Unique (non-repeating) random numbers in O(1)?

Unique (non-repeating) random numbers in O(1)?

I'd like to generate unique random numbers between 0 and 1000 that never repeat (i.e. 6 doesn't show up twice), but that doesn't resort to something like an O(N) search of previous values to do it. Is this possible? 1:Initialize an array

How can I view the source code for a function?

How can I view the source code for a function?

I want to look at the source code for a function to see how it works. I know I can print a function by typing its name at the prompt:> tfunction (x) UseMethod("t")In this case, what does Use

DesignInstance not working in VS2012

DesignInstance not working in VS2012

I just spent several hours on an issue when using VS2012, WPF 4.5 and design-time data, specifically the DesignInstance attribute.Goal: I wanted to have design-time data support in my WPF project (MVVM-based), both in VS2012 and Blend, and

Part of fragment inside ViewPager getting cut off at bottom of screen(Android)

Part of fragment inside ViewPager getting cut off at bottom of screen(Android)

I have defined a basic Coordinator layout for my view: There are multiple tabs in my view pager. I am posting one of my simple fragments:What happens is that the FAB goes out of screen. It's just not the FAB, but

ImageView.setImageURI does NOT work when trying to assign a R.drawable.X Uri

ImageView.setImageURI does NOT work when trying to assign a R.drawable.X Uri

is related to:Need suggestion about a mixed "Uri / int id" images ambientnow my problem is that:ImageView imgView=(ImageView)findViewById(R.id.imgView);Uri imgUri=Uri.parse("android.resource://my.package.name/"+R.drawable.image);imageView.s

Bootstrap Datepicker appearing at incorrect location in a modal

Bootstrap Datepicker appearing at incorrect location in a modal

I have a button on a page that calls a modal having datepicker.If this button is at top (I don't have to scroll page to click), modal opens and datepicker displays correctly.But if this button is lower on the page( so that I have to scroll

in pycharm, how to go back to last location

in pycharm, how to go back to last location

i've tried these answers, but nothing happened:Keyboard shortcut for Jump to Previous View Location (Navigate back/forward) in IntelliJ Ideafor example:i'm navigating to a function body,put the cursor on a function call,click F12 ("go to de

MVC3 AntiForgeryToken Issue

MVC3 AntiForgeryToken Issue

I am trying to implement AntiForgeryToken for my MVC3 Application. I am having a problem with AntiForgeryToken after setting FormAuthentication cookie. Here is a simple example which explains my problem. I have home controller with followin

Reading RTCP packets from an IP camera using FFMPEG

Reading RTCP packets from an IP camera using FFMPEG

I am using ffmpeg C++ library. I need to intercept RTCP packets from the camera in order to get the timestamp from the Sender Report. Is there any method or structure in the ffmpeg that gives me this information? I am completely stuck but I

How to set up wxWidgets 3.1.0 with Visual Studio 2015

How to set up wxWidgets 3.1.0 with Visual Studio 2015

I am somewhat of a beginner when it comes to open source libraries. I have tried to compile from source and use the pre-built binaries, but in both cases I get a ton of errors when I try to run the simple 'Hello World' program on the tutori

http://localhost/phppgadmin/ -> 403 Forbidden

http://localhost/phppgadmin/ -> 403 Forbidden

I try to install postgreSql on my wampserverSo I follow some tutorial and some other...But when I access to localhost/phppgadmin/, an error occurs:ForbiddenYou don't have permission to access /phppgadmin/ on this server.Though I active php_

create jar with custom manifest with multiple libraries in classpath

create jar with custom manifest with multiple libraries in classpath

I'm trying to create a jar from my eclipse and in order to be able to use the external .jars, I'm using this manifest with multiple .jars in the classpath:Manifest-Version: 1.0Sealed: trueMain-Class: src.BatchTesterClass-Path: . P:/Tools/xs

How to Inject EPartService

How to Inject EPartService

I am developing e4 application. I want to inject EPartService outside the Part and Handlerwhen i am injecting EPartService then i will get null pointer error public class DisplayRuntimePart { @Inject EPartService partService;

Google Drive Sdk- Audio & Video Streaming in iOS Application

Google Drive Sdk- Audio & Video Streaming in iOS Application

Hi Google Drive Staff,I have tried to stream video files from Google Drive(Without Downloading). But I gets alerts that Sign In. I have went thoroughly with Dr. Edit sample App but i did not found any solution. I tried with downloadUrl , e

What is the jasperrepots-fonts jar for and how to use it?

