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how to install gcc on windows 7 machine?
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How to succinctly write a formula with many variables from a data frame?
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How to check if an activity is the last one in the activity stack for an application?
...urrently running, with the most recent being first and older ones after in order'.
– sandrstar
Jan 29 '15 at 6:34
2
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How can I extend typed Arrays in Swift?
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@alexpyoung you would mess up the order of the array if you do Set()
– Danny Wang
Feb 24 at 23:48
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What is the common header format of Python files?
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How can I copy data from one column to another in the same table?
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PostgreSQL: Difference between text and varchar (character varying)
...T count(*) FROM (
SELECT substring(f,1,1) || f FROM test WHERE f<'a0' ORDER BY 1 LIMIT 80000
) t;
... And use EXPLAIN ANALYZE.
UPDATED AGAIN 2018 (pg10)
little edit to add 2018's results and reinforce recommendations.
Results in 2016 and 2018
My results, after average, in many machines...
How do I strip non alphanumeric characters from a string and keep spaces?
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In this case I would use the bang method (gsub! instead of gsub) in order to clean the input permanently.
#permanently filter all non-alphanumeric characters, except _
@search_query.gsub!(/\W/,'')
This avoids a situation where @seach_query is used elsewhere in the code without cleaning it...
SFTP Libraries for .NET [closed]
...hether files existed IIRC), and I had to call methods on private fields in order to get them working; commented-out chunks of Java code left in the source; wrapper classes named after ones in the Java standard library; Java idioms throughout. I've used SSH.NET instead (as in @asbjornu's post) with g...
Get the client IP address using PHP [duplicate]
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