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LINQ - Left Join, Group By, and Count
...into j1
from j2 in j1.DefaultIfEmpty()
group j2 by p.ParentId into grouped
select new { ParentId = grouped.Key, Count = grouped.Count(t=>t.ChildId != null) }
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The project cannot be built until the build path errors are resolved.
...ng Project > Clean... from the menu? This will force a new build on the selected projects in Eclipse.
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EC2 instance has no public DNS
...ns:
Go to console.aws.amazon.com
Go To Services -> VPC
Open Your VPCs
select your VPC connected to your EC2 and
select Actions => Edit DNS Hostnames
---> Change DNS hostnames: to YES
Hope this helps!
Cheers
sha...
Do I need to close() both FileReader and BufferedReader?
...der.close() closes the underlying reader. Its description is simply copied from Reader.close(). This may be the actual behavior in practice, but it's not documented.
– John Kugelman
Mar 30 '15 at 22:12
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Disable migrations when running unit tests in Django 1.7
...igrate" command treats
an app as unmigrated, and creates tables directly from the models just
like syncdb did in 1.6. I defined a new settings module just for unit
tests called "settings_test.py", which imports * from the main
settings module and adds this line:
MIGRATION_MODULES = {"my...
How do you scroll up/down on the Linux console?
... Cool, thanks! How would you go about setting the scrollback size from a native ('real') terminal?
– starbeamrainbowlabs
Jan 3 '18 at 19:18
2
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Check if option is selected with jQuery, if not select a default
Using jQuery, how do you check if there is an option selected in a select menu, and if not, assign one of the options as selected.
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How do I test a camera in the iPhone simulator?
...ctions how to downgrade your device: iclarified.com/31004/how-to-downgrade-from-ios-7-beta-to-ios-6
– knagode
Jun 18 '13 at 15:25
5
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Why am I getting ibtool failed with exit code 255?
...n xib(nib) as Source Code (Right click on the xib Open As > Source Code from Xcode or open it using TextEdit)
remove this appearanceType="aqua"
save and open using Xcode
For more explain use this article, it help us to fix the issue.
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Reading Excel files from C#
...ed Properties=Excel 8.0;", fileName);
var adapter = new OleDbDataAdapter("SELECT * FROM [workSheetNameHere$]", connectionString);
var ds = new DataSet();
adapter.Fill(ds, "anyNameHere");
DataTable data = ds.Tables["anyNameHere"];
This is what I usually use. It is a little different because I u...