大约有 40,000 项符合查询结果（耗时：0.0663秒） [XML]
All Ruby tests raising: undefined method `authenticate' for nil:NilClass
Most of my tests are raising the following and I don't understand why. All methods call raise the 'authenticate' error. I've checked the code if there was a method called "authenticate" but there is no such method.
...
Differences and relationship between glActiveTexture and glBindTexture
...ve "texture unit". Each texture unit can have multiple texture targets (usually GL_TEXTURE_1D, 2D, 3D or CUBE_MAP).
4 Answe...
How to check for an undefined or null variable in JavaScript?
...ese two lines are equivalent:
if ( typeof(some_variable) !== "undefined" && some_variable !== null ) {}
if ( some_variable != null ) {}
Note 1
As mentioned in the question, the short variant requires that some_variable has been declared, otherwise a ReferenceError will be thrown. However...
How do I get Pyflakes to ignore a statement?
...
# noqa only ignores certain warnings/errors, but not all -- in order to deal with this, a workaround involves installing/using the package at pypi.python.org/pypi/flake8-respect-noqa
– Mark
Jan 18 '16 at 0:15
...
Python (and Python C API): __new__ versus __init__
...vs immutable types.
__new__ accepts a type as the first argument, and (usually) returns a new instance of that type. Thus it is suitable for use with both mutable and immutable types.
__init__ accepts an instance as the first argument and modifies the attributes of that instance. This is inappropr...
Set Page title using UI-Router
...ate) {
var title = 'Default Title';
if (toState.data && toState.data.pageTitle) title = toState.data.pageTitle;
$timeout(function() {
element.text(title);
}, 0, false);
};
$rootScope.$on('$stateChangeSuccess', listener);
...
Using pip behind a proxy with CNTLM
...
An example call would look like: SET HTTPS_PROXY = https://512893:Pass%23h98@proxy.example.com:6050 for username 512893 & password pass#h98. Remember to url encode special characters in password or username (# in this case). ...
How do I overload the square-bracket operator in C#?
DataGridView, for example, lets you do this:
8 Answers
8
...
Understanding Python super() with __init__() methods [duplicate]
...can be nice. But the main advantage comes with multiple inheritance, where all sorts of fun stuff can happen. See the standard docs on super if you haven't already.
Note that the syntax changed in Python 3.0: you can just say super().__init__() instead of super(ChildB, self).__init__() which IMO is...
How to parse a query string into a NameValueCollection in .NET
I would like to parse a string such as p1=6&p2=7&p3=8 into a NameValueCollection .
19 Answers
...