Recent questions

0 votes

842 views

1 answer

go - Strange type definition syntax in Golang (name, then type, then string literal)

I've been trying to find out how to use mgo (MongoDB driver for Go) and I came across this struct ... know how to google this either. See Question&Answers more detail:os...

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

0 votes

675 views

1 answer

scala - If an Int can't be null, what does null.asInstanceOf[Int] mean?

As a test, I wrote this code: object Ambig extends App { def f( x:Int ) { println("Int" ) } def f( x:String ... 't be null... What am I missing? See Question&Answers more detail:os...

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

0 votes

382 views

1 answer

jQuery Set Mouse Position (not cursor position)

I have a link that, when clicked, I would like it to move the position of the mouse to the right (or anywhere ... I didn't glean much from them. See Question&Answers more detail:os...

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

0 votes

434 views

1 answer

.net - Using binding for the Value property of DataTrigger condition

I'm working on a WPF application and struggling with a data trigger. I'd like to bind the value ... a DependencyProperty of a DependencyObject. See Question&Answers more detail:os...

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

0 votes

158 views

1 answer

Will C++ exceptions safely propagate through C code?

I have a C++ application that calls SQLite's (SQLite is in C) sqlite3_exec() which in turn can call my ... C++ code calling sqlite3_exec()? See Question&Answers more detail:os...

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

0 votes

433 views

1 answer

java - sorting a List of Map<String, String>

I have a list variable created like this: List<Map<String, String>> list = new ArrayList<Map<String, ... can preserve the other mapped values See Question&Answers more detail:os...

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

0 votes

602 views

1 answer

c++14 - Are compound literals Standard C++?

Compound Literals are a C99 construct. Even though I can do this in C++ : #include <iostream> using ... just to mention a functionality ) See Question&Answers more detail:os...

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

0 votes

991 views

1 answer

how to add prebuilt object files to executable in cmake

I have an add_custom_target that triggers a make for a project (that project does not use cmake!) and generates an ... there a 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

427 views

1 answer

php - curl and ping - how to check whether a website is either up or down?

I want to check whether a website is up or down at a particular instance using PHP. I came to know that curl ... of code might help me a lot. See Question&Answers more detail:os...

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

0 votes

532 views

1 answer

media player - How do I play an mp3 in the res/raw folder of my android app?

I have a small (200kb) mp3 in the res/raw folder of my android app. I am trying to run it in an emulator from ... e) { // handle this later } See Question&Answers more detail:os...

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

0 votes

386 views

1 answer

java - Is it possible to unproxy a Spring bean?

I have a Spring bean, let's say: @TransactionAttribute(TransactionAttributeType.REQUIRED) public class AImpl implements A ... cast it to AImpl? See Question&Answers more detail:os...

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

0 votes

1.2k views

1 answer

python 3.x - Importing pandas shows ImportError: cannot import name hashtable

I have installed pandas on python 3.3, and coded like this: import csv import pandas from pandas import ... pandas were successfully installed. See Question&Answers more detail:os...

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

0 votes

482 views

1 answer

php - requires ext-fileinfo. How do I add that into my composer.json file?

I am trying to install intervention/image. After running the composer update, I get: This is my composer file: ... -stability": "stable" } See Question&Answers more detail:os...

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

0 votes

383 views

1 answer

java - PrintWriter and PrintStream never throw IOExceptions

Some days ago I realized that PrintWriter (as well as PrintStream) never throw an IOException when writing, flushing ... t that bad API design? 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

javascript - Angular.js. How to count ng-repeat iterations which satisfy the custom filter

Here's my code: <div ng-show="?" ng-repeat="item in items | notEmpty"> </div> Filter: Kb.filter("notEmpty", ... is the best way to do it? 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 - ServiceRoute + WebServiceHostFactory kills WSDL generation? How to create extensionless WCF service with ?wsdl

I'm trying to use extension-less / .svc-less WCF services. Can anyone else confirm or deny the issue I ... urls to generate WSDL correctly? 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

python - Get Excel-Style Column Names from Column Number

This is the code for providing the COLUMN name when the row and col ID is provided but when I give values ... ALPHABETIC value for the same.) See Question&Answers more detail:os...

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

0 votes

437 views

1 answer

java - While using Spring Data Rest after migrating an app to Spring Boot, I have observed that entity properties with @Id are no longer marshalled to JSON

This question is related to this SO question (Spring boot @ResponseBody doesn't serialize entity id). I have observed ... that value. Thanks :) See Question&Answers more detail:os...

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

0 votes

551 views

1 answer

How to open local PDF file in WebView in Android?

I want to open local (SD card) PDF file in a WebView. I already tried this: webview = (WebView) findViewById(R. ... I can open a PDF in WebView? See Question&Answers more detail:os...

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

0 votes

423 views

1 answer

jquery - How to make my 'click' function work with iOS

I have a set of Div's which act as buttons. These buttons have a simple jquery click() function which works ... the key to getting this working? 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

if statement - dplyr if_else() vs base R ifelse()

I am fairly proficient within the Tidyverse, but have always used ifelse() instead of dplyr if_else(). I want to ... this issue in the future. 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

python - Strange behaviour with floats and string conversion

I've typed this into python shell: >>> 0.1*0.1 0.010000000000000002 I expected that 0.1*0.1 is not 0. ... I would also be interested in them.) See Question&Answers more detail:os...

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

0 votes

167 views

1 answer

How to get iOS device MAC address programmatically

How do I get an iOS device's MAC code programmatically in my app? See Question&Answers more detail:os...

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

0 votes

336 views

1 answer

r - apply a function over groups of columns

How can I use apply or a related function to create a new data frame that contains the results of the row ... data has some hundreds of columns. See Question&Answers more detail:os...

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

0 votes

833 views

1 answer

oracle - Spool Command: Do not output SQL statement to file

I am wanting to output a Query to a CSV file and am using the below as a small test; spool c:est. ... an running as script. Thanks Bruce See Question&Answers more detail:os...

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

0 votes

242 views

1 answer

c++ - What lasts after using std::move c++11

After using std::move in a variable that might be a field in a class like: class A { public: vector<string> ... in myVector after the std::move? See Question&Answers more detail:os...

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

0 votes

555 views

1 answer

android - Multiple count down timers in RecyclerView flickering when scrolled

I have implemented count down timer for each item of RecyclerView which is in a fragment activity. The count ... screen shot of my RecyclerView See Question&Answers more detail:os...

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

0 votes

482 views

1 answer

c# - Check if a record exists in the database

I am using these lines of code to check if the record exists or not. SqlCommand check_User_Name = new ... record else // Insert record See Question&Answers more detail:os...

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

Categories

Just Browsing Browsing

Most popular tags