Restricting child/field access with security rules

Restricting child/field access with security rules

I'm writing an app that allows users to submit nominations which are moderated before being displayed to other users. This requires a number of restrictions I've so far been unsuccessful in implementing with security rules:Hide any nominati

How to count the occurrences of a list item?

How to count the occurrences of a list item?

Given an item, how can I count its occurrences in a list in Python? 1:If you only want one item's count, use the count method:>>> [1, 2, 3, 4, 1, 4, 1].count(1)3Don't use this if you want to count multiple items. Calling count in a loop

How to select a random element in std::set in less than O(n) time?

How to select a random element in std::set in less than O(n) time?

This question with an added constraint.I'm willing to allow not-uniform selection as long as it's not to lop sided. Given that "sets are typically implemented as binary search trees" and I expect they will contain some kind of depth or size

PHP Script to populate MySQL tables

PHP Script to populate MySQL tables

Is anyone aware of a script/class (preferably in PHP) that would parse a given MySQL table's structure and then fill it with x number of rows of random test data based on the field types? I have never seen or heard of something like this an

Missing makecert.exe

Missing makecert.exe

For some reason I am missing makecert.exe on my system. I searched the whole hard drive and it's not there. In particular, it's not in C:\Program Files\Microsoft SDKs\Windows\v6.0A\bin where I believe it's supposed to be. I haven't found an

iOS Push Notification custom format

iOS Push Notification custom format

I'm new to all iOS push notification domain. I have tried a basic push notification using the following code and it works perfectly. I'm using "using JdSoft.Apple.Apns.Notifications;" to accomplish this. Here's the code:Notification alertNo

Android Studio Error “output path is not specified for modules”

Android Studio Error “output path is not specified for modules”

I just recently upgraded to the newest version of Android Studio (0.1.1), but I also used Android Studio to relocate my project to my Dropbox folder. So, I'm not exactly sure which one is causing this problem. When I build or try to run my

What does &(int) { 1 } mean in C++?

What does &(int) { 1 } mean in C++?

I saw this here and I don't know what it means:&(int) { 1 }I thought it was weird because it seems like invalid syntax. It's casting a block scope(?) with a random 1 in the middle (without a semi-colon) and taking the address. Doesn't make

How to open SBT Tool Window in Intellij?

How to open SBT Tool Window in Intellij?

This question may sound silly for you, but I have been searching the Internet for a while and couldn't find the answer. How can I open SBT Tool Window in Intellij (scala and SBT plugins obviously installed)? 1:In Menu: View -> Tool Windo

Powershell: How to initialize array of custom objects?

Powershell: How to initialize array of custom objects?

I'm fairly new to PowerShell, and usually Google or searching forums like these yields the answers I seek - but not this time. So here is my question (generalized from specific task for privacy/security reasons):First, as this leads to my

Delphi 7: how to execute shell command and check the result?

Delphi 7: how to execute shell command and check the result?

I'm using Delphi 7 and can't predict the target version of Windows.I need to create a database (probably MySql, but might be something else) and define some table structures. I do not need to populate any data. Unfortunately, all of the ADO

how do I store socket resources from specific users with socket.io?

how do I store socket resources from specific users with socket.io?

I'm designing a chat script which I test on my machine using different browsers. I'm tryng to send messages to specific users with socket.io, so here it is :client:socket.on('msgFromServer', function (data) { message = data['message'

App design using Angular js

App design using Angular js

Been working on building a huge app using angular js. Have seen too many questions on the same topic on how best we can design an app, but still am lil confused.A basic app usually has a 1) Login page/Index page 2) Home page - with head

Hook LoadLibrary call from managed code

Hook LoadLibrary call from managed code

We would like to hook calls to LoadLibrary in order to download assemblies that are not found. We have a handler for ResolveAssembly that handles the managed assemblies, but we also need to handle unmanaged assemblies. We have attempted to

Multiple NULL values in column with UNIQUE index [duplicate]

Multiple NULL values in column with UNIQUE index [duplicate]

This question already has an answer here: How to create a unique index on a NULL column? 4 answers We have a table that has a unique index on a column

IPython 4 shell does not work with Sublime REPL

IPython 4 shell does not work with Sublime REPL

I am having problems with running the IPython shell from the Sublime REPL package. Here is what I get: C:\Anaconda\lib\site-packages\IPython\config.py:13: ShimWarning: The`IPython.config` package has been deprecated. You should import from

How to remove the space between two  tags? [duplicate]

How to remove the space between two tags? [duplicate]

This question already has an answer here: How do I remove the space between inline-block elements? 32 answers I have a list of spans. In the HTML file,

Object Oriented Javascript - How To Define A Class Within A Class? from a C# example

Object Oriented Javascript - How To Define A Class Within A Class? from a C# example

I know there are a lot of OO javascript questions on SO and I a have been reading a lot of resources.... BUT it is still far my most long winded learning curve so far!I am not classically trained sorry, hence I will have to just show you gu

C fgets versus fgetc for reading line

C fgets versus fgetc for reading line

I need to read a line of text (terminated by a newline) without making assumptions about the length. So I now face to possibilities:Use fgets and check each time if the last character is a newline and continuously append to a bufferRead eac

Can I append to a preprocessor macro?

Can I append to a preprocessor macro?

Is there any way in standard C—or with GNU extensions—to append stuff to a macro definition? E.g., given a macro defined as#define List foo barcan I append bas so that it List expands as if I’d defined it#define List foo bar bas?I was

Get last inserted id Sequelize

Get last inserted id Sequelize

I'm using Sequelize and I'm trying to get the last inserted ID in raw query.My query is.query(Sequelize.Utils.format(["insert into MyTable (field1, field2) values (?,?)", val1, val2])The query is done perfectly, but the result on success ev

Unable to execute dex: Multiple dex files define Lcom/google/android/gms/analytics/internal/Command

Unable to execute dex: Multiple dex files define Lcom/google/android/gms/analytics/internal/Command

I updated my Android SDK last night (31.4) and after that I canot compile my app anymore.I get this error:[2015-05-01 14:36:24 - Dex Loader] Unable to execute dex: Multiple dex files define Lcom/google/android/gms/analytics/internal/Command

Vectorization of multi-level indexing of structs in MATLAB

Vectorization of multi-level indexing of structs in MATLAB

Say I have the following in MATLAB:a(1).b.c = 4;a(2).b.c = 5;a(3).b.c = 7;....I would like to collect the values [4 5 7 ...] in a single array, without looping and in a vectorized manner.I have tried:>> a(:).b.c # Error: Scalar index requir

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

Edit distance recursive algorithm — Skiena

Edit distance recursive algorithm — Skiena

I'm reading The Algorithm Design Manual by Steven Skiena, and I'm on the dynamic programming chapter. He has some example code for edit distance and uses some functions which are explained neither in the book nor on the internet. So I'm w