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Grouping functions (tapply, by, aggregate) and the *apply family
...of the *apply family is covered by the extremely popular plyr package, the base functions remain useful and worth knowing.
This answer is intended to act as a sort of signpost for new useRs to help direct them to the correct *apply function for their particular problem. Note, this is not intended t...
Single Page Application: advantages and disadvantages [closed]
...ript handle it. this is great advantage to where I had to guess time zones based on location derived from users IP.
to me state is more nicely maintained in an SPA because once you have set a variable you know it will be there. this gives a feel of developing an app rather than a web page. this hel...
Distinct not working with LINQ to Objects
This is based on an example in "LINQ in Action". Listing 4.16.
9 Answers
9
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Should operator
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For char istream and ostream
The following code will work only for char-based streams.
// OUTPUT << A
std::ostream & operator << (std::ostream & p_oOutputStream, const Paragraph & p_oParagraph)
{
// do the insertion of p_oParagraph
return p_oOutputStream ;
}
// INP...
CGridCellNumeric - A numeric cell class for the MFC Grid - C/C++ - 清...
...er get to it, but I think it would be cool if the cell supported different based numbers other than just base 10. Another possibility is to support exponential format. But that is probably going to be more work than what I am willing to put out.
Credits
Chris Maunder for his excellent grid contr...
Extract elements of list at odd positions
... The result will contain the elements placed on the following positions (0-based, so first element is at position 0, second at 1 etc.):
1, 3, 5
so the result (actual numbers) will be:
2, 4, 6
Explanation
The [1::2] at the end is just a notation for list slicing. Usually it is in the following...
Is there a list of screen resolutions for all Android based phones and tablets? [closed]
... No I am not sure, a lot of these values were looked up from random databases on the interwebs and their results didn't always fill me with complete confidence.
– Oliver Pearmain
Jun 11 '14 at 11:40
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reStructuredText tool support
...cessor) document.
rst2s5 - from reStructuredText to S5, a Simple Standards-based Slide Show System
rst2man - from reStructuredText to Man page
Haskell - Pandoc
Pandoc is a Haskell library for converting from one markup format to another, and a command-line tool that uses this library. It can read...
Difference between View and table in sql
...ns data, a view is just a SELECT statement which has been saved in the database (more or less, depending on your database).
The advantage of a view is that it can join data from several tables thus creating a new view of it. Say you have a database with salaries and you need to do some complex stat...
Create a Date with a set timezone without using a string representation
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@jishi—Date objects are based on a UTC time value, not local time. However, the default Date.prototype.toString method will display local time values.
– RobG
May 27 '13 at 5:54
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