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inheritance - When to use val or def in Scala traits?

I was going through the effective scala slides and it mentions on slide 10 to never use val in a trait for ... in a trait for abstract methods 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# - Add separator to string at every N characters?

I have a string which contains binary digits. How to separate string after each 8 digit? Suppose the string is: string ... . How can I do this? See Question&Answers more detail:os...

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

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Custom dialog on Android: How can I center its title?

I'm developing an Android application. How can I center the title for a custom dialog that I'm using? See Question&Answers more detail:os...

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

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ajax - Pure JavaScript code for HTTP Basic Authentication?

Where can I find reference code that implements a HTTP Basic Authentication client in pure JavaScript, suitable for ... , PHP frameworks, etc. 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# - IIS WCF service hosting vs Windows Service

We developed a WCF service and we're looking to deploy it. Our clients will be using it with ... file question regarding <baseAddresses>) See Question&Answers more detail:os...

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

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What's the best way to open and read a file in Perl?

Please note - I am not looking for the "right" way to open/read a file, or the way I should open/read a ... of opening and reading in a file? See Question&Answers more detail:os...

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

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curl - Run composer with a PHP script in browser

Wondering if it's possible to execute composer from the browser with a little PHP wrapper as I don't have access ... you can do this with cURL? See Question&Answers more detail:os...

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

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222 views

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java - Running Selenium scripts with JMeter

I have Selenium automation scripts ready with functional flow, now I want to integrate those scripts with ... load or performance testing. 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 - Can I use non existing CSS classes?

I have a table where I show/hide a full column by jQuery via a CSS class that doesn't exist: <table> <thead> ... there a better way to do this? 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 - How do I make a transparent canvas in html5?

How can I make a canvas transparent? I need to because I want to put two canvases on top of one another. See Question&Answers more detail:os...

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

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.net - What's the difference between a dependency property and an attached property in WPF?

What's the difference between a (custom) dependency property and an attached property in WPF? What are ... the implementations typically differ? 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++ - Now that we have std::array what uses are left for C-style arrays?

std::array is vastly superior to the C arrays. And even if I want to interoperate with legacy code, I can ... ever want an old-school array? See Question&Answers more detail:os...

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

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testing - Order of execution of tests in TestNG

How to customize the order of execution of tests in TestNG? For example: public class Test1 { @Test public void ... which they've been written? 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 do you generate a random double uniformly distributed between 0 and 1 from C++?

How do you generate a random double uniformly distributed between 0 and 1 from C++? Of course I can think ... platforms are Linux and Windows. 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 do I name the "row names" column in r

I'm working with a data frame in r where my row names are meaningful. Hence, I would like to give the column of ... a name. How do I do this? 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 do I catch exceptions / missing pages in Laravel 5?

In Laravel 5, App::missing and App::error is not available, so how do your catch exceptions and missing ... regarding this in the documentation. 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++ - How to get the number of characters in a std::string?

How should I get the number of characters in a string in C++? See Question&Answers more detail:os...

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

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310 views

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Rails 3 execute custom sql query without a model

I need to write a standalone ruby script that is supposed to deal with database. I used code given below in rails ... | puts row["email"] end See Question&Answers more detail:os...

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

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348 views

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In Java 8, why is the default capacity of ArrayList now zero?

As I recall, before Java 8, the default capacity of ArrayList was 10. Surprisingly, the comment ... = DEFAULTCAPACITY_EMPTY_ELEMENTDATA; } 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 - BitmapFactory.decodeStream returning null when options are set

I'm having issues with BitmapFactory.decodeStream(inputStream). When using it without options, it will return an image. ... (is, null, options); See Question&Answers more detail:os...

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

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swift - iOS 11 disable password autofill accessory view option?

As of now I would like to opt out of the new option iOS 11 gives, that is to suggest passwords in the app. When ... is the same as pre iOS 11? See Question&Answers more detail:os...

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

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414 views

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linux - How to convert Windows end of line in Unix end of line (CR/LF to LF)

I'm a Java developer and I'm using Ubuntu to develop. The project was created in Windows with Eclipse and it's ... be used to do this? How? See Question&Answers more detail:os...

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

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php - Laravel - Pass more than one variable to view

I have this site and one of its pages creates a simple list of people from the database. I need to add one ... ->with('persons', $persons); } See Question&Answers more detail:os...

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

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database design - MySQL ENUM type vs join tables

My requirement A table needs to maintain a status column. This column represents one of 5 states. initial design I ... with using the ENUM type? See Question&Answers more detail:os...

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

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236 views

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javascript - adding to window.onload event?

I'm wondering how to add another method call to the window.onload event once it has already been assigned a ... or what might come after? See Question&Answers more detail:os...

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

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139 views

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c++ - allocating shared memory

i am trying to allocate shared memory by using a constant parameter but getting an error. my kernel looks like this: ... can I get around this? See Question&Answers more detail:os...

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

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197 views

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Different meanings of brackets in Python

I am curious, what do the 3 different brackets mean in Python programming? Not sure if I'm correct about ... any advice is welcomed! Thanks! See Question&Answers more detail:os...

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

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253 views

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java - The easiest way to transform collection to array?

Suppose we have a Collection<Foo>. What is the best (shortest in LoC in current context) way to transform it to Foo[]? ... Bar(Foo foo){ ... } ? See Question&Answers more detail:os...

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

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