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Increment value in mysql update query
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You could also just do this:
mysql_query("
UPDATE member_profile
SET points = points + 1
WHERE user_id = '".$userid."'
");
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Generate a random alphanumeric string in Cocoa
... [randomString appendFormat: @"%C", [letters characterAtIndex: arc4random_uniform([letters length])]];
}
return randomString;
}
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foll...
Why does Vim save files with a ~ extension?
...rning off , backup to a directory set backupdir=~/.vim/backup in .vimrc or _vimrc on windows
– tsukimi
Dec 5 '13 at 1:10
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Algorithm to find top 10 search terms
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Useful book in this area:
Muthukrishnan - "Data Streams: Algorithms and Applications"
Closely related reference to the problem at hand which I picked from the above:
Manku, Motwani - "Approximate Frequency Counts over Data Streams" [pdf]
By the way, Motwani, of Stanford, (edit) was an author of...
Dynamically select data frame columns using $ and a character value
...3 = sample(5,10,repl=T) )
# We want to sort by 'col3' then by 'col1'
sort_list <- c("col3","col1")
# Use 'do.call' to call order. Seccond argument in do.call is a list of arguments
# to pass to the first argument, in this case 'order'.
# Since a data.frame is really a list, we just subset ...
Cannot download Docker images behind a proxy
...led /etc/systemd/system/docker.service.d/http-proxy.conf that adds the HTTP_PROXY environment variable:
[Service]
Environment="HTTP_PROXY=http://proxy.example.com:80/"
If you have internal Docker registries that you need to contact without proxying you can specify them via the NO_PROXY environmen...
Add an element to an array in Swift
...e latter syntax to avoid confusing myself.
– original_username
Jul 7 '14 at 5:56
11
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MySQL OPTIMIZE all tables?
...lcheck to do this at the command line.
One database:
mysqlcheck -o <db_schema_name>
All databases:
mysqlcheck -o --all-databases
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How to get nice formatting in the Rails console
...ease of Ruby 2.0.0.
For rails 4/ruby 2 you could use just
puts object.to_yaml
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How to trim a file extension from a String in JavaScript?
...ould be any file name (Let's assume the file name only contains [a-zA-Z0-9-_] to simplify.).
23 Answers
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