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language features - Why C# doesn't implement indexed properties?

I know, I know... Eric Lippert's answer to this kind of question is usually something like "because it wasn't worth ... see this feature in C# ? If not, why ? Question&Answers:os...

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

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84 views

1 answer

java - How do I add an image to a JButton

I am trying to add an image to a JButton and I'm not sure what I'm missing. When I run the following ... button = new JButton(water); frame.add(button); Question&Answers:os...

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

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179 views

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PHP variables in anonymous functions

I was playing around with anonymous functions in PHP and realized that they don't seem to reach variables ... the anonymous function can access the $variable? Question&Answers:os...

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

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175 views

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CSS Properties: Display vs. Visibility

What is difference between Display vs. Visibility properties? Question&Answers:os...

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

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257 views

1 answer

Playing a video in VideoView in Android

I can't figure out why I'm not able to play the video in my VideoView. All I'm getting for a message is: ... videoView.start(); } } Waiting for the reply... Question&Answers:os...

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

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186 views

1 answer

xcode - Swift Protocol Extensions overriding

I'm experimenting with Swift protocol extensions and I found this quite confusing behaviour. Could you help me how to get ... BUT I want it to be "Red color" Question&Answers:os...

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

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895 views

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python - scipy.misc module has no attribute imread?

I am trying to read an image with scipy. However it does not accept the scipy.misc.imread part. What could ... : 'module' object has no attribute 'imread' Question&Answers:os...

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

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372 views

1 answer

Visual Studio 2015 or 2017 shows IntelliSense errors but solution compiles

We are currently evaluating the new Visual Studio 2015 and encountered a strange problem with IntelliSense. When I ... Can anyone explain that behavior to me? Question&Answers:os...

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

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115 views

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javascript - Verify External Script Is Loaded

I'm creating a jquery plugin and I want to verify an external script is loaded. This is for an internal web ... of the script to verify it's actually loaded. Question&Answers:os...

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

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270 views

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Convert string to binary then back again using PHP

Is there a way to convert a string to binary then back again in the standard PHP library? To clarify what I' ... http://php.net/manual/en/function.hash-hmac.php Question&Answers:os...

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

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494 views

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Identity column value suddenly jumps to 1001 in sql server

This question already has answers here: Question&Answers:os...

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

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171 views

1 answer

C/C++ int[] vs int* (pointers vs. array notation). What is the difference?

I know that arrays in C are just pointers to sequentially stored data. But what differences imply the difference ... contexts to form a clear general view. Question&Answers:os...

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

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97 views

1 answer

c# - Loading XAML at runtime?

First some background: I'm working on an application and I'm trying to follow MVVM conventions writing ... another version would be simplified for beginners. Question&Answers:os...

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

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84 views

1 answer

How can I implement a C++ class in Python, to be called by C++?

I have a class interface written in C++. I have a few classes that implement this interface also written in C++. ... 10 } I hope this is sufficiently clear ;) Question&Answers:os...

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

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100 views

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Static fields on a null reference in Java

static members (static fields or static methods) in Java are associated with their respective class rather than the objects ... = 10. How does this code work? Question&Answers:os...

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

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334 views

1 answer

.net - "Or" equivalent in Linq Where() lambda expression

Is there a method in Linq where you can use to build SQL strings like "...where (a=1) OR (a=2)"? Question&Answers:os...

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

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862 views

1 answer

python - Django REST Framework upload image: "The submitted data was not a file"

I am leaning how to upload file in Django, and here I encounter a should-be-trivial problem, with the error ... upload, which sends image data in proper format. Question&Answers:os...

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

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86 views

1 answer

javascript - How to call fromLatLngToDivPixel in Google Maps API V3?

I know that method exists and is documented, but I don't know how to get an MapCanvasProjection object. Question&Answers:os...

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

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162 views

1 answer

Spring 3 MVC accessing HttpRequest from controller

I would like to handle request and session attributes myself rather then leave it to spring @SessionAttributes, for login ... . Do you have any advice on this? Question&Answers:os...

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

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500 views

1 answer

looping over all member variables of a class in python

How do you get a list of all variables in a class thats iteratable? Kind of like locals(), but for a class class ... () >>> e.as_list() bool143, bool2, foo Question&Answers:os...

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

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254 views

1 answer

angular - Angular2 Exception: Can't bind to 'routerLink' since it isn't a known native property

Obviously the beta for Angular2 is newer than new, so there's not much information out there, but I am ... working. Any pointers would be gratefully received! Question&Answers:os...

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

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536 views

1 answer

c# - How to resolve IOptions instance inside ConfigureServices?

Is it possible to resolve an instance of IOptions<AppSettings> from the ConfigureServices method in Startup? The ... I resolve IOptions<AppSettings> here? } Question&Answers:os...

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

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1.1k views

1 answer

three.js - Converting 3D position to 2d screen position [r69!]

I need Three.js code to convert 3D object coordinates to 2d ones in a 'div' element so that I can place ... : https://github.com/mrdoob/three.js/issues/5533 Question&Answers:os...

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

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251 views

1 answer

c++ - Do I have to acquire lock before calling condition_variable.notify_one()?

I am a bit confused about the use of std::condition_variable. I understand I have to create a unique_lock on ... this example wrong or is there some rationale? Question&Answers:os...

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

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329 views

1 answer

php - osx 10.10 Curl POST to HTTPS url gives SSLRead() error

I just recently upgraded to OSX 10.10 Yosemite and I since the upgrade I can't do Curl POST to a SSL url anymore ... after upgrade...). Can anyone help me out? Question&Answers:os...

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

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77 views

1 answer

Tensorflow NaN bug?

I'm using TensorFlow and I modified the tutorial example to take my RGB images. The algorithm works flawlessly out ... and just reached 92.5% at iteration 8600. Question&Answers:os...

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

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120 views

1 answer

How to call an rest api while bootstrapping angular 2 app

We would like to call a rest api when angular 2 app being bootstrapped, i mean first thing it should do about ... 2 beta or rc Reading data before app start up Question&Answers:os...

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

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291 views

1 answer

Streaming large files in a java servlet

I am building a java server that needs to scale. One of the servlets will be serving images stored in ... heavy. Any thoughts would be appreciated. Thanks. Question&Answers:os...

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

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