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android - Get frequency wav audio using FFT and Complex class

It's been asked a lot, but I still stuck about implement FFT class on Android I need to process my audio ... help would be 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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connecting MySQL server to NetBeans

I am trying to connect MySQL database in Netbeans and stuck at the very first step- connecting the database. My ... i doing wrong here??? See Question&Answers more detail:os...

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

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64 bit - C# ReadProcessMemory: How to read a 64 bit memory address?

I am getting into reading application memory. I am using CheatEngine to get a memory address and then trying to ... to read 64 bit addresses. See Question&Answers more detail:os...

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

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objective c - Why is autorelease especially dangerous/expensive for iPhone applications?

I'm looking for a primary source (or a really good explanation) to back up the claim that the use of autorelease ... it. What's the real story? See Question&Answers more detail:os...

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

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memory - What are uses of the C++ construct "placement new"?

I just learned about the C++ construct called "placement new". It allows you to exactly control where a ... the same location in memory. See Question&Answers more detail:os...

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

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regex - Matching balanced parenthesis in Ruby using recursive regular expressions like perl

I have been looking for a way to match balanced parenthesis in a regex and found a way in Perl, that ... 1.9 Regular Expressions Sample Chapter See Question&Answers more detail:os...

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

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jboss7.x - Using log4j with JBoss 7.1

How can I use log4j with JBoss 7.1? I have a log4j-1.2.16.jar in my WebContent/WEB-INF/lib folder. ... unter WEB-INF/classes) is ignored. See Question&Answers more detail:os...

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

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java - Future task of ExecutorService not truly cancelling

I push my Futures from a ExecutorService into a hash map. Later, I may call cancel on Futures from within the hash ... a better was to do 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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javascript - Firebase TypeError: Cannot read property 'val' of undefined

I have tried Firebase cloud function for sending a notification.My project structure and this is the index.js, const ... be happy to provide it. See Question&Answers more detail:os...

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

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objective c - Is it possible to detect that your iOS app is running on an iPad mini at runtime?

Detecting different hardware at runtime is useful for analytics (among other, even more questionable purposes). Many ... the community to know. 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# - update app.config file programmatically with ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);

update app.config file programmatically with Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None ... ); See Question&Answers more detail:os...

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

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macos - How to get serial number from Mac hard disks?

Is there an easy way to get the serial number of all the hard disks in a Mac using an API? Basically, I'm ... this solution for 10.4 and above. See Question&Answers more detail:os...

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

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JSON to javaScript array

I'm having a problem handling JSON data within JavaScript, specifically in regards to using the data as an ... would be greatly 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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jsf - How detect and remove (during a session) unused @ViewScoped beans that can't be garbage collected

EDIT: The problem raised by this question is very well explained and confirmed in this article by codebulb. ... to inadvertent GET navigations. 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# - IFilterProvider and separation of concerns

I have a situation where I need to inject some dependencies in a action filter, namely, my custom authorization ... , what could be improved. 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 - Find names of top-n highest-value columns in each pandas dataframe row

I have the following dataframe: id p1 p2 p3 p4 1 0 9 1 4 2 0 2 3 4 3 1 3 10 7 4 1 5 3 1 5 ... in R, but I am looking for the pandas equivalent. 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/jquery - add debounce to a button

I want to add a debounce to a button, but i want to perform some actions each time user clicks button, but ... , $.debounce(process, 5000)); See Question&Answers more detail:os...

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

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Rotate image math (C#)

I have an image with two points, aligned something like this: |----------------| | | | . | | | ... in C# would be even better but not required) See Question&Answers more detail:os...

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

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swing - Embed google maps in Java desktop Application

I want to embed google maps on a JPanel. Since I want features like zoom-in/out, using static images isn ... webpage to display google maps. 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 - Difference between mutation, rebinding, copying value, and assignment operator

#!/usr/bin/env python3.2 def f1(a, l=[]): l.append(a) return(l) print(f1(1)) print(f1(1 ... , rebinding, copying value, and assignment operator. See Question&Answers more detail:os...

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

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java - ejb lookup failing with NamingException

I've added the following in my web.xml: <ejb-ref> <ejb-ref-name>ejb/userManagerBean</ejb-ref- ... .EjbClient.getUserManager(EjbClient.java:34) 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++ - OpenCV SURF function is not implemented

When I try to run the sample find_obj.cpp or any OpenCV SURF program I get the following error in command prompt ... , params); return 0; } See Question&Answers more detail:os...

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

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Redirect non-www requests to www URLs in Ruby on Rails

It is a simple issue, but I can't seem to find an answer doing some quick googling. What's the Ruby on ... www.x.com/abc). A before_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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javascript - Why does my canvas go blank after converting to image?

I am trying to convert the canvas element on this page to a png using the following snippet (e.g. enter in ... convert this canvas to a png? See Question&Answers more detail:os...

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

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cocoa - Why NSWindow without styleMask:NSTitledWindowMask can not be keyWindow?

Problem: I have one window mainWindow and another childWindow added to mainWindow. childWindow is kind of WindowExt ... 't become keyWindow. See Question&Answers more detail:os...

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

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318 views

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How to prefill Google form checkboxes?

I have looked at the question "Is it possible to 'prefill' a google form using data from a google ... Google form question? Thanks, Greig See Question&Answers more detail:os...

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

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590 views

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cross browser - Sending correct file size with PHP download script

I created a file download script in PHP, it works, but web browsers report the file as "Unknown Length". ... AFTER FILE DOWNLOAD exit; } See Question&Answers more detail:os...

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

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684 views

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wcf - Connecting via named pipe from windows service (session#0) to desktop app (session #1)

Given: - the application - desktop GUI (WPF) .NET app - windows service watching for application (.NET also) ... and go the raw NamedPipe way. See Question&Answers more detail:os...

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

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