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angular - Behaviour subject initial value null?

private customer: Subject<Object> = new BehaviorSubject<Object>(null); setCustomer(id, accountClassCode) { this.customer. ... that is not null? See Question&Answers more detail:os...

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google cloud messaging - android GCM registration ID max length

In Google Cloud Messaging, what is exactly the registration ID maximum length? See Question&Answers more detail:os...

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How to reset form validation on submission of the form in ANGULAR 2

I have to reset my form along with validation. is there any method to reset the state of form from ng-dirty to ng-pristine. See Question&Answers more detail:os...

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php - Laravel pluck fields from relations

I have a Seller object which has a related User. I need to fill a select from LaravelCollective so I need to make ... >user->first_name; }); ?> See Question&Answers more detail:os...

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java - What is the default scheduler pool size in spring-boot?

I'm using spring-boot and @Scheduled annotation to execute some tasks. How can I find out what the ... executed after the first finished. See Question&Answers more detail:os...

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reactjs - redirect after a fetch post call

I am creating an social login page with an Access Management (AM) server. When user click on the login button ... content in the web browser? See Question&Answers more detail:os...

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sql - MySQL - SELECT * INTO OUTFILE LOCAL ?

MySQL is awesome! I am currently involved in a major server migration and previously, our small database used to ... of handling this problem? See Question&Answers more detail:os...

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strtotime - Working days (Mon-Fri) in PHP

Is there a way to use strtotime to add working days (Monday to Friday) to a date? Or some other method? What I want ... ( '+3 working days' ) ) See Question&Answers more detail:os...

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javascript - combine dynamic and static classes through css binding, knockout.js

In knockout.js we can use css binding for static classes <div data-bind="css: {'translucent ': number() < 10}"> ... Is there a way to do that? See Question&Answers more detail:os...

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c# - Injection of IUrlHelper in ASP.NET Core

In RC1, IUrlHelper could be injected in services (with services.AddMvc() in startup class) This doesn't work ... get that outside a controller. See Question&Answers more detail:os...

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build - How can the gradle plugin repository be changed?

I work at a big company with a strict policy forbidding the unfiltered use of outside libraries. We have ... completely obvious. Many Thanks! See Question&Answers more detail:os...

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ruby on rails - Counter Cache for a column with conditions?

I am new to the concept of counter caching and with some astronomical load times on one of my app's main pages ... so as to minimize load times? See Question&Answers more detail:os...

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Only show number buttons on Soft Keyboard in Android?

On the soft keyboard in Android you can set the soft keyboard to show the numbers instead of a-z keyboard using ... ...? Thanx for listening! See Question&Answers more detail:os...

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python - Is there a difference between "raise exception()" and "raise exception" without parenthesis?

Defining a parameterless exception: class MyException(Exception): pass When raised, is there any difference between: ... an overloaded syntax? See Question&Answers more detail:os...

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node.js - Running Cloud Functions locally gives error "functions.config() is not available"

Cloud Functions for Firebase was just recently released and I am following the instructions on a fresh install. Here ... am I missing here? See Question&Answers more detail:os...

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Python 3 dictionary with known keys typing

I'm using Python 3 typing feature for better autocomplete. Many times I have functions that return key/value ( ... best practice in that case? See Question&Answers more detail:os...

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How to output HTML from JSP <%! ... %> block?

I just started learning JSP technology, and came across a wall. How do you output HTML from a method in <% ... -optimal, it's still interesting. See Question&Answers more detail:os...

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operating system - Java's "os.name" for Windows 10?

In Java, we can see the property value of os.name to know the name of the underlying operating system: System ... the Microsoft auto-updater -? See Question&Answers more detail:os...

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Get rid of [dynamic] JavaScript views in Visual Studio

Since I installed Visual Studio 2010 from scratch about 2 months ago, it behaves slightly different when debugging ... tags in HTML files. See Question&Answers more detail:os...

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performance - SET vs. SELECT - What's the difference?

Can someone please identify the functional/performance differences, if any, between SET and SELECT in T-SQL? ... speed advantage over SET. See Question&Answers more detail:os...

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php - laravel 5.4 upload image

My controller code for upload file in laravel 5.4: if ($request->hasFile('input_img')) { if($request->file(' ... submit"> </div> </form> See Question&Answers more detail:os...

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Android text view color doesn't change when disabled

When I call setEnabled(false) for a TextView object the text color doesn't change. I expected it will be changed ... to normal. Any ideas ? See Question&Answers more detail:os...

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c - How is sleep implemented at the OS level?

I am just interested how sleep(time in ms) is implemented in a C library or basically at the OS level... ... "sleep()" function is implemented. See Question&Answers more detail:os...

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c# - DBNull if statement

I'm trying to execute a stored procedure and then use an if statement to check for null values and I'm ... ) Any help would be appreciated! See Question&Answers more detail:os...

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whitespace - How to show/reveal hidden or invisible characters in NetBeans?

How can you show/reveal hidden characters in NetBeans? In other editors, if this feature is turned on, a ... indentation, among other things.) See Question&Answers more detail:os...

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python - How can I use io.StringIO() with the csv module?

I tried to backport a Python 3 program to 2.7, and I'm stuck with a strange problem: >>> import io >>> ... with io.StringIO() in this scenario) See Question&Answers more detail:os...

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r - What does the function invisible() do?

R help explains invisible() as "a function that returns a temporarily invisible copy of an object". I have ... very much for your help. See Question&Answers more detail:os...

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python - _corrupt_record error when reading a JSON file into Spark

I've got this JSON file { "a": 1, "b": 2 } which has been obtained with Python json.dump method. ... it is not interpreting the file correctly? See Question&Answers more detail:os...

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