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Order data frame rows according to vector with specific order

...work as long as your target contains exactly the same elements as df$name, and neither contain duplicate values. From ?match: match returns a vector of the positions of (first) matches of its first argument in its second. Therefore match finds the row numbers that matches target's elements, and...
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How exactly does a generator comprehension work?

... Do you understand list comprehensions? If so, a generator expression is like a list comprehension, but instead of finding all the items you're interested and packing them into list, it waits, and yields each item out of the expression, one...
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How to force uninstallation of windows service

... that prevents the services from being fully deleted, so close that beforehand share | improve this answer | follow | ...
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How to get sp_executesql result into a variable?

...efinition, @retvalOUT=@retval OUTPUT; SELECT @retval; But if you don't, and can not modify the SP: -- Assuming that your SP return 1 value create table #temptable (ID int null) insert into #temptable exec mysp 'Value1', 'Value2' select * from #temptable Not pretty, but works. ...
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How to create separate AngularJS controller files?

...ybe it would be best not to use it in your answer? – Andrew Mar 10 '14 at 14:08 3 @Andrew imho fu...
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Semicolons superfluous at the end of a line in shell scripts?

...lons at the end of a line are superfluous, since the newline is also a command separator. case specifically needs double semicolons at the end of the last command in each pattern block; see help case for details. share ...
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Show a PDF files in users browser via PHP/Perl

...n why I use cgi to show the pdf is I want to track the clicks for the pdf, and cloak the real location of the saved pdf. 5 ...
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Create array of all integers between two numbers, inclusive, in Javascript/jQuery [duplicate]

... And just for general information, in CoffeeScript it would look like "1..25" which actually transforms to something like this in JavaScript. So there is no easier way to do this. – FreeCandies ...
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Best way to check if UITableViewCell is completely visible

I have a UITableView with cells of different heights and I need to know when they are completely visible or not. 10 Answe...
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Export Postgresql table data using pgAdmin

... Just right click on a table and select "backup". The popup will show various options, including "Format", select "plain" and you get plain SQL. pgAdmin is just using pg_dump to create the dump, also when you want plain SQL. It uses something like this...