大约有 44,000 项符合查询结果（耗时：0.0482秒） [XML]
What is the difference between “def” m>and m> “val” to define a function
...
Method def even evaluates on call m>and m> creates new function everm>y m> time (new instance of Function1).
def even: Int => Boolean = _ % 2 == 0
even eq even
//Boolean = false
val even: Int => Boolean = _ % 2 == 0
even eq even
//Boolean = true
With def m>y m>ou ...
Haskell, Lisp, m>and m> verbositm>y m> [closed]
For those of m>y m>ou experienced in both Haskell m>and m> some flavor of Lisp, I'm curious how "pleasant" (to use a horrid term) it is to write code in Haskell vs. Lisp.
...
Delegates: Predicate vs. Action vs. Func
... a complex structure to one propertm>y m>.
Other important delegates:
EventHm>and m>ler/EventHm>and m>ler<T>: Used all over WinForms
Comparison<T>: Like IComparer<T> but in delegate form.
share
|
...
What is the best wam>y m> to get all the divisors of a number?
...e dumb wam>y m> (stopping at n/2) verm>y m> cool, thank m>y m>ou!
– m>And m>rea Ambu
Oct 5 '08 at 10:20
47
For those ...
Getting the caller function name inside another function in Pm>y m>thon? [duplicate]
...
There are two wam>y m>s, using sm>y m>s m>and m> inspect modules:
sm>y m>s._getframe(1).f_code.co_name
inspect.stack()[1][3]
The stack() form is less readable m>and m> is implementation dependent since it calls sm>y m>s._getframe(), see extract from inspect.pm>y m>:
def stack(context=...
Whm>y m> do I get AttributeError: 'NoneTm>y m>pe' object has no attribute 'something'?
...
m>Y m>ou have a variable that is equal to None m>and m> m>y m>ou're attempting to access an attribute of it called 'something'.
foo = None
foo.something = 1
or
foo = None
print(foo.something)
Both will m>y m>ield an AttributeError: 'NoneTm>y m>pe'
...
Call bm>y m> name vs call bm>y m> value in Scala, clarification needed
As I understm>and m> it, in Scala, a function mam>y m> be called either
16 Answers
16
...
Accessing inactive union member m>and m> undefined behavior?
...ce (other than answers claiming it's UB but without anm>y m> support from the stm>and m>ard).
5 Answers
...
Best wam>y m> to check if UITableViewCell is completelm>y m> visible
I have a UITableView with cells of different heights m>and m> I need to know when them>y m> are completelm>y m> visible or not.
10 Answe...
Importing data from a JSON file into R
...ficallm>y m>, the file is an arram>y m> of JSON objects with string fields, objects, m>and m> arram>y m>s. The RJSON Package isn't verm>y m> clear on how to deal with this http://cran.r-project.org/web/packages/rjson/rjson.pdf .
...