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c++ - Why is an assignment to a base class valid, but an assignment to a derived class a compilation error?

This was an interview question. Consider the following: struct A {}; struct B : A {}; A a; B b; a = b; ... an-assignment-to-a-base-class-valid-but-an-assignment-to-a-derived-class...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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460 views

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c# - Authorization has been denied for this request - New Web API Project

I just created new Web API project (using MVC) in visual studio 2015 and for the testing purpose, I ran that ... /authorization-has-been-denied-for-this-request-new-web-api-project...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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189 views

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testing - How do you measure the quality of your unit tests?

If you (or your organization) aspires to thoroughly unit test your code, how do you measure the success or quality of ... /262727/how-do-you-measure-the-quality-of-your-unit-tests...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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337 views

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c# - How to comment multiple lines with space or indent

In Visual Studio 2010, I have multiple lines of text to be commented: A B C Using CTRL+E+C to comment ... com/questions/14027598/how-to-comment-multiple-lines-with-space-or-indent...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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244 views

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C# Type suffix for decimal

I don't know what the correct wording is for what I am trying to achieve so it may already be posted ... ://stackoverflow.com/questions/5333489/c-sharp-type-suffix-for-decimal...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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183 views

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angular - Cannot find module './in-memory-data-service' in tour of heroes for Angular2

I am trying to work through the Angular2 tour of heroes app, and am running into bugs on the Http section of ... find-module-in-memory-data-service-in-tour-of-heroes-for-angular2...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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87 views

1 answer

java - How can I initialize a LinkedList with entries/values in it?

So I know how to have a linked list and use add method to input entries by entries. However, I do not want ... /10344040/how-can-i-initialize-a-linkedlist-with-entries-values-in-it...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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425 views

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reversing the order of an array in ruby

I have the following array [12,16,5,9,11,5,4] it prints: 12,16,5,9,11,5,4. I want it to ... https://stackoverflow.com/questions/5241185/reversing-the-order-of-an-array-in-ruby...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - How to pass parameters by POST to an Azure function?

I'm trying to do a simple Azure Function to learn about it. There will be 3 functions: 1 function to insert ... /45183820/how-to-pass-parameters-by-post-to-an-azure-function...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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77 views

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ios - Find list of Local Notification the app has already set

My app allows users to set a number of reminders in the future. When the app lauches I want to know what ... /17531332/find-list-of-local-notification-the-app-has-already-set...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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291 views

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java - Android: set just one padding of textview programmatically

I want to set the top padding of a textview programmatically. I know you can do this with the ... /questions/15556168/android-set-just-one-padding-of-textview-programmatically...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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166 views

1 answer

How to make select2 work with jquery.validation plugin?

I'm trying to validate select2 field using jquey.validation plugin but nothing happens. I want to make select ... /23825135/how-to-make-select2-work-with-jquery-validation-plugin...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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271 views

1 answer

How can I change text font in UIPickerView in iOS 7?

I was able to change my font color but I also need to change font size, how can I accomplish that? Here's my ... /20698547/how-can-i-change-text-font-in-uipickerview-in-ios-7...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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262 views

1 answer

python - PySpark: multiple conditions in when clause

I would like to modify the cell values of a dataframe column (Age) where currently it is blank ... stackoverflow.com/questions/37707305/pyspark-multiple-conditions-in-when-clause...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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204 views

1 answer

javascript - Proper way to send an Authenticity Token with AJAX to Rails

This works but gets stopped because it lacks an authenticity token: $(".ajax-referral").click(function(){ $.ajax({ ... /proper-way-to-send-an-authenticity-token-with-ajax-to-rails...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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543 views

1 answer

go - cap vs len of slice in golang

What is the difference between cap and len of a slice in golang? According to definition: A slice has both a ... /stackoverflow.com/questions/41668053/cap-vs-len-of-slice-in-golang...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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111 views

1 answer

List selectors for Objective-C object

I have an object, and I want to list all the selectors to which it responds. It feels like this ... //stackoverflow.com/questions/330030/list-selectors-for-objective-c-object...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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499 views

1 answer

xmlhttprequest - Return $.get data in a function using jQuery

I'm trying to call a function that contains jQuery code. I want this function to return the results of the ... .com/questions/1639555/return-get-data-in-a-function-using-jquery...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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219 views

1 answer

python - Sort filenames in directory in ascending order

(This question already has answers here): question from:https://stackoverflow.com/questions/33159106/sort-filenames-in-directory-in-ascending-order...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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312 views

1 answer

How to make select2 work with jquery.validation plugin?

I'm trying to validate select2 field using jquey.validation plugin but nothing happens. I want to make select ... /23825135/how-to-make-select2-work-with-jquery-validation-plugin...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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159 views

1 answer

AngularJS: Scroll to end of element after applying DOM changes

I have a simple list of items. I want to be able to scroll to the bottom of the element displaying the ... /17296837/angularjs-scroll-to-end-of-element-after-applying-dom-changes...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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273 views

1 answer

php - Laravel Broadcasting: Notification vs Event

I read laravel documentations about Events and Notifications, it seems we can fire an event and ... stackoverflow.com/questions/39314809/laravel-broadcasting-notification-vs-event...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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130 views

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r - How do you remove columns from a data.frame?

Not so much 'How do you...?' but more 'How do YOU...?' If you have a file someone gives you with ... stackoverflow.com/questions/7072159/how-do-you-remove-columns-from-a-data-frame...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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407 views

1 answer

swift - Setting statusbarStyle (deprecated in iOS 9.0)

Just downloaded the new xCode 10.0 and saw that the old statusBarStyle has been deprecated since iOS 9.0. ... .com/questions/50693665/setting-statusbarstyle-deprecated-in-ios-9-0...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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161 views

1 answer

javascript - Adding click event for a button created dynamically using jQuery

(This question already has answers here): question from:https://stackoverflow.com/questions/20253246/adding-click-event-for-a-button-created-dynamically-using-jquery...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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125 views

1 answer

Android scrollview hiding top content in layout

Im having a problem where the android scrollview starts hiding a pair of textviews I have at the top of ... .com/questions/9916317/android-scrollview-hiding-top-content-in-layout...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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241 views

1 answer

Ruby - Merge two arrays and remove values that have duplicate

I have two arrays a = [1, 2, 3, 4, 5] b = [2, 4, 6] I would like to merge the ... stackoverflow.com/questions/33862557/ruby-merge-two-arrays-and-remove-values-that-have-duplicate...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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179 views

1 answer

node.js - Apache Cordova - uninstall globally

I've installed cordova via npm and i did it globally, now i would like to remove it to reinstall ... :https://stackoverflow.com/questions/19523539/apache-cordova-uninstall-globally...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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