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promise already under evaluation: recursive default argument reference or earlier problems?
...instances where they occur we get:
f <- function(x, T) {
10 * sin(0.3 * x) * sin(1.3 * x^2) + 0.001 * x^3 + 0.2 * x + 80
}
g <- function(x, T, f. = f) { ## 1. note f.
exp(-f.(x)/T)
}
test<- function(g. = g, T = 1) { ## 2. note g.
g.(1,T)
}
test()
## [1] 8.560335e-37
...
How to construct a set out of list items in python?
...
333
If you have a list of hashable objects (filenames would probably be strings, so they should co...
Enable access control on simple HTTP server
...ATH, and you can just run it using simple-cors-http-server.py too.
Python 3 solution
Python 3 uses SimpleHTTPRequestHandler and HTTPServer from the http.server module to run the server:
#!/usr/bin/env python3
from http.server import HTTPServer, SimpleHTTPRequestHandler, test
import sys
class COR...
Problems with lib-icu dependency when installing Symfony 2.3.x via Composer
...;
Intl::getIcuDataVersion();
attention: not needed anymore ( symfony 2.3 has meanwhile been released )
add the minimum stability flag @dev or @rc to your dependency like this please:
composer create-project symfony/framework-standard-edition mynewerproject/ 2.3.*@dev
The default stability i...
Clear text from textarea with selenium
...
answered Oct 18 '11 at 15:38
IsaacIsaac
7,44044 gold badges2323 silver badges3030 bronze badges
...
Is False == 0 and True == 1 an implementation detail or is it guaranteed by the language?
... and boolean False are still properly returned for comparisons.
In Python 3.x True and False are keywords and will always be equal to 1 and 0.
Under normal circumstances in Python 2, and always in Python 3:
False object is of type bool which is a subclass of int:
object
|
int
|
bool
It...
How to find out if a Python object is a string?
...
305
Python 2
Use isinstance(obj, basestring) for an object-to-test obj.
Docs.
...
Get item in the list in Scala?
...
311
Use parentheses:
data(2)
But you don't really want to do that with lists very often, since ...
C++ include and import difference
...
Head GeekHead Geek
32.5k2020 gold badges7272 silver badges8282 bronze badges
...
How do I move an existing window to a new tab?
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3
Note that help Ctrl-W_T takes you to the help entry of Ctrl-W_t (lower case), however, further down the page is the Ctrl-W_T entry (with cap...