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Real mouse position in canvas [duplicate]
...nt
}
}
With transformations applied to context (scale, rotation etc.)
Then there is the more complicated case where you have applied transformation to the context such as rotation, skew/shear, scale, translate etc. To deal with this you can calculate the inverse matrix of the current matrix.
N...
How do I use ROW_NUMBER()?
...MBER() OVER (Order by Id) AS RowNumber, Field1, Field2, Field3
FROM User
Then when you want to go 5 rows back then you can take the current row number and use the following query to determine the row with currentrow -5
SELECT us.Id
FROM (SELECT ROW_NUMBER() OVER (ORDER BY id) AS Row, Id
FROM...
Cannot delete or update a parent row: a foreign key constraint fails
...The simple way would be to disable the foreign key check; make the changes then re-enable foreign key check.
SET FOREIGN_KEY_CHECKS=0; -- to disable them
SET FOREIGN_KEY_CHECKS=1; -- to re-enable them
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Delete all rows in an HTML table
...he <th> row in a <thead> and the other rows in a <tbody> then replace the <tbody> with a new, empty one.
i.e.
var new_tbody = document.createElement('tbody');
populate_with_new_rows(new_tbody);
old_tbody.parentNode.replaceChild(new_tbody, old_tbody)
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Full screen background image in an activity
...erfect images for different dpi and place them in related drawable folder. Then set
android:background="@drawable/your_image"
Option 2:
Add a single large image. Use FrameLayout. As a first child add an ImageView. Set the following in your ImageView.
android:src="@drawable/your_image"
android:s...
Remove a git commit which has not been pushed
...vert HEAD
This command will revert/remove the last one commit/change and then you can push
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Why java classes do not inherit annotations from implemented interfaces?
...ample above, it would find the Foo's annotation (MyClass doesn't have one, then Interfaces are searched and taken in the order in which they are after implements) and therefore print "baz". Cool.
– Petr Janeček
Apr 20 '12 at 10:20
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Why does the indexing start with zero in 'C'?
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What if they had just removed the bit 0.. then the 8th number would still be 111...
– DanMatlin
Aug 17 '13 at 20:38
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SQL Server SELECT LAST N Rows
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This returns the rows upside down. You then have to re-order by them to get back the original order.
– Mark
Nov 24 '17 at 9:53
add a commen...
Undo git update-index --skip-worktree
...e using Tortoise Git:
Right click on the folder or on the specific file, then choose TortoiseGit > Check for modifications
Only check Show ignore local changes flagged files. You should see the file that you ignored (or all the files you've ignored, if you've right clicked on the folder)
Right ...