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java - How can I share a variable or object between two or more Servlets?

I would like to know if there is some way to share a variable or an object between two or more Servlets, I ... stopped. (it's just for Testing) See Question&Answers more detail:os...

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

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push notification - How to avoid delay in Android GCM messages / change heartbeat

I've been reading many posts regarding a GCM issue that affects some people. It seems that in some ... /details?id=com.andqlimax.pushfixer See Question&Answers more detail:os...

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

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279 views

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c++ - Fast fixed point pow, log, exp and sqrt

I've got a fixed point class (10.22) and I have a need of a pow, a sqrt, an exp and a log ... code so I cannot use any assembler optimisations. See Question&Answers more detail:os...

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

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reactjs - How to tell webpack dev server to serve index.html for any route

React router allows react apps to handle /arbitrary/route. In order this to work, I need my server to send the ... me my react app. please. See Question&Answers more detail:os...

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

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jQuery to retrieve and set selected option value of html select element

I am attempting to retrieve and set the selected value of a select element (drop down list) with jQuery. ... problem would be much appreciated. See Question&Answers more detail:os...

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

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javascript - from green to red color depend on percentage

I have a poll system and I want answers for this poll to be colored. For example: If it's 10% it would be ... } Now I want hex from percent. See Question&Answers more detail:os...

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

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javascript - How to delete '#' sign in angular-ui-router URLs

I'm using the angular-ui-router library and I have a problem with URLs. I have the following code: app.js: app. ... the '#' sign from the URL? See Question&Answers more detail:os...

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

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android data binding with a custom view

The Android data binding guide discusses binding values within an activity or fragment, but is there a way to perform ... I'm trying to do? See Question&Answers more detail:os...

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

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utf 8 - MySQL command line formatting with UTF8

I have a database table that contains Swedish/Norwegian strings. When I query some data, I get output like ... the tabular formatting intact? See Question&Answers more detail:os...

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

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python - How to annotate Count with a condition in a Django queryset

Using Django ORM, can one do something like queryset.objects.annotate(Count('queryset_objects', gte=VALUE)). Catch my ... not much to go on. See Question&Answers more detail:os...

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

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javascript - Smooth scroll anchor links WITHOUT jQuery

Is it possible to use smooth scroll to anchor links but without jQuery? I am creating a new site and I don't want to use jQuery. See Question&Answers more detail:os...

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

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python - Paramiko's SSHClient with SFTP

How I can make SFTP transport through SSHClient on the remote server? I have a local host and two remote ... work with Paramiko's SSHClient? See Question&Answers more detail:os...

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

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c# - EF Data Context - Async/Await & Multithreading

I frequently use async/await to ensure ASP.NET MVC Web API threads are not blocked by longer-running I ... execute synchronous then instead? See Question&Answers more detail:os...

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

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JavaScript loading progress of an image

Is there a way in JS to get the progress of a loading image while the image is being loaded? I want to use ... }; someImage.src = "image.jpg"; See Question&Answers more detail:os...

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

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android - Retrofit Uploading multiple images to a single key

I am using Retrofit to upload images to my server. Here I need to upload multiple images for a single key. I ... } Please help me with this. See Question&Answers more detail:os...

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

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222 views

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dpi - How do I convert a WPF size to physical pixels?

What's the best way to convert a WPF (resolution-independent) width and height to physical screen pixels ... connected to a PresentationSource". See Question&Answers more detail:os...

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

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251 views

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Efficient maths algorithm to calculate intersections

For a game I am developing I need an algorithm that can calculate intersections. I have solved the problem, ... lengths of the line segments. See Question&Answers more detail:os...

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

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103 views

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How to capture image from custom CameraView in Android?

i need to capture image from required portion of the screen. capture image from camera. at that time other screen ... is. how is this possible? See Question&Answers more detail:os...

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

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490 views

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algorithm - Finding all the shortest paths between two nodes in unweighted undirected graph

I need help finding all the shortest paths between two nodes in an unweighted undirected graph. I am able to find ... / pseudocode I could use? See Question&Answers more detail:os...

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

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400 views

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objective c - Can I access the keychain on the iPhone?

This question discusses encrypting data on the iPhone using the crypt() function. As an alternative, is there a ... for us in an application? See Question&Answers more detail:os...

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

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arrays - Using usort in php with a class private function

ok using usort with a function is not so complicated This is what i had before in my linear code function ... method inside the usort() function See Question&Answers more detail:os...

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

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320 views

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How to hide Android StatusBar in Flutter

How to hide the Android Status Bar in a Flutter App? See Question&Answers more detail:os...

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

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401 views

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android - How to perform a fade animation on Activity transition?

I am codifiying a transition effect between my logo activity and my Main activity, but I have the problem that ... get only a vanish effect? See Question&Answers more detail:os...

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

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206 views

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python - How do I perform query filtering in django templates

I need to perform a filtered query from within a django template, to get a set of objects equivalent to python ... out how to write FILTER. See Question&Answers more detail:os...

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

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python - Stop matplotlib repeating labels in legend

Here is a very simplified example: xvalues = [2,3,4,6] for x in xvalues: plt.axvline(x,color='b',label=' ... else: plt.axvline(x,color='b') See Question&Answers more detail:os...

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

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c++ - What is the fastest way to change a key of an element inside std::map

I understand the reasons why one can't just do this (rebalancing and stuff): iterator i = m.find(33); ... the node back into the tree Rebalance See Question&Answers more detail:os...

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

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209 views

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HTML 5 versus XHTML 1.0 Transitional?

It seems that HTML 5 is going to be supported (partially) by Firefox 3.1 and other browsers. It is ... /www.youtube.com/watch?v=xIxDJof7xxQ See Question&Answers more detail:os...

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

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257 views

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sql server - Optimized SQL for tree structures

How would you get tree-structured data from a database with the best performance? For example, say you ... perspectives are interesting too. See Question&Answers more detail:os...

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

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