OStack Q&A-Knowledge Sharing Community

0 votes

329 views

1 answer

template<class T> class Set { public: void insert(const T& item); void remove(const T& item); private: std::list ... in the remove() is needed? See Question&Answers more detail:os...

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

0 votes

429 views

1 answer

rubygems - Why are gems installed in a directory with a different Ruby version than I’m running?

When I install a gem, it gets installed in a directory named 1.9.1, despite that not being the version of Ruby I ... (and certainly not v1.9.1). See Question&Answers more detail:os...

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

0 votes

864 views

1 answer

hibernate - Performing Date/Time Math In HQL?

I'm looking how to perform date/time math within an HQL query. Specifically, how do I add or subtract (x) ... use the database's current time. See Question&Answers more detail:os...

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

0 votes

408 views

1 answer

c - Variadic macro trick

What's the trick to create a variadic macro FOO(a1, a2, a3,..., an) such that it expands to FOOn(a1, a2, ... there is but I couldn't find it. See Question&Answers more detail:os...

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

0 votes

298 views

1 answer

c++ - Using assignment as a condition expression?

Consider: if (a=5) { /* do something */ } How does the assignment work as a condition? Is it based on non-zero value of l-value? See Question&Answers more detail:os...

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

0 votes

337 views

1 answer

python - How to check MouseButtonPress event in PyQt6?

In PyQt5, we can validate an event occurrence using QEvent class, for example QEvent.MouseButtonPress. In PyQt6 the ... 'timestamp', 'type'] See Question&Answers more detail:os...

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

0 votes

407 views

1 answer

python - "ImportError: No module named webapp2" after Linux SDK upgrade (1.9.35 -> 1.9.38)

After upgrading my GAE Python Linux SDK from version 1.9.35 to 1.9.38 my application stopped working ... Any other investigation leads? See Question&Answers more detail:os...

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

0 votes

357 views

1 answer

javascript - Detect Safari using jQuery

Though both are Webkit based browsers, Safari urlencodes quotation marks in the URL while Chrome does not. ... deprecated value for now? See Question&Answers more detail:os...

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

0 votes

311 views

1 answer

php - Laravel Request::all() Should Not Be Called Statically

In Laravel, I'm trying to call $input = Request::all(); on a store() method in my controller, but I'm ... this? (I'm following a Laracast) See Question&Answers more detail:os...

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

0 votes

736 views

1 answer

jquery - Javascript change event on input element fires on only losing focus

I have an input element and I want to keep checking the length of the contents and whenever the length becomes equal ... by mouse... any ideas? See Question&Answers more detail:os...

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

0 votes

347 views

1 answer

java - Attach the Source in Eclipse of a jar

I added a Student.jar into my Build Path in my eclipse like this- Right click on the project->BuildPath-> ... it shows the same above behavior. See Question&Answers more detail:os...

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

0 votes

123 views

1 answer

Reading mp4 files with PHP

I'm trying to read mp4 file with PHP and what I'm doing now is this: <?php header("Content-Length: ... video.mp4) everything goes well. Thanks. See Question&Answers more detail:os...

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

0 votes

281 views

1 answer

.net - Using SynchronizationContext for sending events back to the UI for WinForms or WPF

I'm using a SynchronizationContext to marshal events back to the UI thread from my DLL that does a lot of ... makes enough sense to follow. See Question&Answers more detail:os...

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

0 votes

443 views

1 answer

android - How to detect app removed from the recent list?

I'm working on a music app, and I want stop the service when user removes the application from the recent ... getting destroyed). Please help. See Question&Answers more detail:os...

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

0 votes

400 views

1 answer

javascript - window.focus(), self.focus() not working in firefox

Hi all i am developing a chat application ... i have multiple chat windows ... i want to know which windw ... above code is in the same html See Question&Answers more detail:os...

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

0 votes

125 views

1 answer

Fast Video Compression on Android

I want to upload video files to server and compress before uploading. I'm using ffmpeg libx264. I have seen ... achieve this? Thanks in advance. See Question&Answers more detail:os...

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

0 votes

1.8k views

1 answer

json - jq: Object cannot be csv-formatted, only array

I am new to jq and I have a JSON file from a DynamoDB table which I want to convert to CSV. This is my ... able to figure it out. Thank you! See Question&Answers more detail:os...

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

0 votes

231 views

1 answer

Python and MySQLdb: substitution of table resulting in syntax error

I need to dynamically change tables and variables from time to time, so I wrote a python method like this: ... substituted query as a string ? See Question&Answers more detail:os...

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

0 votes

592 views

1 answer

machine learning - How to interpret MSE in Keras Regressor

I am trying to build a model to predict house prices. I have some features X (no. of bathrooms , etc.) ... sounding silly as I am starting out! See Question&Answers more detail:os...

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

0 votes

368 views

1 answer

Flutter: Firebase Real-Time database orderByChild has no impact on query result

I have inserted data like this into Firebase Real-Time Database like this way: And I query the database back like this ... 2020-04-20 15:52:12 See Question&Answers more detail:os...

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

0 votes

240 views

1 answer

c - Which compiler should I trust?

This is going to be some what of a newbie question but I was trying to work on a small exercise in ... information before it can be answered. See Question&Answers more detail:os...

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

0 votes

534 views

1 answer

python - Is it possible to change sprite colours in Pygame?

I'm making a game in Python using Pygame that includes a small avatar maker before the game starts, but ... it up to more possibilities. See Question&Answers more detail:os...

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

0 votes

305 views

1 answer

php - pg_query result contains strings instead of integer, numeric

When I get data from a postgresql database with pg_query,pg_fetch_assoc all numeric fields get returned as strings. Is ... I need it to be? See Question&Answers more detail:os...

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

0 votes

205 views

1 answer

python - pyclipper installation error: "tp_print is not a member of _typeobject"

I'm trying to install pyclipper to use with nototools. https://github.com/googlefonts/nototools But I can't ... be installed directly ``` See Question&Answers more detail:os...

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

0 votes

291 views

1 answer

.net - Start a Task in the Form Shown event

I want to bind a ComboBox to an EF Core entity of 53k rows. This takes some time, around 10 seconds. I ... back to the the main thread? 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

azure - Is there a way to persist chat history in MS Bot Framework Web Chat after a page reload/navigation to another page?

I'm trying to persist the conversation a user has had with the bot during page reloads and navigation to other ... and no history is maintained. See Question&Answers more detail:os...

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

0 votes

965 views

1 answer

google chrome extension - How can I get selected text in pdf in Javascript?

I'm writing a Chrome Extention to manipulate pdf file so I want to get selected text in the pdf. How can I do that. Some thing like that: See Question&Answers more detail:os...

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

0 votes

439 views

1 answer

windows phone 7 - Display GIF in a WP7 application with Silverlight

I would like to display gif in my WP7 application. Is there some way to achieve this ? I've tryed this one ... . Thanks in advance for any help 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