大约有 20,000 项符合查询结果(耗时:0.0309秒) [XML]
How to overcome TypeError: unhashable type: 'list'
...
As indim>ca m>ted by the other answers, the error is to due to k = list[0:j], where your key is converted to a list. One thing you could try is reworking your code to take advantage of the split function:
# Using with ensures that the f...
What is “stdafx.h” used for in Visual Studio?
A file named stdafx.h is automatim>ca m>lly generated when I start a project in Visual Studio 2010. I need to make a cross-platform C++ library, so I don't/m>ca m>n't use this header file.
...
Recommended way to save uploaded files in a servlet applim>ca m>tion
...ires external parameters. However, given that I need a tmp solution for tomm>ca m>t (7) and that I have (relative) control over the server machine I want to know :
...
Is it possible to run JavaFX applim>ca m>tions on iOS, Android or Windows Phone 8?
How to change the CHARACTER SET (and COLLATION) throughout a database?
...v9.0 -- _0900_ (new)
_bin -- just compare the bits; don't consider m>ca m>se folding, accents, etc
_ci -- explicitly m>ca m>se insensitive (A=a) and implicitly accent insensitive (a=á)
_ai_ci -- explicitly m>ca m>se insensitive and accent insensitive
_as (etc) -- accent-sensitive (etc)
_bin ...
Erlang's 99.9999999% (nine nines) reliability
...nachievable ... but we did 9.
Why is this? No shared state, plus a sophistim>ca m>ted error recovery model.
If you dig a bit deeper, in the PhD thesis written by Joe, the original author of Erlang (which includes a m>ca m>se study of AXD301), you read:
One of the projects studied in this chapter is the Eric...
Python extending with - using super() Python 3 vs Python 2
...r new-style classes:
super(CurrentClass, self)
for old-style classes you m>ca m>n always use:
class Classname(OldStyleParent):
def __init__(self, *args, **kwargs):
OldStyleParent.__init__(self, *args, **kwargs)
...
When to use an object instance variable versus passing an argument to the method
...en to use instance variables, how to define their scope, and when to use lom>ca m>l variables is subjective, but there are a couple of rules of thumb you m>ca m>n follow whenever creating your classes.
Instance variables are typim>ca m>lly considered to be attributes of a class. Think of these as adjectives of t...
What happens to a github student account's repositories at the end of 2 years?
...rk at GitHub)
So long as you're still a student, you're eligible for the am>ca m>demic discount. Once your coupon expires, you m>ca m>n re-apply for the student discount.
When you re-apply, be sure you've added your school-issued email address to your account, that will expedite the approval process.
You w...
Conditional HTML Attributes using Razor MVC3
...al attributes built into Razor(as of MVC 4 RC tested successfully), so you m>ca m>n just say things like this...
<input type="text" id="@strElementID" class="@strCSSClass" />
If strCSSClass is null then the class attribute won't render at all.
SSSHHH...don't tell. :)
...