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Is there an Eclipse line-width marker?
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Neon (4.6) does not have this setting :(
– törzsmókus
Aug 22 '16 at 8:16
4
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When to use in vs ref vs out
...costly. So you want to avoid marshalling the initial value when the method doesn't make use of it.
Beyond that, it also shows the reader of the declaration or the call whether the initial value is relevant (and potentially preserved), or thrown away.
As a minor difference, an out parameter needs n...
Do declared properties require a corresponding instance variable?
...uch as retain and readonly, which the instance variable declaration method does not. Basically, ivar is the old way, and @property extends it and makes it fancier/easier. You can refer to either using the self. prefix, or not, it doesn't matter as long as the name is unique to that class. Otherwise,...
select * vs select column
...- broken up into columns pieces), so, to answer the question you asked, it doesn't matter from a performance perspective. However, for many other reasons, (below) you should always select specifically those columns you want, by name.
It always pulls a tuple, because (in every vendors RDBMS I am f...
Send attachments with PHP Mail()?
... an answer how to use the mail() function to add attachments. This answer does not help me do that.
– Cypher
Jun 9 '14 at 21:02
20
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How to use single storyboard uiviewcontroller for multiple subclass
...so that we can use its Storyboard for more classes. So the magic line that does it all is highlighted in my solution and must be used in awakeFromNib in ParentVC. What happens then is that it uses all methods from newly set ChildVC1 which becomes as a subclass. If you want to use it for more ChildV...
How to sort a dataframe by multiple column(s)
....)),]
return(x)
detach(x)
}
microbenchmark(esort(dd, -z, b),times=1000)
Doesn't appear to be compatible with microbenchmark due to the attach/detach.
m <- microbenchmark(
arrange(dd,desc(z),b),
sort(dd, f= ~-z+b ),
dd[with(dd, order(-z, b)), ] ,
dd[order(-dd$z, dd$b),],
times=1000...
Control the size of points in an R scatterplot?
...he advice espoused above by doug's comment is not necessarily wrong but it does significantly overstate any potential problems with using the cex argument when plotting. There are many, many instances where it is both useful and the best option.
– joran
Oct 16 ...
Using an ORM or plain SQL? [closed]
...st developers aren't very good at SQL"??? I would say that most developers does not know how to properly use LINQ, the power of expression trees, and ORMs in general, code generation, and many other things. But no, I do not have any basis to make such a strong statement.
– Adan...
Postgres and Indexes on Foreign Keys and Primary Keys
Does Postgres automatically put indexes on Foreign Keys and Primary Keys? How can I tell? Is there a command that will return all indexes on a table?
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