OStack Q&A-Knowledge Sharing Community

0 votes

73 views

1 answer

c# - Why do I get an OutOfMemoryException when I have images in my ListBox?

I want to display all images stored in the Windows Phone 8 photo folder in my custom gallery which uses a ListBox ... ? Why is memory not freed (fast enough)? Question&Answers:os...

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

0 votes

253 views

1 answer

python - List of tuples to dictionary

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

302 views

1 answer

node.js - nodejs - http.createServer seems to call twice

If I write the following program in node: http.createServer(function (req, res) { if( req.method == ' ... single HTTP request is causing this to execute twice. Question&Answers:os...

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

0 votes

285 views

1 answer

Does css hover work on mobile devices?

Does css hover work on mobile devices? I have a css hover class which works fine on a regular web browser, but doesn't work on mobile browsers. Question&Answers:os...

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

0 votes

370 views

1 answer

javascript - How to get the background color of an HTML element?

How can I get the background color of any element, like a div, using JavaScript? I have tried: <html> <body> <div ... (styleProp); return y; } </script> </html> Question&Answers:os...

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

0 votes

207 views

1 answer

c# - Serialization of Entity Framework objects with One to Many Relationship

I am attempting to use EF with Code First and the Web API. I don't have any problems until I get into ... virtual ICollection<Tag> Tags { get; set; } } Question&Answers:os...

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

0 votes

443 views

1 answer

python - Compare two CSV files and search for similar items

So I've got two CSV files that I'm trying to compare and get the results of the similar items. The first ... I'm still learning python. Edit Using Python 2.6 Question&Answers:os...

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

0 votes

268 views

1 answer

C struct initialization using labels. It works, but how?

I found some struct initialization code yesterday that threw me for a loop. Here's an example: typedef struct { int ... Is anybody aware of how/why this works? Question&Answers:os...

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

0 votes

189 views

1 answer

android - How to compress image size?

I want to capture image in low resolution using android camera api but when I captured image it will take ... compress big image into small size in android? Question&Answers:os...

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

0 votes

297 views

1 answer

Using contextmenu with listview in android

I am developing an android application.I will have a listview and i have set a context menu to appear when a listview ... in a list item.How do i achieve that? Question&Answers:os...

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

0 votes

541 views

1 answer

c# - How to check if file exists on FTP before FtpWebRequest

I need to use FtpWebRequest to put a file in a FTP directory. Before the upload, I would first like to know if ... should I use to check if this file exists? Question&Answers:os...

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

0 votes

215 views

1 answer

Need clarification on Scala literal identifiers (backticks)

Reading the Programming in Scala 2nd Ed and I came across this: literal identifier "The idea is that you can ... s method yield instead? Thank you in advance. Question&Answers:os...

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

0 votes

319 views

1 answer

android - Backup and restore SQLite database to sdcard

How can I backup my database to the sdcard automatically in my app? And afterward, how do I restore it? Question&Answers:os...

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

0 votes

353 views

1 answer

Setting environment variables in Linux using Bash

In tcsh, I have the following script working: #!/bin/tcsh setenv X_ROOT /some/specified/path setenv ... environment variables are for locating the executable. Question&Answers:os...

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

0 votes

166 views

1 answer

python - Multiple assignment semantics

In Python one can do: a, b = 1, 2 (a, b) = 1, 2 [a, b] = 1, 2 I checked the generated bytecode ... all? Would I ever need one of these instead of the others? Question&Answers:os...

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

0 votes

401 views

1 answer

java - What is the difference between Double.parseDouble(String) and Double.valueOf(String)?

I want to convert String to a Double data type. I do not know if I should use parseDouble or valueOf. What is the difference between these two methods? Question&Answers:os...

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

0 votes

115 views

1 answer

Define a fixed-size list in Java

Is it possible to define a list with a fixed size that's 100? If not why isn't this available in Java? Question&Answers:os...

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

0 votes

502 views

1 answer

php - phpmailer error "Could not instantiate mail function"

I'm using the mail() basic example modified slightly for my user id and I'm getting the error "Mailer Error: Could not ... } else { echo "Message sent!"; } ?> Question&Answers:os...

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

0 votes

94 views

1 answer

Android Set Multiple Alarms

I'm trying to implement an Android app that needs to alarm (or to alert) multiple times along the time ... to trigger those alarms in their specific timestamps. Question&Answers:os...

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

0 votes

303 views

1 answer

php - Cannot modify header information - headers already sent by... WordPress Issue

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

208 views

1 answer

c++ - Static Data Member Initialization

Why must static data member initialization be outside the class? class X { public: int normalValue = 5; //NSDMI ... "i") only a declaration, not a definition? Question&Answers:os...

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

0 votes

367 views

1 answer

android - Picasso Load image from filesystem

Can I use Picasso library to load images from the filesystem? I'm using startActivityForResult to let the user pick ... get the Picasso.load() method to work. Question&Answers:os...

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

0 votes

193 views

1 answer

php variable in html no other way than: <?php echo $var; ?>

I work a lot in mixed HTML and PHP and most time I just want solid HTML with a few PHP variables in it so my ... $var" ></td></tr>" Is there anything better? Question&Answers:os...

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

0 votes

351 views

1 answer

language agnostic - what is natural ordering when we talk about sorting?

What is meant by natural ordering . Suppose I have an Employee object with name , age and date of joining , sorting by what is natural ordering ? Question&Answers:os...

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

0 votes

189 views

1 answer

Set Limit on the DatePickerDialog in Android?

How to limit on DatePickerDialog to choose a date from 2-12 years in the past or from 0-2 years from the current date ... ); } }; return _date; } return null; } Question&Answers:os...

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

0 votes

1.4k views

1 answer

command line - How to execute multiple statements in a MATLAB anonymous function?

I'd like to do something like this: >> foo = @() functionCall1() functionCall2() So that ... functionCall2 are not necessarily functions that return values. Question&Answers:os...

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

0 votes

228 views

1 answer

javascript - Using raw image data from ajax request for data URI

I'm trying to use a combination of Ajax and data URIs to load a JPEG image and extract its EXIF data with a ... as well as the number of requests. Thanks, Nick Question&Answers:os...

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

0 votes

352 views

1 answer

Enable Python to Connect to MySQL via SSH Tunnelling

I'm using MySqldb with Python 2.7 to allow Python to make connections to another MySQL server import MySQLdb db ... and the MySQL server are the same machine. 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