大约有 7,900 项符合查询结果（耗时：0.0188秒） [XML]
Creating JS object with Object.create(null)?
...doesn't inherit from anything and thus has no properties at all.
In other words: A javascript object inherits from Object by default, unless you explicitly create it with null as its prototype, like: Object.create(null).
{} would instead be equivalent to Object.create(Object.prototype).
In Chro...
What is the rationale for all comparisons returning false for IEEE754 NaN values?
...nexceptional distinction between NaNs and numbers in languages that lack a word for NaN and a predicate IsNaN(x).
Note that this is also the logic that rules out returning something like a “Not-A-Boolean”. Maybe this pragmatism was misplaced, and the standard should have required isnan( ), ...
Why is there no Constant feature in Java?
... have learned that Java allows us to declare constants by using final keyword.
8 Answers
...
ASP.NET MVC - Should business logic exist in controllers?
...& Practices. And I believe in the adage 'A picture is worth a thousand words'.
share
|
improve this answer
|
follow
|
...
What is reflection and why is it useful?
...
So in other words, you can create an instance out of it's qualified name and the compiler won't complain about it (because say you use just a String for the class name). Then, at run time, if that class is not present you get an exceptio...
Checking for a dirty index or untracked files with Git
...e git status and look at the output. But we don't want to rely on specific words showing up, so we use the --porcelain mode introduced in 1.7.0; when enabled, a clean directory results in no output.
Then we use test -n to see if there was any output or not.
This command will return 1 if the workin...
What's the difference of “./configure” option “--build”, “--host” and “--target”?
...ts to host, host to build, and build to the result of config.guess."
In a word, build the code on --build, run it on --host with --target architecture environment.
share
|
improve this answer
...
Java, Classpath, Classloading => Multiple Versions of the same jar/project
...pends on the classloader policy which is by default Parent First. In other words child class will first ask its parent to load the class and will load only if the entire hierarchy failed to load it, no??
– deckingraj
Nov 20 '13 at 6:22
...
AngularJS : How to watch service variables?
...r consuming controller has multiple possible sources of the data; in other words, if you have a MIMO situation (Multiple Input/Multiple Output). If you're just using a one-to-many pattern, you should be using direct object referencing and letting the Angular framework do the two-way binding for you....
What is the reason for performing a double fork when creating a daemon?
...parent the daemon process to init; the daemon's parent must exit. In other words, the parent always exits when forking a proper daemon so that the daemon process is re-parented to init.
So why the double fork? POSIX.1-2008 Section 11.1.3, "The Controlling Terminal", has the answer (emphasis added):...