OStack Q&A-Knowledge Sharing Community

0 votes

298 views

1 answer

Extreme numerical values in floating-point precision in R

Can somebody please explain me the following output. I know that it has something to do with floating point precision, but ... 17 == 1 [1] TRUE See Question&Answers more detail:os...

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

0 votes

344 views

1 answer

c# - How to programmatically set selected Panorama item in WP7

I'm using a panorama control in a WP7 app. One of the PanoramaItems takes you to another page, which then ... the app to compose an email? See Question&Answers more detail:os...

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

0 votes

616 views

1 answer

Permission Denial: not allowed to send broadcast in android

I have created a simple camera app. It works fine in all the versions of Android except Android 4.4. I get the ... KITKAT? Let me know! Thanks! See Question&Answers more detail:os...

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

0 votes

428 views

1 answer

android - OnItemClickListener and OnClickListener not working for ListView

I have used a Custom ListView and I am displaying some data using the same ListView. When I click on the ... in resolving this is appreciated. See Question&Answers more detail:os...

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

0 votes

436 views

1 answer

frame - How to navigate a subframe inside a frameset using Selenium WebDriver?

I need to get the result from the table "td". But before I can do that I need to navigate a frame that ... take a look at the above script. See Question&Answers more detail:os...

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

0 votes

421 views

1 answer

dependencies - Parallel cumulative (prefix) sums in OpenMP: communicating values between threads

Assume I have a function f(i) which depends on an index i (among other values which cannot be precomputed). I want ... at infinity it's -1/12). See Question&Answers more detail:os...

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

0 votes

239 views

1 answer

Google Charts vertical axis in whole numbers

I am trying to configure a Google column chart to display the vertical axis in whole numbers but when it ... that seems relevant. Thanks See Question&Answers more detail:os...

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

0 votes

314 views

1 answer

.net - How to get the logon SID in C#

How does one retrieve the Windows Logon SID in C# .net? (not the user SID, but the unique new one for each session) See Question&Answers more detail:os...

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

0 votes

823 views

1 answer

Turn SSL verification off for JGit clone command

I am trying to a clone of a Git Repository via the CloneCommand. With this piece of code `Git.cloneRepository() ... for a already cloned repo. See Question&Answers more detail:os...

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

0 votes

332 views

1 answer

c# - Access SQL syntax error when using OleDbCommandBuilder

I am going to INSERT data in Access Database using OleDbDataAdapter in C# but i got an error with message ... Value = args.Entry.Password; See Question&Answers more detail:os...

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

0 votes

529 views

1 answer

.net - Table name and table field on SqlParameter C#?

I would like to know how to pass the table name and a table field name via SqlCommand on C#. Tryied to do it ... but didn't work. Any ideas?? See Question&Answers more detail:os...

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

0 votes

293 views

1 answer

Swift and using class extension

I don't understand why programmers use the extension keyword in their class implementation. You can read in other ... he chose this approach. See Question&Answers more detail:os...

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

0 votes

346 views

1 answer

java - Maximum number of threads in a JVM?

What are the maximum number of threads which can be maintained by the Java virtual machine? I did not explain this ... 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)

0 votes

865 views

1 answer

typescript - Angular 2 Basic Authentication not working

I'm trying to connect/ do a POST request to an API with Angular2, It's a very simple API with a Basic ... ;q=0.6 Hope someone can help See Question&Answers more detail:os...

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

0 votes

234 views

1 answer

FOR loop performance in PHP

As my research leads me to believe that for loops are the fastest iteration construct in PHP... to make it ... example two. Is that correct? See Question&Answers more detail:os...

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

0 votes

573 views

1 answer

animation - In JavaFX how do I move a sprite across the screen?

I'm new to JavaFX and am trying to write a game where an animated 2D character walks across the screen (for ... in Swing. Best Regards, Zareh See Question&Answers more detail:os...

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

0 votes

541 views

1 answer

linux - How to sort strings that contain a common prefix and suffix numerically from Bash?

Here is a list of files: some.string_100_with_numbers.in-it.txt some.string_101_with_numbers.in-it.txt some. ... be clever and script? See Question&Answers more detail:os...

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

0 votes

288 views

1 answer

javascript - confused about function declaration in { }

var a; if (true) { a = 5; function a() {} a = 0; console.log(a) } console.log(a) See Question&Answers more detail:os...

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

0 votes

668 views

1 answer

Unable to import opengl.gl in python on macos

I am using OpenGL to render a scene in python. My code works perfectly fine on windows but, for ... : pip3 install PyOpenGL PyOpenGL_accelerate See Question&Answers more detail:os...

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

0 votes

422 views

1 answer

multithreading - Identifying the client during a .NET remoting invocation

Given this MarshalByRef class: public class MyRemotedClass : MarshalByRef { public void DoThis() { ... } public void ... list is not an option. See Question&Answers more detail:os...

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

0 votes

222 views

1 answer

ASP.NET MVC DropDownListFor not selecting value from model

I'm using ASP.NET MVC 3, and just ran into a 'gotcha' using the DropDownListFor HTML ... Product.RequiredShippingTypeId, Model.ShippingTypes) See Question&Answers more detail:os...

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

0 votes

271 views

1 answer

python - How to export C# methods?

How can we export C# methods? I have a dll and I want to use its methods in the Python language with the ctypes ... (like they do in C++)? See Question&Answers more detail:os...

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

0 votes

413 views

1 answer

Python: Find equivalent surrogate pair from non-BMP unicode char

The answer presented here: How to work with surrogate pairs in Python? tells you how to convert a surrogate pair, ... a clear answer to that. See Question&Answers more detail:os...

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

0 votes

436 views

1 answer

emacs - Using tramp with EmacsW32 and cygwin, possible?

I have some trouble setting up Tramp with EmacsW32 and cygwin. I have configured emacs to use cygwin as shell using ... tips on this. Thank you. See Question&Answers more detail:os...

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

0 votes

257 views

1 answer

c++ - Is sizeof(*ptr) undefined behavior when pointing to invalid memory?

We all know that dereferencing an null pointer or a pointer to unallocated memory invokes undefined behaviour. But ... Is this also undefined? See Question&Answers more detail:os...

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

0 votes

404 views

1 answer

bit manipulation - Bitwise Multiply and Add in Java

I have the methods that do both the multiplication and addition, but I'm just not able to get my head ... to learn bitwise operations in Java. See Question&Answers more detail:os...

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

0 votes

361 views

1 answer

ruby - Rails Browser Detection Methods

Hey Everyone, I was wondering what methods are standard within the industry to do browser detection in Rails? ... end return @users_browser end See Question&Answers more detail:os...

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

0 votes

886 views

1 answer

hadoop - Pyspark: get list of files/directories on HDFS path

As per title. I'm aware of textFile but, as the name suggests, it works only on text files. I would need to ... a local path. I'm using pyspark. See Question&Answers more detail:os...

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

Categories

Recent questions

Just Browsing Browsing

Most popular tags