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How do I bind a WPF DataGrid to a variable number of columns?
My WPF application generates sets of data which may have a different number of columns each time. Included in the output is a description of each column that will be used to apply formatting. A simplified version of the output might be something like:
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SQL Server: Make all UPPER case to Proper Case/Title Case
...;
declare @Ret varchar(8000);
declare @i int;
declare @c char(1);
if @Text is null
return null;
select @Reset = 1, @i = 1, @Ret = '';
while (@i <= len(@Text))
select @c = substring(@Text, @i, 1),
@Ret = @Ret + case when @Reset = 1 then UPPER(@c) else LOWER(@c) end,
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How to iterate over the files of a certain directory, in Java? [duplicate]
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If you have the directory name in myDirectoryPath,
import java.io.File;
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File dir = new File(myDirectoryPath);
File[] directoryListing = dir.listFiles();
if (directoryListing != null) {
for (File child : directo...
How can I export the schema of a database in PostgreSQL?
... a Windows machine but I'm pretty sure from memory that's the command. See if the help works for you too.
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Select rows of a matrix that meet a condition
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This is easier to do if you convert your matrix to a data frame using as.data.frame(). In that case the previous answers (using subset or m$three) will work, otherwise they will not.
To perform the operation on a matrix, you can define a column...
Does the use of the “Async” suffix in a method name depend on whether the 'async' modifier is used?
...ou append "Async" to the names of methods that have an
Async or async modifier.
http://msdn.microsoft.com/en-us/library/hh191443.aspx#BKMK_NamingConvention
Which doesn't even mention that your own asynchronous methods returning Task need the Async suffix, which I think we all agree they do.
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How can I wait for a thread to finish with .NET?
...ManualResetEvent is a WaitHandle as jrista suggested.
One thing to note is if you want to wait for multiple threads: WaitHandle.WaitAll() won't work by default, as it needs an MTA thread. You can get around this by marking your Main() method with MTAThread - however this blocks your message pump and...
How to pull a random record using Django's ORM?
...r than the accepted answer, note that this approach makes two SQL queries. If the count changes in between, it might be possible to get an out of bounds error.
– Nelo Mitranim
Sep 12 '15 at 9:37
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StringIO in Python3
...so you can end up with TypeErrors ( string argument expected, got 'bytes') if you make this change in isolation. You need to carefully distinguish btyes and str (unicode) in python 3.
– Andy Hayden
Apr 22 '15 at 3:13
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Where does Android emulator store SQLite database?
...best off using adb from the command line to jack into a running emulator. If you can get the specific directory and filename, you can do an "adb pull" to get the database file off of the emulator and onto your regular hard drive.
Edit: Removed suggestion that this works for unrooted devices too - ...