大约有 40,000 项符合查询结果(耗时:0.0705秒) [XML]

https://stackoverflow.com/ques... 

Why am I getting an Exception with the message “Invalid setup on a non-virtual (overridable in VB) m

...ethods and sealed classes. While running a test using mock object, MOQ actually creates an in-memory proxy type which inherits from your "XmlCupboardAccess" and overrides the behaviors that you have set up in the "SetUp" method. And as you know in C#, you can override something only if it is marked ...
https://stackoverflow.com/ques... 

How can I get the current page name in WordPress?

...theme.php, inside the function get_page_template(), which is of course is called before your page theme files are parsed, so it is available at any point inside your templates for pages. Although it doesn't appear to be documented, the $pagename var is only set if you use permalinks. I guess this i...
https://stackoverflow.com/ques... 

How to access the correct `this` inside a callback?

...d inside each function and its value only depends on how the function was called, not how/when/where it was defined. It is not affected by lexical scopes like other variables (except for arrow functions, see below). Here are some examples: function foo() { console.log(this); } // normal functio...
https://stackoverflow.com/ques... 

String.Empty versus “” [duplicate]

...implies, there difference between String.Empty and “” are pretty small, but there is a difference. “” actually creates an object, it will likely be pulled out of the string intern pool, but still… while String.Empty creates no object… so if you are really looking for ultim...
https://stackoverflow.com/ques... 

How can I validate a string to only allow alphanumeric characters in it?

How can I validate a string using Regular Expressions to only allow alphanumeric characters in it? 10 Answers ...
https://stackoverflow.com/ques... 

Trimming a huge (3.5 GB) csv file to read into R

... expert at this, but you might consider trying MapReduce, which would basically mean taking a "divide and conquer" approach. R has several options for this, including: mapReduce (pure R) RHIPE (which uses Hadoop); see example 6.2.2 in the documentation for an example of subsetting files Alterna...
https://stackoverflow.com/ques... 

Can I change multiplier property for NSLayoutConstraint?

...them, since "Activating or deactivating the constraint calls addConstraint(_:) and removeConstraint(_:) on the view that is the closest common ancestor of the items managed by this constraint". – qix Jan 4 '17 at 5:26 ...
https://stackoverflow.com/ques... 

Location Services not working in iOS 8

... check whether the user is running iOS 8 or iOS 7. For example: #define IS_OS_8_OR_LATER ([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0) //In ViewDidLoad if(IS_OS_8_OR_LATER) { [self.locationManager requestAlwaysAuthorization]; } [self.locationManager startUpdatingLocation]; ...
https://stackoverflow.com/ques... 

map function for objects (instead of arrays)

... of obj1 sit on the 'prototype' of obj2 console.log(obj2) // Prints: obj2.__proto__ = { 'a': 1, 'b': 2, 'c': 3} console.log(Object.keys(obj2)); // Prints: an empty Array. for (key in obj2) { console.log(key); // Prints: 'a', 'b', 'c' } jsbin However, please do me a favor and av...
https://stackoverflow.com/ques... 

SVN: Is there a way to mark a file as “do not commit”?

...rtoiseSVN has a built in changelist, "ignore-on-commit", which is automatically excluded from commits. The command-line client does not have this, so you need to use multiple changelists to accomplish this same behavior (with caveats): one for work you want to commit [work] one for things you want...