大约有 9,600 项符合查询结果(耗时:0.0138秒) [XML]

https://stackoverflow.com/ques... 

Rails - Nested includes on Active Records?

... If anyone is doing a respond_to block to generate nested json, you can do something like: respond_to do |f| f.json do render json: event.to_json(include: {users: {include: :profile} }), status: :ok end end ...
https://stackoverflow.com/ques... 

I need to store postal codes in a database. How big should the column be?

... A postal code will typically reference a block on one side of the street. To find a broader region, you would select the first half of the postal code. Having this information in a separate table really won't help anything and would be more complicated to maintain. ...
https://stackoverflow.com/ques... 

Download multiple files with a single action

... This didn't work for me, because the file dialog "blocks" the other save dialogs to appear. What I did was something slightly hacky - the mousemove action registers only after the file dialog disappears, so I used that - but it's not tested. I will add it as another answer. ...
https://stackoverflow.com/ques... 

WebDriver: check if an element exists? [duplicate]

...g FindElementSafe instead of FindElement, I don't "see" the ugly try/catch block and I can use a simple Exists method. That would look something like this: IWebElement myLink = driver.FindElementSafe(By.Id("myId")); if (myLink.Exists) { myLink.Click(); } Here is how you extend IWebElement &a...
https://stackoverflow.com/ques... 

How to detect IE11?

...b the version number from a String.match() regular expression. A try-catch block is used to shorten the code, otherwise we'd need to test the array bounds for non-IE browsers. Note: The user-agent can be spoofed or omitted, sometimes unintentionally if the user has set their browser to a "compatibil...
https://stackoverflow.com/ques... 

Cordova: start specific iOS emulator image

... Good find ????. I simply commented out the block that validates validTargets and I was able to specify the full platform, ex: "--target="iPhone-6, 8.4"". Would be really nice if Cordova delegated target validation to ios-sim. – Kyle Fox ...
https://stackoverflow.com/ques... 

Is there a list of screen resolutions for all Android based phones and tablets? [closed]

...arsed list of screens: From http://www.emirweb.com/ScreenDeviceStatistics.php #################################################################################################### # Filter out same-sized same-dp screens and width/height swap. #####################################################...
https://stackoverflow.com/ques... 

Why catch and rethrow an exception in C#?

...n type and throw it, allowing it to be differentiated-by-type in the catch block... But yes, if your not the architect of the exception (I'm thinking JDBC's SQLException (Java again) here, which is disgustingly generic, and exposes getErrorCode() method... Hmmm... You've got a point, it's just that ...
https://stackoverflow.com/ques... 

Java Class.cast() vs. cast operator

... I cannot do casting. In that case I would wrap cls.cast(o) in a try catch block. I also agree with you that this is also better when compiler can't infer T. Thanks for the reply. – user1944408 Mar 4 '14 at 11:26 ...
https://stackoverflow.com/ques... 

What is the purpose of “return await” in C#?

...y: when combined with using (or, more generally, any return await in a try block). Consider these two versions of a method: Task<SomeResult> DoSomethingAsync() { using (var foo = new Foo()) { return foo.DoAnotherThingAsync(); } } async Task<SomeResult> DoSomethingA...