大约有 30,000 项符合查询结果（耗时：0.0292秒） [XML]
What's the difference between => , ()=>, and Unit=>
...what is passed is substituted for the value name inside the function. For em>x m>ample, take this function:
def f(m>x m>: => Int) = m>x m> * m>x m>
If I call it like this
var y = 0
f { y += 1; y }
Then the code will em>x m>ecute like this
{ y += 1; y } * { y += 1; y }
Though that raises the point of what happens...
How can I see the current value of my $PATH variable on OS m>X m>?
...o use the command echo $PATH to display the PATH variable or you can just em>x m>ecute set or env to display all of your environment variables.
By typing $PATH you tried to run your PATH variable contents as a command name.
Bash displayed the contents of your path any way. Based on your output the fol...
Python's most efficient way to choose longest string in list?
...
From the Python documentation itself, you can use mam>x m>:
>>> mylist = ['123','123456','1234']
>>> print mam>x m>(mylist, key=len)
123456
share
|
improve this answ...
Automatically plot different colored lines
...
You could use a colormap such as HSV to generate a set of colors. For em>x m>ample:
cc=hsv(12);
figure;
hold on;
for i=1:12
plot([0 1],[0 i],'color',cc(i,:));
end
MATLAB has 13 different named colormaps ('doc colormap' lists them all).
Another option for plotting lines in different colors i...
How can I get the client's IP address in ASP.NET MVC?
...
The simple answer is to use the HttpRequest.UserHostAddress property.
Em>x m>ample: From within a Controller:
using System;
using System.Web.Mvc;
namespace Mvc.Controllers
{
public class HomeController : ClientController
{
public ActionResult Indem>x m>()
{
string ip ...
What does a b prefim>x m> before a python string mean?
...
This is Python3 bytes literal. This prefim>x m> is absent in Python 2.5 and older (it is equivalent to a plain string of 2.m>x m>, while plain string of 3.m>x m> is equivalent to a literal with u prefim>x m> in 2.m>x m>). In Python 2.6+ it is equivalent to a plain string, for compatibility ...
urllib2.HTTPError: HTTP Error 403: Forbidden
...tePeriod=unselected&hiddDwnld=true"
hdr = {'User-Agent': 'Mozilla/5.0 (m>X m>11; Linum>x m> m>x m>86_64) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.64 Safari/537.11',
'Accept': 'tem>x m>t/html,application/m>x m>html+m>x m>ml,application/m>x m>ml;q=0.9,*/*;q=0.8',
'Accept-Charset': 'ISO-8859-1,utf-8;q=0....
How to set Python's default version to 3.m>x m> on OS m>X m>?
...
Changing the default python em>x m>ecutable's version system-wide could break some applications that depend on python2.
However, you can alias the commands in most shells, Since the default shells in macOS (bash in 10.14 and below; zsh in 10.15) share a simi...
Multiple aggregations of the same column using pandas GroupBy.agg()
...
@Ben I think you must use a rename afterwards. em>x m>ample by Tom Augspurger (see cell 25)
– Stewbaca
Jan 14 '16 at 17:22
1
...
How can I convert a dictionary into a list of tuples?
... it or organize it as necessary.
See: items(), iteritems()
In Python 3.m>x m>, you would not use iteritems (which no longer em>x m>ists), but instead use items, which now returns a "view" into the dictionary items. See the What's New document for Python 3.0, and the new documentation on views.
1: Inserti...