大约有 42,000 项符合查询结果（耗时：0.0877秒） [XML]
Is there a JavaScript / jQuery DOM change listener?
...butes as well as structural changes. The draft spec has a full list of valid mutation listener properties:
childList
Set to true if mutations to target's children are to be observed.
attributes
Set to true if mutations to target's attributes are to be observed.
characterData
Set to true if mu...
Efficient evaluation of a function at every cell of a NumPy array
...
I am afraid that the vectorized function cannot be faster than the "manual" double loop iteration and assignment through all the array elements. Especially, because it stores the result to a newly created variable (and not directly to...
What is the difference between an annotated and unannotated tag?
...
TL;DR
The difference between the commands is that one provides you with a tag message while the other doesn't. An annotated tag has a message that can be displayed with git-show(1), while a tag without annotations is just a named pointer to a commit.
More About Lightweight Tags
Ac...
Determining type of an object in ruby
...be particular about the type.
For example, object.is_a?(String) is too rigid since another class might implement methods that convert it into a string, or make it behave identically to how String behaves. object.respond_to?(:to_s) would be a better way to test that the object in question does what ...
In C++, what is a “namespace alias”?
...the SO "feature" of answering your own questions should not be used to provide paraphrases of such books.
– anon
Jul 31 '09 at 9:02
25
...
In AngularJS, what's the difference between ng-pristine and ng-dirty?
...rm has not been modified by the user. So ng-dirty and ng-pristine are two sides of the same story.
The classes are set on any field, while the form has two properties, $dirty and $pristine.
You can use the $scope.form.$setPristine() function to reset a form to pristine state (please note that this...
Cleanest and most Pythonic way to get tomorrow's date?
... of the week that March 3rd, 2055 will land on.
– David Woods
Mar 4 '13 at 14:04
1
@DavidWoods: l...
Will ConfigurationManager.AppSettings[“blah”] throw an exception if “blah” doesn't exist?
...wer to your question is No like @Tim mentioned. The page pointed to just said that if appsettings are not able to be loaded then an exception is thrown. But if a value is just not present in the appsettings then you will not get an exception. It really wouldn't make sense to throw an error just beca...
WPF Application that only has a tray icon
...me pointers how to write an application that starts minimized to tray. The idea is that it periodically fetches an RSS Feed and creates a Toaster-Popup when there are new feeds.
...
what's the difference between “hadoop fs” shell commands and “hdfs dfs” shell commands?
...gument to hadoop fs commands (e.g. hdoop fs -ls file:///). If nothing is said, it defaults to hdfs schema, AFAIK (hdoop fs -ls / == hadoop fs -ls hdfs:///).
– frb
Mar 9 '15 at 12:04
...