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Remove duplicated rows using dplyr
...me, and it can pair nicely with the arrange() function.
Let's say you had customer sales data and you wanted to retain one record per customer, and you want that record to be the one from their latest purchase. Then you could write:
customer_purchase_data %>%
arrange(desc(Purchase_Date)) %&g...
How to sort strings in JavaScript
... is:
return item1.attr.localeCompare(item2.attr);
Bugs found in all the custom javascript "natural string sort order" implementations
There are quite a bunch of custom implementations out there, trying to do string comparison more precisely called "natural string sort order"
When "playing" with...
Visual Studio 2010 shortcut to find classes and methods?
...d in Visual Studio 2012, so you have to add it back using menu Tools → Customize. The hotkeys may have changed too: I'm not sure since mine are all customized.
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NAnt or MSBuild, which one to choose and when?
...
@Yordan: or just put your customizations into a separate .build file (or whatever) and import+execute that from your .csproj file. Then you only have to edit the .csproj once, and can add the .build file to your solution. Double-click and you're editi...
Is there a standard keyboard shortcut to build the current project in Visual Studio?
...ld, but I would like a shortcut that just builds the current project. Is a custom shortcut my only option?
14 Answers
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Warn user before leaving web page with unsaved changes
...aving, your changes will be lost.'
}
);
});
</script>
Custom messages not supported everywhere
Do note that Firefox 4 didn't support custom messages in this dialog. As of april 2016, Chrome 51 is being rolled out in which custom messages are also being removed.
Some alternati...
What is your naming convention for stored procedures? [closed]
...involved? For example, what if the sproc queries information from both the Customer and the Orders table?
– DOK
Oct 26 '08 at 18:27
2
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Python: How do I make a subclass from a superclass?
...self):
MySuperClass.__init__(self)
# <the rest of your custom initialization code goes here>
The section on inheritance in the python documentation explains it in more detail
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T-SQL query to show table definition?
...H
, IS_NULLABLE
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_NAME = 'Customers'
SELECT CONSTRAINT_NAME
FROM INFORMATION_SCHEMA.CONSTRAINT_TABLE_USAGE
WHERE TABLE_NAME = 'Customers'
SELECT name, type_desc, is_unique, is_primary_key
FROM sys.indexes
WHERE [object_id] = OBJECT_ID('dbo.Customers...
How to sort a list of strings?
...e sorting. You can take advantage of the optional parameter key to specify custom sorting order (the alternative, using cmp, is a deprecated solution, as it has to be evaluated multiple times - key is only computed once per element).
So, to sort according to the current locale, taking language-spec...