大约有 30,000 项符合查询结果(耗时:0.0706秒) [XML]

https://stackoverflow.com/ques... 

How to prevent form resubmission when page is refreshed (F5 / CTRL+R)

...ng redirects) you can hash some of the request parameters to make a string based on the content and then check that you haven't sent it already. //create digest of the form submission: $messageIdent = md5($_POST['name'] . $_POST['email'] . $_POST['phone'] . $_POST['comment']); //and check it ...
https://stackoverflow.com/ques... 

What's the difference between dynamic (C# 4) and var?

...h dynamic, properties / methods / operators / etc are resolved at runtime, based on the actual object. Very handy for talking to COM (which can have runtime-only properties), the DLR, or other dynamic systems, like javascript. ...
https://stackoverflow.com/ques... 

Are SVG parameters such as 'xmlns' and 'version' needed?

... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers. Draft saved Draft discarded ...
https://www.fun123.cn/reference/other/vr.html 

使用虚拟现实和App Inventor进行实验 · App Inventor 2 中文网

..., white, white, white); You can find some more textures for your demo here. As it was mentioned in the start of the section, JMini3d is using resource folder for textures rendering, so textures are now hard-coded. GvrActivity has several lifecycle callbacks, and one of ...
https://stackoverflow.com/ques... 

Where to define custom error types in Ruby and/or Rails?

...below, so that your validations will fail: def MyModel < ActiveRecord::Base validate :code_does_not_contain_hyphens def code_does_not_contain_hyphens errors.add(:code, "cannot contain hyphens") if code.include?("-") end end When validations are run, this method will piggy-back onto ...
https://stackoverflow.com/ques... 

How to go about formatting 1200 to 1.2k in java

...th to the rescue! You can put the suffix in a String or array and fetch'em based on power, or something like that. The division can also be managed around the power, i think almost everything is about the power value. Hope it helps! public static String formatValue(double value) { int power; S...
https://stackoverflow.com/ques... 

Django ManyToMany filter()

... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers. Draft saved Draft discarded ...
https://stackoverflow.com/ques... 

How do I use reflection to invoke a private method?

...a group of private methods in my class, and I need to call one dynamically based on an input value. Both the invoking code and the target methods are in the same instance. The code looks like this: ...
https://stackoverflow.com/ques... 

Most Pythonic way to provide global configuration variables in config.py? [closed]

..."username": "", "password": "", "MYSQL_PORT": 3306, "MYSQL_DATABASE": 'mydb', "MYSQL_DATABASE_TABLES": ['tb_users', 'tb_groups'] } __setters = ["username", "password"] @staticmethod def config(name): return App.__conf[name] @staticmethod def set(name, value): if...
https://stackoverflow.com/ques... 

Undocumented NSURLErrorDomain error codes (-1001, -1003 and -1004) using StoreKit

...nection errors could be the only reason to show alert view in your network based app. In any other case (e.g. incorrect username/password pair) I prefer to do some custom user friendly animation, OR just repeat the failed attempt again without any attention of the user. Especially if the user didn't...