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sql - Best way to count records by arbitrary time intervals in Rails+Postgres

My app has a Events table with time-stamped events. I need to report the count of events during each of the ... of doubling the table width)? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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jquery - How can I give control back (briefly) to the browser during intensive JavaScript processing?

I have read the post here about using setTimeout() during intensive DOM processing (using JavaScript), but how can I ... </option>' ); } } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Spring @Transactional not working

I previously had a post on this issue that was resolved. However since rebuilding the project with auto wired beans ... { return dataSource; } } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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sql - What's the proper index for querying structures in arrays in Postgres jsonb?

I'm experimenting with keeping values like the following in a Postgres jsonb field in Postgres 9.4: [{" ... data to json array elements. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Google Drive PHP API - Simple File Upload

I am trying to write a small script to upload a local file to Google Drive, using Google Drive PHP API. The ... PHP API? Thank you in advance! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Android SDK location

I have Xamarin Studio, and I need to specify the Android SDK Location. I have previously had Xamarin Studio working ... and what should I do? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - "Content is not allowed in prolog" when parsing perfectly valid XML on GAE

I've been beating my head against this absolutely infuriating bug for the last 48 hours, so I thought I'd finally ... some light on it? Thanks! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Insert data using Entity Framework model

I'm trying to insert some data in my database using Entity Framework model, but for some unknown reasons to me, ... t); context.SaveChanges(); } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - namespace naming conventions

For those of you out there writing reusable components, what do you consider to be best practice if you're extending ... I use System.Net.Mail ? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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iOS 8 Rotation Methods Deprecation - Backwards Compatibility

In iOS 8, the methods for interface rotation are deprecated. This includes: willRotateToInterfaceOrientation:duration ... now interface oriented See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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What does #x inside a C macro mean?

For example I have a macro: #define PRINT(int) printf(#int "%d ",int) I kinda know what is the result. But ... kindely give me a hint? Thanks! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby - Pressing Ctrl + A in Selenium WebDriver

Is there a way to press the Ctrl + A keys using Selenium WebDriver? I checked the Selenium libraries and ... special and function keys only. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c - How to use Fused Multiply-Add (FMA) instructions with SSE/AVX

I have learned that some Intel/AMD CPUs can do simultanous multiply and add with SSE/AVX: FLOPS per ... FMA instruction or micro-operation? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Run PowerShell function from Python script

I have a need to run a PowerShell function from a Python script. Both the .ps1 and the .py files ... parameters to the function. Thanks! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - jQuery - Increase the value of a counter when a button is clicked

I'm making a system where a user clicks a button and their score increases. There is a counter which I would like to ... </div> </body> </htlm> See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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What's the difference between gcc and g++/gcc-c++?

It seems to me that gcc can deal with both c and c++ projects,so why is g++/gcc-c++ needed? What's the difference between g++ and gcc-c++? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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security - Symfony2 extending DefaultAuthenticationSuccessHandler

I want to alter default authentication process just after authentication success. I made a service ... : @pkr_blog_user.wp_transitional_encoder See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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algorithm - How does one convert 16-bit RGB565 to 24-bit RGB888?

I've got my hands on a 16-bit rgb565 image (specifically, an Android framebuffer dump), and I would ... is DDMS converting its screenshots? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ASP.NET MVC 4 intercept all incoming requests

Is there a way for me to catch all incoming requests to my ASP.NET MVC 4 app and run some code before ... some things with the other service. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - ASP .NET MVC Disable Client Side Validation at Per-Field Level

I'm using ASP .NET MVC 3 with Data Annotations and the jQuery validate plugin. Is there a way to mark ... other validation to run client side. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - OpenCV - Apply mask to a color image

How can I apply mask to a color image in latest python binding (cv2)? In previous python binding ... workaround without using boilerplate code? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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sql - Group mysql query by 15 min intervals

I've got a monitoring system that is collecting data every n seconds (n is approximately 10 but varies). I'd ... to allow for grouping to work? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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456 views

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php - How to embed images in html email

I'm trying to implement a code to send HTML email with embedded image. I already tried for simple HTML email ... image is taken from server. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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334 views

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Java: Global Exception Handler

Is there a way to make a global exception-handler in Java. I want to use like this: "When an exception is ... in a try-catch body. Martijn See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Mixing keyword with regular arguments in Ruby?

Ruby 2.0 supports keyword arguments. I was wondering, what are the 'rules' for mixing regular with keyword arguments? ... 't seem to find any. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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177 views

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Android ListView with onClick items

I'm a new programmer and new in Android. I'm using this example http://www.androidhive.info/2012/09/android- ... 't really know where to start See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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rust - How can this instance seemingly outlive its own parameter lifetime?

Before I stumbled upon the code below, I was convinced that a lifetime in a type's lifetime parameter would ... reasoning of the compiler here? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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iphone - MKAnnotationView - Lock custom annotation view to pin on location updates

Update #5 I guess it's bounty time. 100+ views and no one's taken a stab, even with the code sample ... region]; [UIView commitAnimations]; } } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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