OStack Q&A-Knowledge Sharing Community

0 votes

616 views

1 answer

performance - Mapping 2 vectors - help to vectorize

Working in Matlab I have 2 vectors of x coordinate with different length. For example: xm = [15 20 24 25 ... ideas how to vectorize this code? See Question&Answers more detail:os...

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

0 votes

909 views

1 answer

string - How to open file in PHP that has unicode characters in its name?

For example I have a filename like this - проба.xml and I am unable to open it from PHP script. If ... unicode strings... Any suggestions? See Question&Answers more detail:os...

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

0 votes

343 views

1 answer

c# - Guidelines of when to use locking

I would like to know if there are any guidelineswhich a developer should follow as to when (and where) ... when strcturing multi-threaded code? See Question&Answers more detail:os...

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

0 votes

735 views

1 answer

npm - Laravel 5.7 + Font Awesome

I'm trying to include the Font Awesome toolkit in Laravel 5.7. These are the steps I took: 1) Run npm ... the browser the icons look like this: See Question&Answers more detail:os...

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

0 votes

266 views

1 answer

html - justify-content: space-between failing to align elements as expected

I needed to use flexbox to center my navigation and hence I came up with the following: .navbar-brand > img { width: ... </div> </div> </nav> See Question&Answers more detail:os...

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

0 votes

330 views

1 answer

javascript - Array.push return pushed value?

Are there any substantial reasons why modifying Array.push() to return the object pushed rather than the length ... drawbacks to this approach? See Question&Answers more detail:os...

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

0 votes

649 views

1 answer

multithreading - Java volatile modifier and synchronized blocks

Does a variable that is accessed by multiple threads, but only inside synchronized blocks, need the volatile modifier? If not, why? See Question&Answers more detail:os...

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

0 votes

290 views

1 answer

javascript - Disable button whenever a text field is empty dynamically

Here's my code: <input type="text" onkeyup="if(this.value.length > 0) document.getElementById(' ... to achieve this using javascript? See Question&Answers more detail:os...

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

0 votes

632 views

1 answer

java - JMenu ActionListener

I was wondering if can you test to see if a JMenu (not JMenuItem) has been clicked. I tried adding an ... this result are welcome too! Thanks See Question&Answers more detail:os...

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

0 votes

814 views

1 answer

xcode - How do I limit an iOS app only to 4 inch screen devices?

Is there a setting in Xcode that lets me declare that my app only supports 4" screen devices (iPhone 5 and the newest iPod Touch)? See Question&Answers more detail:os...

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

0 votes

790 views

1 answer

arrays - PHP try-catch blocks: are they able to catch invalid arg types?

Background: Suppose I have the following obviously-incorrect PHP: try{ $vtest = ''; print(array_pop($vtest)); } ... ; print(array_pop($vtest)); See Question&Answers more detail:os...

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

0 votes

290 views

1 answer

java - Inner class and local variables

Why do I need to declare a local variable as final if my Inner class defined within the method needs to use it ... ? How does it impact ? See Question&Answers more detail:os...

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

0 votes

568 views

1 answer

css selectors - CSS select the first child from elements with particular attribute

Lets say that we have the following code: <node> <element bla="1"/> <element bla="2"/> <element bla="3"/> ... first-child ...but it did not work See Question&Answers more detail:os...

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

0 votes

578 views

1 answer

c - Why does wait() set status to 255 instead of the -1 exit status of the forked process?

I'm trying to return an integer value from a child process. However, if I use exit(1) I get 256 as the ... ). Is it supposed to be unsigned? See Question&Answers more detail:os...

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

0 votes

596 views

1 answer

objective c - AVAudioPlayer stops playing immediately with ARC

I am trying to play an MP3 via AVAudioPlayer which I thought to be fairly simple. Unfortunately, it's not ... , otherwise, it works flawlessly. See Question&Answers more detail:os...

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

0 votes

113 views

1 answer

Type punning and Unions in C

I'm currently working on a project to build a small compiler just for the heck of it. I've decided to take ... where the other type is used. See Question&Answers more detail:os...

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

0 votes

913 views

1 answer

scala - Encode an ADT / sealed trait hierarchy into Spark DataSet column

If I want to store an Algebraic Data Type (ADT) (ie a Scala sealed trait hierarchy) within a Spark ... .apache.spark.sql.DataSet[Occupation] 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

html - Cross-browser embedded font in svg image

The title is ambiguous; let me clarify: I have an svg image which includes a text I want rendered with a custom ... font inside an svg image.) See Question&Answers more detail:os...

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

0 votes

263 views

1 answer

c++ - Sorting std::strings with numbers in them?

I'm currently sorting by the std::string < operator. The problem with it is that: 30 < 9. The 30 shows up ... I'm using utf 8 encoding. Thanks See Question&Answers more detail:os...

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

0 votes

94 views

1 answer

How can I update a .yml file, ignoring preexisting Jinja syntax, using Python?

I have some preprocessing to do with some existing .yml files - however, some of them have Jinja template syntax ... PyYAML on Python 2.7+ See Question&Answers more detail:os...

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

0 votes

425 views

1 answer

javascript - Inconsistent behavior of toLocaleString() in different browser

I am working on a project where I have to deal a lot with Date and Time. Server side technology is ASP ... matter which browser client is using. See Question&Answers more detail:os...

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

0 votes

202 views

1 answer

python - 'is' operator behaves unexpectedly with floats

I came across a confusing problem when unit testing a module. The module is actually casting values and I want to ... == is working as expected. 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

c# - Entity Framework - default values doesn't set in sql server table

SQL server 2005 database table has a column 'createdon' for which default value set to getdate(). I am ... in Entity framework, please suggest. See Question&Answers more detail:os...

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

0 votes

496 views

1 answer

excel - How to make safe API Timers in VBA?

I read in various places that API timers are risky in VBA, that if you edit a cell while the timer is running ... 1).Value = index End Function See Question&Answers more detail:os...

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

0 votes

323 views

1 answer

c++ - `auto` specifier type deduction for references

Let's consider the following code snippet void Test() { int x = 0; int& rx = x; int* px = &x; ... GetBigClass(); // unexpected copy is performed See Question&Answers more detail:os...

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

0 votes

235 views

1 answer

Please Explain Java 8 Method Reference to instance Method using class name

public interface MyFunc<T> { boolean func(T v1, T v2); } public class HighTemp { private int hTemp; ... Please Explain All points separately. See Question&Answers more detail:os...

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

0 votes

130 views

1 answer

Creating a list in Python- something sneaky going on?

Apologies if this doesn't make any sense, I'm very new to Python! From testing in an interpreter, I can see that ... that to a call to list()? See Question&Answers more detail:os...

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

0 votes

190 views

1 answer

Create an Image of a DIV in JavaScript (GIF/PNG)

I'm wondering is there a JavaScript library available that would allow me to generate an Image from the contents of ... in some way! Cheers, Ro 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