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Applying a function to every row of a table using dplyr?
...mically formed datatframe? So in this data frame the column names are not known. I am able to add if column names are known.
– Arun Raja
May 4 '15 at 7:49
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What is the difference between LL and LR parsing?
... Accept
The two parsing algorithms you mentioned (LL and LR) are known to have different characteristics. LL parsers tend to be easier to write by hand, but they are less powerful than LR parsers and accept a much smaller set of grammars than LR parsers do. LR parsers come in many flavors...
Node.js and CPU intensive requests
... In fact, someone has ported it to the node world: github.com/technoweenie/coffee-resque
– FrontierPsycho
Mar 11 '15 at 10:20
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Are there other whitespace codes like   for half-spaces, em-spaces, en-spaces etc useful in HTML
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Firefox on Windows is fine now (v.61) BTW.
– MSC
Sep 13 '18 at 0:44
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When is an interface with a default method initialized?
...ialized by non constant value (method call), is not used anywhere.
It is known at compile time that constant field of interface is not used anywhere, and the interface is not containing any default method (In java-8) so there is no need to initialize or load the interface.
Interface will be initia...
How is Perl's @INC constructed? (aka What are all the ways of affecting where Perl modules are searc
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Programming Perl - chapter 31 part 13, ch 7.2.41
How does a Perl program know where to find the file containing Perl module it uses?
There does not seem to be a comprehensive @INC FAQ-type post on Stack Overflow, so this question is intended as one.
When to use each approach?
If the modules in...
Under what circumstances are linked lists useful?
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They can be useful for concurrent data structures.
(There is now a non-concurrent real-world usage sample below - that would not be there if @Neil hadn't mentioned FORTRAN. ;-)
For example, ConcurrentDictionary<TKey, TValue> in .NET 4.0 RC use linked lists to chain items that h...
Are Swift variables atomic?
...o redraw a view when the property is changed to a different value; that is now done easier using didSet.
– gnasher729
Jun 11 '14 at 9:22
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Why are margin/padding percentages in CSS always calculated against width?
...al reasoning of why the spec is written this way is still, technically, unknown.
Element height is defined by the height of the
children. If an element has padding-top: 10% (relative to parent
height), that is going to affect the height of the parent. Since the
height of the child is depen...
When should I use cross apply over inner join?
...ct tbl.value + 1 as someFormula) as crossTbl and voilà! Your new field is now ready for use practically like it had always been there in your source data.
Values introduced through CROSS APPLY can...
be used to create one or multiple calculated fields without adding performance, complexity or re...