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How to 'bulk update' with Django?
...each essentially having the form of the first example above) + the initial SELECT-query.
If every row requires a unique value there is no way to avoid one query per update. Perhaps look into other architectures like CQRS/Event sourcing if you need performance in this latter case.
...
Rounded table corners CSS only
...
The selected answer is terrible. I would implement this by targeting the corner table cells and applying the corresponding border radius.
To get the top corners, set the border radius on the first and last of type of the th ele...
is of a type that is invalid for use as a key column in an index
...ey nvarchar(max)
)
RETURNS bit
AS
BEGIN
declare @res bit
if exists(select * from key_value where [key] = @key)
set @res = 0
else
set @res = 1
return @res
END
But note that a native index is more performant than a check constraint so unless you really can't specify ...
What are the implications of using “!important” in CSS? [duplicate]
...ork when the browser decides how CSS affects the page. The more specific a selector is, the more importance is added to it. This usually coincides with how often the selected element occurs. For example:
button {
color: black;
}
button.highlight {
color: blue;
font-size: 1.5em;
}
b...
What is the 'page lifecycle' of an ASP.NET MVC page, compared to ASP.NET WebForms?
... issues of webform controls.
You can use jquery to hook into the dropdown selection on the client side and submit standard or ajax style requests. Those request can return new pages, redirects, html fragments or even JSON data that can be used to update the existing page.
The asp.net Session can b...
How to show a confirm message before delete?
...message on clicking delete (this maybe a button or an image). If the user selects ' Ok ' then delete is done, else if ' Cancel ' is clicked nothing happens.
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How do I make an attributed string using Swift?
...ng: " Attributed Strings")
myString.append(attrString)
Next we'll just select the "Strings" word, which starts at index 17 and has a length of 7. Notice that this is an NSRange and not a Swift Range. (See this answer for more about Ranges.) The addAttribute method lets us put the attribute key n...
Does Python support multithreading? Can it speed up execution time?
...ross multiple cores. This extends to I/O controlled by the kernel, such as select() calls for socket reads and writes, making Python handle network events reasonably efficiently in a multi-threaded multi-core setup.
What many server deployments then do, is run more than one Python process, to let t...
How can I efficiently download a large file using Go?
...
The answer selected above using io.Copy is exactly what you need, but if you are interested in additional features like resuming broken downloads, auto-naming files, checksum validation or monitoring progress of multiple downloads, chec...
Can jQuery read/write cookies to a browser?
...age (like divs or table rows), and I want to let the user click on them to select them. That seems easy enough in jQuery. To save which items a user clicks on with no server-side post backs, I was thinking a cookie would be a simple way to get this done.
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