OStack Q&A-Knowledge Sharing Community

0 votes

148 views

1 answer

sql - Using Excel VBA to export data to MS Access table

I am currently using following code to export data from worksheet to MS Access database, the code is looping through each ... but can't make it work for now. Question&Answers:os...

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

0 votes

286 views

1 answer

python - pip is not able to install packages correctly: Permission denied error

This question already has answers here: Question&Answers:os...

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

0 votes

437 views

1 answer

value type - AnyObject and Any in Swift

I don't understand when to use AnyObject and when to use Any in Swift. In my case, I've a Dictionary [String: ... and AnyObject and which one to use in my case. Question&Answers:os...

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

0 votes

225 views

1 answer

java - Uninitialized Object vs Object Initialized to NULL

I'm working in Java. I commonly setup some objects as such: public class Foo { private SomeObject ... null-checking uninitialized objects will be accurate? Question&Answers:os...

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

0 votes

148 views

1 answer

java - Exception using HttpRequest.execute(): Invalid use of SingleClientConnManager: connection still allocated

I'm using google-api-client-java 1.2.1-alpha to execute a POST request, and am getting the following ... below me be trying to acquire a new connection? Question&Answers:os...

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

0 votes

308 views

1 answer

html - How can I make a link from a <td> table cell

I have the following: <td> some text <div>a div</div> </td> I'd like to make the entire <td>...< ... I'd prefer without the use of JavaScript. Is this possible? Question&Answers:os...

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

0 votes

549 views

1 answer

c# - How to "flatten" or "index" 3D-array in 1D array?

I am trying to flatten 3D array into 1D array for "chunk" system in my game. It's a 3D-block game and ... necessary, I want as good performance as possible :) Question&Answers:os...

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

0 votes

154 views

1 answer

python - Detect tap with pyaudio from live mic

How would I use pyaudio to detect a sudden tapping noise from a live microphone? Question&Answers:os...

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

0 votes

829 views

1 answer

c# - How to do Network discovery using UDP broadcast

I want to to do network discovery using UDP Broadcast in C#. I don't know how to do this. Can you give me advice ... to do it? I want to do like this tutorial. Question&Answers:os...

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

0 votes

309 views

1 answer

java - How to test code dependent on environment variables using JUnit?

I have a piece of Java code which uses an environment variable and the behaviour of the code depends on the ... that tests shouldn't interfere with each other. Question&Answers:os...

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

0 votes

275 views

1 answer

Can't get Python to import from a different folder

I can't seem to get Python to import a module in a subfolder. I get the error when I try to create ... AttributeError: 'module' object has no attribute 'User' Question&Answers:os...

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

0 votes

369 views

1 answer

android - How can I make my layout scroll both horizontally and vertically?

I am using a TableLayout. I need to have both horizontal and vertical scrolling for this layout. By default I ... I make my layout scroll in both directions? Question&Answers:os...

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

0 votes

250 views

1 answer

javascript - ReactJs: Prevent multiple times button press

In my React component I have a button meant to send some data over AJAX when clicked. I need to happen ... away all-together the instant it's being clicked? Question&Answers:os...

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

0 votes

133 views

1 answer

What is the default C -std standard version for the current GCC (especially on Ubuntu)?

When I ask to see the current version of cc I get this. $ cc --version cc (Ubuntu/Linaro 4.7.2-2ubuntu1) 4.7. ... which of c89, c90, c99 or c11 is being used. Question&Answers:os...

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

0 votes

344 views

1 answer

android - Navigation Drawer Below Toolbar

I am trying to get the navigation drawer to open below the toolbar. <android.support.v4.widget.DrawerLayout ... the navigation bar opens below the toolbar? Question&Answers:os...

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

0 votes

213 views

1 answer

Should I include <xxxx.h> or <cxxxx> in C++ programs?

What should I include in C++ programs, stdio.h or cstdio? and Why? Why two header files which provide the same ... , Is there a base rule that I should follow? Question&Answers:os...

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

0 votes

77 views

1 answer

java - Why can array constants only be used in initializers?

This question already has answers here: Question&Answers:os...

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

0 votes

129 views

1 answer

Querying an array of arrays in MongoDB

Say, I have a document like this.. "ID" : "fruit1", "Keys" : [["apple", "carrot", "banana"]] How do ... ]}); Any pointer to this query will be helpful. Thanks. Question&Answers:os...

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

0 votes

81 views

1 answer

How to retrieve data from a SQL Server database in C#?

I have a database table with 3 columns firstname, Lastname and age. In my C# Windows application I have 3 ... retrieve all the other values to the textboxes? Question&Answers:os...

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

0 votes

343 views

1 answer

c++ - How to read file content into istringstream?

In order to improve performance reading from a file, I'm trying to read the entire content of a big (several MB) file ... ==== * Use iss to access data */ } Question&Answers:os...

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

0 votes

466 views

1 answer

.net - ConfigureAwait(false) relevant in ASP.NET Core?

I stumbled on an issue (https://github.com/HTBox/allReady/issues/1313) at GitHub where they discussed about taking ... it as a console application or in IIS? Question&Answers:os...

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

0 votes

241 views

1 answer

html - jQuery find element by data attribute value

I have a few elements like below: <a class="slide-link" href="#" data-slide="0">1</a> <a class="slide-link" ... [data-slide="0"]').addClass('active'); Any idea? Question&Answers:os...

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

0 votes

150 views

1 answer

Python - Initializing Multiple Lists/Line

This is terribly ugly: psData = [] nsData = [] msData = [] ckData = [] mAData = [] RData = [] pData ... there a way to declare these variables on a single line? Question&Answers:os...

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

0 votes

1.2k views

1 answer

debugging - How to debug web sites on mobile devices?

How do people debug websites on mobile devices? I'd like to be able to manipulate the HTML and CSS ... Inspector in a desktop browser, and debug JavaScript. Question&Answers:os...

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

0 votes

140 views

1 answer

Getting the "diff" between two arrays in C#?

Let's say I have these two arrays: var array1 = new[] {"A", "B", "C"}; var array2 = new[] {"A", " ... in array1 ("B") Items that are in both Thanks in advance! Question&Answers:os...

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

0 votes

576 views

1 answer

python - Pandas equivalent of Oracle Lead/Lag function

First I'm new to pandas, but I'm already falling in love with it. I'm trying to implement the equivalent ... equivalent of the Lead and lag functions in Pandas? Question&Answers:os...

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

0 votes

92 views

1 answer

c# - Creating dynamic queries with entity framework

I would like to know what is the best way of creating dynamic queries with entity framework and linq. I ... do this? Preferably type safe with compile check? Question&Answers:os...

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

0 votes

1.1k views

1 answer

jsf - Are @ManagedBeans obsolete in JavaEE6 because of @Named in CDI/Weld?

Because of CDI (and its implementation Weld), every POJO in JEE6 can be annotated with @Named, which ... miss something where @ManagedBean still makes sense? Question&Answers:os...

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

Categories

Recent questions

Just Browsing Browsing

Most popular tags