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Is there any difference between “foo is None” and “foo == None”?
... it compares the same object instance
Whereas == is ultimately determined by the __eq__() method
i.e.
>>> class Foo(object):
def __eq__(self, other):
return True
>>> f = Foo()
>>> f == None
True
>>> f is None
False
...
How to add a custom Ribbon tab using VBA?
... free utility called Custom UI Editor.
Edit: To accommodate new request by OP
Tutorial
Here is a short tutorial as promised:
After you have installed the Custom UI Editor (CUIE), open it and then click on File | Open and select the relevant Excel File. Please ensure that the Excel File is clo...
Change auto increment starting number?
...ment value, and the change will be applied instantly.
You can verify this by issuing a SHOW CREATE TABLE t statement. You should see:
> SHOW CREATE TABLE t \G
*************************** 1. row ***************************
Table: t
Create Table: CREATE TABLE `t` (
...
) ENGINE=InnoDB AUTO...
Rails params explained?
...a series of key-value pairs where the key and the value are strings, but Ruby on Rails has a special syntax for making the params be a hash with hashes inside. For example, if the user's browser requested
http://www.example.com/?vote[item_id]=1&vote[user_id]=2
then params[:vote] would be a ha...
Making TextView scrollable on Android
...e this method scrolling is actually "smooth" (in that you can scroll pixel by pixel), however it is not kinetic. As soon as you remove your finger it stops scrolling instantly - there is no flicking. This is pretty unacceptable for a modern UI so I'm going to edit the answer to make sure other peopl...
How to overlay one div over another div
...
@tonsils: The instructions by alex should give you the desired result, so there must be something else causing the problem you describe. Could you provide us with a sample of the code (HTML + CSS) so we can help you?
– Erik Töyr...
Convert Rows to columns using 'Pivot' in SQL Server
...' + QUOTENAME(Week)
from yt
group by Week
order by Week
FOR XML PATH(''), TYPE
).value('.', 'NVARCHAR(MAX)')
,1,1,'')
set @query = 'SELECT store,' + @cols + ' from
(
select st...
How can I generate an INSERT script for an existing SQL Server table that includes all stored rows?
...INTO @COLUMNS
SELECT Row_number()Over (Order by ORDINAL_POSITION ) [Count], Column_Name
FROM INformation_schema.columns
WHERE Table_schema=@Schema_name AND table_name=@Table_name
SELECT @Total_Rows= Count(1)
FROM @COLUMNS
SEL...
Handling colon in element ID with jQuery
...
In short
$(document.getElementById("test:abc")) is what you should use.
Explanation:
Apart from the speed gain (see further down), it is easier to handle.
Example: Say you have a function
function doStuff(id){
var jEle = $("#" + id); //is n...
Selenium wait until document is ready
...ed solution only waits for DOM readyState to signal complete. But Selenium by default tries to wait for those (and a little bit more) on page loads via the driver.get() and element.click() methods. They are already blocking, they wait for the page to fully load and those should be working ok.
Probl...