What is the jasperrepots-fonts jar for and how to use it?

i'm evaluating JasperReports for report generation. I have some problems with report portability between Windows and Linux. I found a (hacky) solution to make it work cross platform. However i wonder what is the jasperreports-fonts for:

Create C# executable with mkbundle on windows

Create C# executable with mkbundle on windows

Im trying to create an executable from a console application.I have installed mono,cygwin (mingw-gcc, mingw-zlib1, mingw-zlib-devel, pkg-config) and I have added the following lines to my .bashrc fileexport PKG_CONFIG_PATH=/cygdrive/c/progr

Compiling mexopencv in OS X 10.9 with Xcode 5 and Matlab R2013b

Compiling mexopencv in OS X 10.9 with Xcode 5 and Matlab R2013b

I'm interested in using Kota Yamaguchi's mexopencv library on my system with the following specifications:OS X 10.9 (Mavericks)Xcode 5Matlab 2013bOpenCV installed via macports to /opt/local/include/{opencv,opencv2} and /opt/local/libI git c

Membership.ValidateUser always returns false after upgrade to VS 2010 / .NET 4.0

Membership.ValidateUser always returns false after upgrade to VS 2010 / .NET 4.0

Not sure whether this pertains to VS 2010 or to the upgraded framework, but... we are using the Oracle membership provider to authenticate users. Prior to the upgrade everything worked fine, but now Membership.ValidateUser(user, password) r

Scrolling with Collapsing Toolbar and Tabs

Scrolling with Collapsing Toolbar and Tabs

I'm trying to make a layout with a CollapsingToolbarLayout which has scroll|exitUntilCollapsed flag, and a TabLayout which has scroll|enterAlways scrollFlag property. Basically I want my toolbar to be pinned and show and hide the tabs while

Tomcat Webapp on port 80 [duplicate]

Tomcat Webapp on port 80 [duplicate]

This question already has an answer here: How to change the port of Tomcat from 8080 to 80? 15 answers I have a webapp on my tomcat server like this:my

Easiest way to inject code to all methods and properties that don't have a custom attribute

Easiest way to inject code to all methods and properties that don't have a custom attribute

There are a a lot of questions and answers around AOP in .NET here on StackOverflow, often mentioning PostSharp and other third-party products. So there seems to be quite a range of AOP optons in the .NET and C# world. But each of those has

Wait until all Task finish in unit test

Wait until all Task finish in unit test

I have this class I want to unit test:public class SomeClass{ public void Foo() { Bar(); } private void Bar() { Task.Factory.StartNew(() => { // Do something that takes some time (e.g. an HTTP

User (IPrincipal) not avaliable on ApiController's constructor using Web Api 2.1 and Owin

User (IPrincipal) not avaliable on ApiController's constructor using Web Api 2.1 and Owin

I am Using Web Api 2.1 with Asp.Net Identity 2. I am trying to get the authenticated User on my ApiController's constructor (I am using AutoFac to inject my dependencies), but the User shows as not authenticated when the constructor is call

Heatmap based on average weights and not on the number of data points

Heatmap based on average weights and not on the number of data points

I am making a heatmap with Google API v3. I'll give an example. Lets consider earthquake magnitudes. I assign weights to each point to specify their magnitude. However google considers the density of points when you zoom out. The more poin

Custom components with multiple yield-like sections

Custom components with multiple yield-like sections

I'm trying to create an ember.js component which contains multiple content sections. The intuitive way to express the desire is to use semantic sub-components which will later be rendered in appropriate places so that, e.g.{{data-table …}}