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Get the client's IP address in socket.io
..., is there an easy way to get the IP address of an incoming connection? I know you can get it from a standard HTTP connection, but socket.io is a bit of a different beast.
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Drop all tables whose names begin with a certain string
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You may need to modify the query to include the owner if there's more than one in the database.
DECLARE @cmd varchar(4000)
DECLARE cmds CURSOR FOR
SELECT 'drop table [' + Table_Name + ']'
FROM INFORMATION_SCHEMA.TABLES
WHERE Table_Name LIKE 'p...
How to dump a dict to a json file?
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Tip : If you don't want to write to a file, and only see the output, try redirecting it to stdout: json.dump('SomeText', sys.stdout)
– Arindam Roychowdhury
Dec 14 '16 at 8:48
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What is the correct way to get a subarray in Scala?
...ColumnB", "ColumnC")
val columns_original = original_array(0)
for (column_now <- columns_subset) {
sub_array += original_array.map{_(columns_original.indexOf(column_now))}
}
sub_array
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Should I use encodeURI or encodeURIComponent for encoding URLs?
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If you're encoding a string to put in a URL component (a querystring parameter), you should call encodeURIComponent.
If you're encoding an existing URL, call encodeURI.
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Reading an Excel file in PHP [closed]
... can handle .xls-files, but not .xlsx files. PHPExcel can handle a lot of different formats (including .xls and .xlsx) (github.com/PHPOffice/Phpexcel) and is in stable version. PHPSpreadsheet is a further development of PHPExcel but is not stable (as I'm writing this): github.com/PHPOffice/PhpSpread...
Why do assignment statements return a value?
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@user437291: If instance construction wasn’t an expression, you couldn’t do anything with the constructed object — you couldn’t assign it to something, you couldn’t pass it into a method, and you couldn’t call any methods on i...
How can I initialize base class member variables in derived class constructor?
...rivate. You can't initialize them because they are not members of class B. If you made them public or protected you could assign them in the body of B::B().
– R Samuel Klatchko
Sep 13 '11 at 17:22
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Difference between -pthread and -lpthread while compiling
What is the difference between gcc -pthread and gcc -lpthread which is used while compiling multithreaded programs?
3 A...
How to copy from current position to the end of line in vi
... to the end of the line with y$ and paste with p.
To copy/paste between different instances, you can use the system clipboard by selecting the * register, so the commands become "*y$ for copying and "*p for pasting.
$ move-to-linebreak
$
y$ yank-to-linebreak
y,$
"*y$ select clipboard-register...