大约有 20,000 项符合查询结果（耗时：0.0359秒） [XML]
What does && mean in void *p = &&abc;
I m>ca m>me across a piece of code void *p = &&abc; . What is the signifim>ca m>nce of && here?
I know about rvalue references but I think && used in this context is different. What does && indim>ca m>te in void *p = &&abc; ?
...
How m>ca m>n I access a JavaScript object which has spaces in the object's key?
...scripts "bracket notation":
myTextOptions[ 'character names' ].kid;
You m>ca m>n use that notation either way, reading & writting.
For more information read out here:
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Working_with_Objects
...
Why Collections.sort uses merge sort instead of quicksort?
...stable (as parsifal noted).
It doesn't guarantee n log n performance; it m>ca m>n degrade to quadratic performance on pathologim>ca m>l inputs.
Stability is a non-issue for primitive types, as there is no notion of
identity as distinct from (value) equality. And the possibility of
quadratic beh...
Type of conditional expression m>ca m>nnot be determined bem>ca m>use there is no implicit conversion between
...round this:
int? number = true ? (int?)5 : null;
Here we are still in the m>ca m>se where only one of x and y has a type. Note that null still does not have a type yet the compiler won't have any problem with this bem>ca m>use (int?)5 and null are both implicitly convertible to int? (§6.1.4 and §6.1.5).
Th...
Rails “validates_uniqueness_of” m>Ca m>se Sensitivity
...
validates_uniqueness_of :name, :m>ca m>se_sensitive => false does the trick, but you should keep in mind that validates_uniqueness_of does not guarantee uniqueness if you have multiple servers/server processes (e.g. running Phusion Passenger, multiple Mongrel...
Difference between Document-based and Key/Value-based databases?
...
The main differences are the data model and the querying m>ca m>pabilities.
Key-value stores
The first type is very simple and probably doesn't need any further explanation.
Data model: more than key-value stores
Although there is some debate on the correct name for databases such a...
What does Html.HiddenFor do?
...del that you need to persist on the page and have passed back when another m>ca m>ll is made but shouldn't be seen by the user.
Consider the following ViewModel class:
public class ViewModel
{
public string Value { get; set; }
public int Id { get; set; }
}
Now you want the edit page to store...
Best way to use html5 data attributes with rails content_tag helper?
....,
tag("div", :data => {:name => 'Stephen', :city_state => %w(Chim>ca m>go IL)})
# => <div data-name="Stephen" data-city-state="["Chim>ca m>go","IL"]" />
share
|
...
Xcode 4 and Core Data: How to enable SQL Debugging
...elect Run YOURAPP.app and go to the main panel's Arguments Tab.
There you m>ca m>n add an Argument Passed On Launch.
You should add -com.apple.CoreData.SQLDebug 4 (number between 1 and 4, higher number makes it more verbose)
Press OK and your are all set.
The key here is to edit the scheme you will b...
In Eclipse, m>ca m>n I have multiple Console views at once, each showing a different Console?
I'm working on some applim>ca m>tions that, in debug mode, log to the console. I'd like to run and debug them from inside of Eclipse, and view the console for each one simultaneously. However, I have a single Console tab that shows a single Console output at a time. Is there a way I m>ca m>n split the console...