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javascript - How to convert an Observable into a BehaviorSubject?

I'm trying to convert an Observable into a BehaviorSubject. Like this: a$ = new Observable() b$ = ... /questions/53372138/how-to-convert-an-observable-into-a-behaviorsubject...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - PCA For categorical features?

In my understanding, I thought PCA can be performed only for continuous features. But while trying to ... ://stackoverflow.com/questions/40795141/pca-for-categorical-features...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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AngularJS intellisense not working on Visual Studio 2015

According to this post intellisense should also be working on the new VS 2015, but so far I only ... /questions/29830266/angularjs-intellisense-not-working-on-visual-studio-2015...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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hyperlink - How do I dynamically enable/disable links with jQuery?

I have some links displayed on a page. I would like to enable/disable them based on other events on the ... questions/3788946/how-do-i-dynamically-enable-disable-links-with-jquery...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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OAuth's tokens and sessions in REST

The other minute I read an article on OAuth. It described especially the tokens being exchanged between client ... .com/questions/1672530/oauths-tokens-and-sessions-in-rest...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python 2.7 - Selecting specific fields using select_related in Django

I have two models Article and Blog related using a foreign key. I want to select only blog name ... /questions/35524259/selecting-specific-fields-using-select-related-in-django...

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Scala foreach strange behaviour

I want to iterate over a list of values using a beautiful one-liner in Scala. For example, this one ... :https://stackoverflow.com/questions/2173373/scala-foreach-strange-behaviour...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Cropping an image with Python Pillow

I installed Python Pillow and am trying to crop an image. Other effects work great (for example, ... stackoverflow.com/questions/20361444/cropping-an-image-with-python-pillow...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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debugging - Debug Gradle plugins with IntelliJ

Problem I want to use the interactive debugger with IntelliJ. Unfortunately, I can't convince IntelliJ ... stackoverflow.com/questions/11129401/debug-gradle-plugins-with-intellij...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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iphone - How to change a particular color in an image?

My question is if I have a Lion image just I want to change the color of the lion alone not the background ... com/questions/8046643/how-to-change-a-particular-color-in-an-image...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - How to use CMAKE_EXPORT_COMPILE_COMMANDS?

I've been trying to use clang-modernize with CMAKE_EXPORT_COMPILE_COMMANDS as recommended in the help of this tool. ... /questions/20059670/how-to-use-cmake-export-compile-commands...

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python - Why are dict lookups always better than list lookups?

I was using a dictionary as a lookup table but I started to wonder if a list would be better for my ... /questions/43690191/why-are-dict-lookups-always-better-than-list-lookups...

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css - rel=preload for stylesheet isn't applying the styles once downloaded

I'm trying out rel=preload for the first time, using it for a couple of stylesheets. Here is the ... 46787921/rel-preload-for-stylesheet-isnt-applying-the-styles-once-downloaded...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Angular error - Generic type 'ModuleWithProviders<T>' requires 1 type argument(s)

After upgrading from Angular version 8 to 10. Running the - ng serve command gives me error - ... /angular-error-generic-type-modulewithproviderst-requires-1-type-arguments...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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http - Fetch a file from a local url with Python requests?

I am using Python's requests library in one method of my application. The body of the method looks like this: def ... /10123929/fetch-a-file-from-a-local-url-with-python-requests...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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jenkins installation windows 10 "Service Logon Credentials"

I don't know Jenkins at all. I want to install Jenkins on Windows 10. I downloaded the ... com/questions/63410442/jenkins-installation-windows-10-service-logon-credentials...

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facebook - FB.getLoginStatus() called before calling FB.init()

I've this message in my console FB.getLoginStatus() called before calling FB.init(). My code <div id ... .com/questions/12810018/fb-getloginstatus-called-before-calling-fb-init...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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desktop - Using Modernizr to test for tablet and mobile - Opinions wanted

I want to use Modernizr to detect whether a user is view a site on a desktop, tablet or mobile device. My ... /7928200/using-modernizr-to-test-for-tablet-and-mobile-opinions-wanted...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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cocoa - Dynamically invoke a class method in Objective C

Suppose I have Objective C interface SomeClass which has a class method called someMethod: @interface SomeClass : ... /1781046/dynamically-invoke-a-class-method-in-objective-c...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Assert that Optional has certain value

I have a Java method that returns an Optional. I'd like to write an easy-to-read unit test for it ... ://stackoverflow.com/questions/38954742/assert-that-optional-has-certain-value...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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iphone - "no valid aps-environment entitlement found for application"

I am encountering this error when I am loading an Ad Hoc build of my Push Notification enabled iPhone ... /2452086/no-valid-aps-environment-entitlement-found-for-application...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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android - How to get app market version information from google play store?

How can I get the application version information from google play store for prompting the user for force/recommended ... -get-app-market-version-information-from-google-play-store...

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Adapt layout to Android platform or API level

For the application I am currently developing, I need to adapt the layout of the different activities to the ... /questions/6536079/adapt-layout-to-android-platform-or-api-level...

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c# - LIKE query with Entity Framework

(This question already has answers here): question from:https://stackoverflow.com/questions/11786664/like-query-with-entity-framework...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Get content of a DIV using JavaScript

I have two DIV's called DIV1 and DIV2 and DIV1 consists of dynamic content and DIV2 is empty. I need ... /stackoverflow.com/questions/8647216/get-content-of-a-div-using-javascript...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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How to sanitize sql fragment in Rails

I have to sanitize a part of sql query. I can do something like this: class << ActiveRecord::Base ... stackoverflow.com/questions/3009023/how-to-sanitize-sql-fragment-in-rails...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Using Job Scheduler in Android API <21

I was looking at a scheduling tutorial by Vogella. It mentions the Job Scheduler API that was introduced in API ... .com/questions/28563543/using-job-scheduler-in-android-api-21...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - Global variables in Karma test runner

I have a global variable defined in my main template, which I use to store information bits from the ... stackoverflow.com/questions/19263586/global-variables-in-karma-test-runner...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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