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How to empty a list in C#?
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Can you verify that setting list = new List<>() is actually slower than list.Clear();? According to MSDN (link below) list.Clear(); is an O(N) operation, and I can't imagine instantiating a new list would take longer than that. msdn.micr...
difference between variables inside and outside of __init__()
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Variable set outside __init__ belong to the class. They're shared by all instances.
Variables created inside __init__ (and all other method functions) and prefaced with self. belong to the object instance.
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Convert light frequency to RGB?
Does anyone know of any formula for converting a light frequency to an RGB value?
9 Answers
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Batch script: how to check for admin rights
...y typing NET HELPMSG 2114
In this case the %errorLevel% variable will be set to 2.
Note The Server service is not started while in Safe Mode (with or without networking).
Looking for an alternative
Something that:
can be run out of the box on Windows XP and later (32 and 64 bit);
doesn't tou...
JavaScript data grid for millions of rows [closed]
...does not virtualize the scrollbar itself - the scrollable area's height is set to the total height of all the rows. The rows are still being added and removed as the user is scrolling, but the scrolling itself is done by the browser. That allows it to be very fast yet smooth (onscroll events are n...
Relational table naming convention [closed]
...-description" or just "description"? Of course with the right foreign keys set.. Naming it only description would be problematic since i could also have user description or account description or whatever.
That's right. Either user_product_description xor product_description will be correct, base...
.htaccess redirect all pages to new domain
....html
Redirect to a specific index page:
# Provide Specific Index Page (Set the default handler)
DirectoryIndex index.html
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Change directory command in Docker?
... editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
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Disable all table constraints in Oracle
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To take in count the dependencies between the constraints:
SET Serveroutput ON
BEGIN
FOR c IN
(SELECT c.owner,c.table_name,c.constraint_name
FROM user_constraints c,user_tables t
WHERE c.table_name=t.table_name
AND c.status='ENABLED'
ORDER BY c.constraint_type...
How to get StackPanel's children to fill maximum space downward?
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An alternative method is to use a Grid with one column and n rows. Set all the rows heights to Auto, and the bottom-most row height to 1*.
I prefer this method because I've found Grids have better layout performance than DockPanels, StackPanels, and WrapPanels. But unless you're using them...