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angular - Argument of type 'string | null' is not assignable to parameter of type 'string'. Type 'null' is not assignable to type 'string'

I have a dotnetcore 20 and angular4 project that I am trying to create a userService and get the user ... localStorage.getItem('currentUser')); See Question&Answers more detail:os...

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regex - Add slash to the end of every url (need rewrite rule for nginx)

I try to get an "/" to every urls end: example.com/art should example.com/art/ I use nginx as webserver. I ... I think i should a rewrite rule?) See Question&Answers more detail:os...

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

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In Java: How to zip file from byte[] array?

My application is receiving email through SMTP server. There are one or more attachments in the email and email ... to achieve this outcome? See Question&Answers more detail:os...

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

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autolayout - iOS 8 UIPageViewController Applying Constraints After Transitions

My app has a multi-pane tutorial-style view that users swipe through to learn about the app. This is implemented ... of guesses at this point. See Question&Answers more detail:os...

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

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nsstring - How to add commas to number every 3 digits in Objective C?

If I have a number int aNum = 2000000 how do I format this so that I can display it as the NSString 2,000,000? See Question&Answers more detail:os...

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ios - How do I get the font name from an otf or ttf file?

I have used a custom font in my previous app. The file name was "ProximaNova-Regular.otf" and to load the font ... can I find what name to use? See Question&Answers more detail:os...

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unit testing - How do I get a jacoco coverage report using Android gradle plugin 0.10.0 or higher?

I'm trying to get a test coverage report using Gradle Android plugin 0.10.2. But I still can't get a ... for getting a jacoco coverage report? See Question&Answers more detail:os...

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viewflipper - Developing an Android Homescreen

I am working on an app that has a homescreen. This homescreen should behave like the android homescreen where you ... UI element. Any ideas? See Question&Answers more detail:os...

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xcode - How to create variable argument methods in Objective-C

Maybe this will be obviously simple for most of you, but could you please give an example how to ... stringWithFormat:, NSURL - urlWithFormat. See Question&Answers more detail:os...

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c# - DateTimePicker: pick both date and time

Is it possible to use DateTimePicker (Winforms) to pick both date and time (in the dropdown)? How do you ... to type the date/time manually? See Question&Answers more detail:os...

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Why does the enhanced GCC 6 optimizer break practical C++ code?

GCC 6 has a new optimizer feature: It assumes that this is always not null and optimizes based on that. Value ... because that is so unnatural. See Question&Answers more detail:os...

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Can someone explain the structure of a Pid (Process Identifier) in Erlang?

Can someone explain the structure of a Pid in Erlang? Pids looks like this: <A.B.C>, e.g. <0.30.0> , ... name ( {proc_name, Node} ! Message)? 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 MVC3 and Windows Auth on IIS keeps redirecting to /Account/Login

I'm running MVC3 and a windows auth web application. When I deploy to IIS6 it runs great until I hit a page ... file: http://pastie.org/1568510 See Question&Answers more detail:os...

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

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For loop in multidimensional javascript array

Since now, I'm using this loop to iterate over the elements of an array, which works fine even if I put ... arrays. Is this a better solution? 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 - View with continuous scroll; both horizontal and vertical

I have been struggling with this assignment for quite some time now. What I would like to develop is a scrollview or ... how? I can't 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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How can I select all elements without a given class in jQuery?

Given the following: <ul id="list"> <li>Item 1</li> <li class="active">Item 2</li> <li>Item 3</li ... AKA something like: $("ul#list li!active") See Question&Answers more detail:os...

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php - Laravel 5 not finding css files

I've just installed a Laravel 5 project on MAMP and my pages are not finding the css files. This is the ... I get the correct welcome page. 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# - Is async/await suitable for methods that are both IO and CPU bound?

The MSDN documentation appears to state that async and await are suitable for IO-bound tasks whereas Task.Run should be ... am I over-using it? See Question&Answers more detail:os...

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

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html - Why is the span's line-height useless?

First, let's see a piece of code: div { width:200px; height:200px; border:1px solid black; line-height:200px; } ... br>789<br>000</span></div> See Question&Answers more detail:os...

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

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Rendering HTML elements to <canvas>

Is there a way to have an arbitrary HTML element rendered in a canvas (and then access its buffer...). See Question&Answers more detail:os...

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

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scala - Joining Spark dataframes on the key

I have constructed two dataframes. How can we join multiple Spark dataframes ? For Example : PersonDf, ... combining PersonDf and ProfileDf? See Question&Answers more detail:os...

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

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concurrency - Memory effects of synchronization in Java

JSR-133 FAQ says: But there is more to synchronization than mutual exclusion. Synchronization ensures that memory ... the synchronized block? 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 - SurfaceView flashes black on load

I have a drawing app that takes about 2-5 seconds to load the drawing for complicated drawings (done via an ... to try, please post them. 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# - Put content in HttpResponseMessage object?

Several months ago, Microsoft decided to change up the HttpResponseMessage class. Before, you could simply pass a data ... issue? Thanks a lot. See Question&Answers more detail:os...

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

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node.js - How to solve npm install throwing fsevents warning on non-MAC OS?

Following warning is being thrown on npm install command - npm WARN optional SKIPPING OPTIONAL DEPENDENCY: [email protected]. ... relevant to our OS. 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 - Debugging in Maven?

Is it possible to launch a debugger such as jdb from Maven? I have a pom.xml file that compiles the project ... I have to use some plugin. 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 - Changing the background color of a UIAlertView?

I want to change the background color of my UIAlertView, but this doesn't appear to have a color attribute. 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 - Whatsapp Message Layout - How to get time-view in the same row

I was wondering how WhatsApp handles the time shown in every message. For those who don't know: If the ... Here is the requested screenshot: See Question&Answers more detail:os...

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

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