "android_asset" (no "s")?? It's the platform that's stupid, IMO :P
– richtaur
Jan 12 '11 at 0:49
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How do I use disk caching in Picasso?
...0.0'
compile 'com.jakewharton.picasso:picasso2-okhttp3-downloader:1.1.0'
Then make a class extending Application
import android.app.Application;
import com.jakewharton.picasso.OkHttp3Downloader;
import com.squareup.picasso.Picasso;
public class Global extends Application {
@Override
pub...
Is there a better way of writing v = (v == 0 ? 1 : 0); [closed]
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If you save 15 characters by writing this but then use 40 characters of comments to explain it, is it really an improvement?
– Michael Myers♦
Aug 2 '11 at 15:49
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