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How to define Gradle's home in IDEA?
...port a Gradle project into IntelliJ, and when I get to the Gradle Home textbox, it is not automatically populated, nor will typing in the path of Gradle Home result in a valid location - I have the GRADLE_USER_HOME environment variable set (to what I think is!) the correct path, and I have bee...
Why can't I use a list as a dict key in python?
...e on the topic in the Python wiki: Why Lists Can't Be Dictionary Keys. As explained there:
What would go wrong if you tried to use lists as keys, with the hash as, say, their memory location?
It can be done without really breaking any of the requirements, but it leads to unexpected behavior. L...
What does asterisk * mean in Python? [duplicate]
...rm *identifier is
present, it is initialized to a tuple
receiving any excess positional
parameters, defaulting to the empty
tuple. If the form **identifier is
present, it is initialized to a new
dictionary receiving any excess
keyword arguments, defaulting to a new
empty dictionary.
...
Does pandas iterrows have performance issues?
...ernally by pandas, though it depends on what is going on inside the apply expression. For example, df.apply(lambda x: np.sum(x)) will be executed pretty swiftly, though of course, df.sum(1) is even better. However something like df.apply(lambda x: x['b'] + 1) will be executed in Python space, and co...
Capturing mobile phone traffic on Wireshark
...5 added a remote virtual interface (RVI) facility that lets you use Mac OS X packet trace programs to capture traces from an iOS device. See here for more details
For all phones, wi-fi only: Set up your PC as a wireless access point, then run wireshark on the PC
For all phones, wi-fi only: Get a ca...
How to check that an object is empty in PHP?
...g doesn't work for me, because I get the error: PHP Parse error: syntax error, unexpected '(array)' (array) (T_ARRAY_CAST) in ... I use PHP version 5.4.28 and the first option with two lines of code works for me.
– Coanda
May 18 '14 at 13:34
...
What does “not run” mean in R help pages?
...
"not run" encloses code that shouldn't be executed in the example function (e.g. time-consuming code parts, user-interaction, ...).
see e.g. ?example:
As detailed in the manual Writing R Extensions, the author of
the help page can markup parts of the examples for tw...
What's the reason I can't create generic array types in Java?
... But what about erasure? Why doesn't that apply?
– Qix - MONICA WAS MISTREATED
Mar 5 '13 at 8:22
15
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How to model type-safe enum types?
...
http://www.scala-lang.org/docu/files/api/scala/Enumeration.html
Example use
object Main extends App {
object WeekDay extends Enumeration {
type WeekDay = Value
val Mon, Tue, Wed, Thu, Fri, Sat, Sun = Value
}
import WeekDay._
def isWorkingDay(d: WeekDay) = !...
Why main does not return 0 here?
...r than just a move and a return—so it’s almost certainly a register, eax specifically on x86.
– Jon Purdy
Dec 30 '11 at 9:37
8
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