I'm grabbing some data off of webpages and trying to concatenate with some data pulled from other pages but keep getting the error that the data-tables need to be the same size. What am I missing here?
The datatables are myCoID (just a string) and NumStaff and NumClients- each of which has 1 row and 1 column. I've tried almost every permutation of
%myCoID + NumStaff + NumClients%
%myCoID + NumStaff[0] + NumClients[0]%
%[myCoID + NumStaff + NumClients]%
Where am I going wrong?
I have an InputStream in my iOS app (Swift 4) and check the status a few seconds after opening it. The returned value is 7
print(String(self.inputStream!.streamStatus.rawValue)) // prints 7
But there is no corresponding entry with the value 7 in the enum described in the docs: https://developer.apple.com/documentation/foundation/stream.status
How can the value be 7? How can I get a textual representation of the status?
My guess was that the 7 is maybe a combination of other values that can be obtained by interpreting the 7 binary and looking which bits are 1. So in this case the first 3 bits are 1 (decimal 1,2,4) and they belong to (opening=1, open=2, writing=4). But this seems strange to me
EDIT: As Martin said in the comments, 7 is error.
I have the following rails query:
#related_products = #taxon.products.offset(rand(Spree::Product.count)).limit(7)
And sometime it outputs 7 and sometimes it will output less, but when it outputs less it messes up the styling. Anyway to make it always output 7 and only 7?
Thanks!
That's because the offset that you are choosing has the possibility of being less than 7 away from the last record. Instead force the offset to max out at 7 below the maximum:
#related_products = #taxon.products.offset(rand(Spree::Product.count - 7)).limit(7)
I recently migrated from Delphi 7 with SQL Server 2000 to Delphi 2010 with SQL Server 2008. I am using dbExpress.
After installing the new version I have found that the on sites that have a lot of data that system has become slow and unstable.
Can any one tell me if there is an issue between dbExpress and SQL Server 2008? Please help!!!!!
By performing a profiler trace you can see if you have any bottlenecks on SQL Server. Your default profiler trace (include TextData for RPC:Completed) should be good enough to start with.
The profiler trace can be analysed to see what takes the longest time. You can easily load the trace into a table and analyse it there. Note that when loaded into a table, the duration column is in microseconds. See the function fn_trace_gettable for a quicker way of loading a trace file into a table.
A common cause for poor performance, especially after a major change, is bad indexing.
Since SQL Server 2005 the optimiser stores within in-memory structures the indices it would like to have seen. These can be accessed with the dynamic management views sys.dm_db_missing_index_details, sys.dm_db_missing_index_groups and sys.dm_db_missing_index_groups_stats.
Here is a simple sample SQL to create your own missing index report, including the basic code to generate the missing index.
select
d.statement
, d.equality_columns
, d.inequality_columns
, d.included_columns
, s.user_seeks Seeks
, s.last_user_seek
, cast (s.avg_total_user_cost as decimal (9,2)) Cost
, s.avg_user_impact [%]
, 'CREATE INDEX MissingIndex_ ON ' + d.statement + '('
+ case when equality_columns IS NOT NULL then equality_columns else '' end
+ case when equality_columns IS NOT NULL AND inequality_columns IS NOT NULL then ', ' else '' end
+ case when inequality_columns IS NOT NULL then inequality_columns else '' end
+ ')'
+ case when included_columns IS NOT NULL then ' INCLUDE (' + included_columns + ')' else '' end
AS SQL
from sys.dm_db_missing_index_details d
INNER JOIN sys.dm_db_missing_index_groups g ON d.index_handle = g.index_handle
INNER JOIN sys.dm_db_missing_index_group_stats s ON g.index_group_handle = s.group_handle
It might seem natural to use Ctrl + +, Ctrl + -, and Ctrl + 0 as shortcuts for an application's zoom in, zoom out, and restore default zoom (typically 100 %) actions. Now, in Delphi, I am able to assign Ctrl + + and Ctrl + 0 as shortcuts. The former, though, requires that the plus sign of the main part of the keyboard is used; the plus sign of the numerical keypad cannot be used.
Problem arises, however, when I want to assign Ctrl + - as a shortcut. It simply doesn't work. If I assign "Ctrl+-" in the IDE, the value stored in the ShortCut property is 16495. If we subtract ssCtrl from this, we obtain 111. A work-around, one would believe, would be to assign ShortCut := 45 + ssCtrl, or, equivalently, ShortCut := Menus.ShortCut(45, [ssCtrl]), because ord('-') = 45. But that doesn't work.
However, I have found a working solution: ShortCut := 189 + ssCtrl. I choose 189 because that is the number I receive when I depress the "-" key and listen to the KeyDown event.
So, why am I not happy with this? Well, I am afraid that the constant 189 only is valid on Swedish keyboards. I have tried to read about this, and, as usual, the MSDN documentation is rather clear, but then, who knows how Delphi handles things.
The key code 189 is VK_OEM_MINUS in Windows.pas, so your solution isn't just for Swedes.
the correct to use menu shortcut on the numeric pad is
CtrlNum + for the [+]
CtrlNum - for the [-]
there is a space between Num + and Num -
I'm not sure why you're getting 16495 for Ctrl + -. When I add that shortcut to an action, it gives me 16573, and it does show up on the menu as Ctrl + -, and that shortcut does work.
However, you are correct that Menus.ShortCut(ord('-', [ssCtrl]) does not work. It gives the value 16429 and shows up on the menu as Ctrl + Ins, and Ctrl + Ins works as the shortcut.
Maybe this is a problem with Delphi 2009 and later since they added Unicode.