大约有 45,010 项符合查询结果(耗时:0.0471秒) [XML]

https://stackoverflow.com/ques... 

list every font a user's browser can display

...families) that the browser can show? (I want to give the user a dropdown with a list of all available fonts, and allow the user to choose a font.) I'd prefer not to have to hardcode this list ahead of time or send it down from the server. (Intuitively, it seems like the browser should know what fo...
https://stackoverflow.com/ques... 

How can I convert a string to a number in Perl?

I have a string which holds a decimal value in it and I need to convert that string into a floating point variable. So an example of the string I have is "5.45" and I want a floating point equivalent so I can add .1 to it. I have searched around the internet, but I only see how to convert a string t...
https://stackoverflow.com/ques... 

What is Python used for? [closed]

What is Python used for and what is it designed for? 2 Answers 2 ...
https://stackoverflow.com/ques... 

How do I get the path of the current executed file in Python?

This may seem like a newbie question, but it is not. Some common approaches don't work in all cases: 13 Answers ...
https://stackoverflow.com/ques... 

Vagrant's port forwarding not working [closed]

... of just more comments. First thing: try curl 'http://localhost:80' from within the VM. If that doesn't work, then it's definitely not the port forwarding. Next: try curl -v 'http://localhost:4567/' from your host machine. Curl might give you a better error message than Safari. I'd check that t...
https://stackoverflow.com/ques... 

HTML5 LocalStorage: Checking if a key exists [duplicate]

... Quoting from the specification: The getItem(key) method must return the current value associated with the given key. If the given key does not exist in the list associated with the object then this method must return null. You should actually check against null....
https://stackoverflow.com/ques... 

Convert a Git folder to a submodule retrospectively?

Quite often it is the case that you're writing a project of some kind, and after a while it becomes clear that some component of the project is actually useful as a standalone component (a library, perhaps). If you've had that idea from early on, then there's a fair chance that most of that code is ...
https://stackoverflow.com/ques... 

Immutability of Strings in Java

... str is not an object, it's a reference to an object. "Hello" and "Help!" are two distinct String objects. Thus, str points to a string. You can change what it points to, but not that which it points at. Take this code, for example: String s1 = "He...
https://stackoverflow.com/ques... 

What is PECS (Producer Extends Consumer Super)?

...dr: "PECS" is from the collection's point of view. If you are only pulling items from a generic collection, it is a producer and you should use extends; if you are only stuffing items in, it is a consumer and you should use super. If you do both with the same collection, you shouldn't use either ext...
https://stackoverflow.com/ques... 

How do I create a self-signed certificate for code signing on Windows?

... If you're using an older version such as Windows 7, you'll need to stick with MakeCert or another solution. Some people suggest the Public Key Infrastructure Powershell (PSPKI) Module. Original Answer While you can create a self-signed code-signing certificate (SPC - Software Publisher Certificat...