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What are all the uses of an underscore in Scala?
...tten!
Example showing why foo(_) and foo _ are different:
This example comes from 0__:
trait PlaceholderExample {
def process[A](f: A => Unit)
val set: Set[_ => Unit]
set.foreach(process _) // Error
set.foreach(process(_)) // No Error
}
In the first case, process _ represents...
Entity Framework vs LINQ to SQL
...dict while they are very similar in style using LINQ lambdas, each API has completely different underpinnings. For instance the way LINQ2SQL generates SQL queries allows for the use of SQL functions, whereas L2E does not, or at least did not as of 2008.
– Kris
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Pythonic way to check if a list is sorted or not
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A combo of a couple of the solutions: def isSorted(x, key = lambda x: x): return all([key(x[i]) <= key(x[i + 1]) for i in xrange(len(x) - 1)])
– eacousineau
Sep 27 '11 at 23:26
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Using Git, show all commits that are in one branch, but not the other(s)
...I would like to delete. However, before doing so, I want to check that all commits made to this branch were at some point merged into some other branch. Thus, I'd like to see all commits made to my current branch which have not been applied to any other branch [or, if this is not possible without so...
How do I make and use a Queue in Objective-C?
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I added a commented-out line at the beginning of dequeue for those that wish to return nil rather than raise an exception when trying to dequeue from an empty queue. IMO, following the NSMutableArray behavior of raising an exception is...
How can I split a text into sentences?
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How do I expand the output display to see more columns of a pandas DataFrame?
...’s width exceeds display.width. [default: True] [currently: True]
See: http://pandas.pydata.org/pandas-docs/stable/generated/pandas.set_option.html
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HTML: Include, or exclude, optional closing tags?
...does HTML 5 do?
The answer to this question is in the W3C Working Draft:
http://www.w3.org/TR/html5/syntax.html#syntax-tag-omission
And what should i do?
It's a matter of style. I try to never omit end tags because it helps me to be rigorous and not omit tags that are necessary.
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SQL - The conversion of a varchar data type to a datetime data type resulted in an out-of-range valu
...his link for conversion formats and further reading.
https://www.w3schools.com/sql/func_sqlserver_convert.asp
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Python's many ways of string formatting — are the older ones (going to be) deprecated?
...g to look at the reference
Even back in 2009, one had messages like this: http://mail.python.org/pipermail/python-dev/2009-October/092529.html - the subject had barely showed up in the lists since.
2016 update
In current Python development version (which will become Python 3.6) there is a third ...