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Is is possible to check if an object is already attached to a data context in Entity Framework?
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Here's what I ended up with, which works very nicely:
public static void AttachToOrGet<T>(this ObjectContext context, string entitySetName, ref T entity)
where T : IEntityWithKey
{
ObjectStateEntry entry;
// Track whether we need ...
TSQL Pivot without aggregate function
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You can use the MAX aggregate, it would still work. MAX of one value = that value..
In this case, you could also self join 5 times on customerid, filter by dbColumnName per table reference. It may work out better.
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Is there a way to 'uniq' by column?
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sort -u -t, -k1,1 file
-u for unique
-t, so comma is the delimiter
-k1,1 for the key field 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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What is the proper way to display the full InnerException?
... @AlexStephens you are right, but only if you have an implicit casting "to string" for some reason, like preceding string: "bla" + exception
– oo_dev
Jun 25 '18 at 11:17
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Bash conditionals: how to “and” expressions? (if [ ! -z $VAR && -e $VAR ])
..." tests. I wanted to make sure an argument existed which was working well with [ -e $VAR ] , but it turns out that was also evaluating as true on an empty string; which I do not want.
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Shortcuts in Objective-C to concatenate NSStrings
...ngString: ) string concatenation in Objective-C, or shortcuts for working with NSString in general?
29 Answers
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GitHub README.md center image
I've been looking at the markdown syntax used in GitHub for a while but except resizing an image to the extent of the README.md page, I can't figure out how to center an image in it.
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Android customized button; changing text color
...m/apk/res/android">
<!-- Focused and not pressed -->
<item android:state_focused="true"
android:state_pressed="false"
android:color="#ffffff" />
<!-- Focused and pressed -->
<item android:state_focused="true"
android:state_pr...
Trim string in JavaScript?
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edited Aug 30 '19 at 12:44
Samuel Dauzon
7,9951111 gold badges4444 silver badges7777 bronze badges
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npm ERR cb() never called
I have a Node.js app hosted on Heroku. Every time I do a git push heroku I get the following error:
39 Answers
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