大约有 45,000 项符合查询结果（耗时：0.0327秒） [XML]
Does Python have “private” variables in classes?
... self.__var = 123
def printVar(self):
print self.__var
Now, if you try to access __var outside the class definition, it will fail:
>>>x = A()
>>>x.__var # this will return error: "A has no attribute __var"
>>>x.printVar() # this gives back 123
Bu...
How do I configure different environments in Angular.js?
... is generated via grunt
var app = angular.module('myApp', [ 'config' ]);
Now my constants can be dependency injected where needed. E.g.,
app.controller('MyController', ['ENV', function( ENV ) {
if( ENV === 'production' ) {
...
}
}]);
...
What is the Python equivalent of Matlab's tic and toc functions?
...TicToc, marks the beginning of a time interval
toc(False)
That's it! Now we are ready to fully use tic() and toc() just as in Matlab. For example
tic()
time.sleep(5)
toc() # returns "Elapsed time: 5.00 seconds."
Actually, this is more versatile than the built-in Matlab functions. Here, ...
Programmatically open new pages on Tabs
... a hint on what is going to happen before they click on the link.
Let me know if it works on other browser too (I don't have a chance to try it on other browser than Firefox at the moment).
Edit: added reference for ie7
Maybe this link can be useful
http://social.msdn.microsoft.com/forums/en-US/ie...
How do I do a not equal in Django queryset filtering?
...django.db.models.fields import Field
Field.register_lookup(NotEqual)
And now you can use the __ne lookup in your queries like this:
results = Model.objects.exclude(a=True, x__ne=5)
share
|
impro...
Ruby: require vs require_relative - best practice to workaround running in both Ruby =1.
...
The backports gem now allows individual loading of backports.
You could then simply:
require 'backports/1.9.1/kernel/require_relative'
# => Now require_relative works for all versions of Ruby
This require will not affect newer versions,...
Code Golf: Lasers
... $_.
$s="#";
$s is the symbol of whatever the beam is sitting on top of now. Since the laser emitter is to be treated like a wall, set this to be a wall to begin with.
if (tr/v<^/>v</) {
my $o;
$o .= "\n" while s/.$/$o .= $&, ""/meg;
tr,/\\,\\/, for $o, $s;
$_ = $o;
}
If t...
Find all packages installed with easy_install/pip?
...
As of version 1.3 of pip you can now use pip list
It has some useful options including the ability to show outdated packages. Here's the documentation: https://pip.pypa.io/en/latest/reference/pip_list/
...
Catch a thread's exception in the caller thread in Python
...the child thread, and it is in its own stack. One way I can think of right now to communicate this information to the parent thread is by using some sort of message passing, so you might look into that.
Try this on for size:
import sys
import threading
import Queue
class ExcThread(threading.Thre...
How to install Boost on Ubuntu
...
Do not use the packaged version of boost, right now on Ubuntu 16.04 it's 1.58, and the latest stable version is 1.67.0 ! See the response and my comment below : stackoverflow.com/a/41272796/2617716
– Jeb
Apr 18 '18 at 11:45
...