Find intersection of two nested lists?

I know how to get an intersection of two flat lists: b1 = [1,2,3,4,5,9,11,15] b2 = [4,5,6,7,8] b3 = [val for val in b1 if val in b2] or def intersect(a, b): return list(set(a) &...

Where is the WPF Numeric UpDown control?

Getting into the first serious WPF project. It seems like there are a lot of basic controls flat out missing. Specifically, I am looking for the Numeric UpDown control. Was there an out of band...

How to make a flat list out of a list of lists

Is there a shortcut to make a simple list out of a list of lists in Python? I can do it in a for loop, but is there some cool "one-liner"? I tried it with functools.reduce(): from functools import...

Sort a file with huge volume of data given memory constraint

Points: We process thousands of flat files in a day, concurrently. Memory constraint is a major issue. We use thread for each file process. We don't sort by columns. Each line (record) in the...

REST Complex/Composite/Nested Resources

I'm trying to wrap my head around the best way to address concepts in a REST based API. Flat resources that don't contain other resources are no problem. Where I'm running into trouble are the...

power of 2 in x86 assembly, calculate 2^x that doesn't fit in a 32-bit register

As a starter in ASM programming i am need to get the result of 2 to the power of 38 in Assembly, and i need your help in understanding why is my program doesn't produce the result i am need (it...

get errors when import lxml.etree to python

i have installed an lxml on my mac, when i type in python like this localhost:lxml-3.0.1 apple$ python Python 2.7.3 (v2.7.3:70274d53c1dd, Apr 9 2012, 20:52:43) [GCC 4.2.1 (Apple Inc. build...

Parse html form into a list of dicts in python / Flask

I am new to web programming and this is my first SO question, so hopefully I am asking the right way. I am building a simple survey-maker (similar to google forms or survey monkey) and I have a...

Amazon RDS w/ SQL Server wont allow bulk insert from CSV source

I've tried two methods and both fall flat... BULK INSERT TEMPUSERIMPORT1357081926 FROM 'C:\uploads\19E0E1.csv' WITH (FIELDTERMINATOR = ',',ROWTERMINATOR = '\n') You do not have permission to...

Alternatives to Expression Blend

The transition from Blend 4 to Blend for Visual Studio is scaring me. I have installed the latest CTP for VS2012 Update 2 which includes WPF support for the built-in Blend (no longer using the...

How can I change the background color of Bootstrap modal?

As the title suggests I want to change the color of the actual modal, not the shaded area behind the modal. As this post says. I just want to change the color of the modal. Heres some code: <div...

Differences in projecting satellite images with cartopy and pyresample

I have written a python script to project and overlay geostationary satellite images from the university of Dundee so the resulting image can be used for xplanet to render the surface of the...

Flattening Array In JavaScript- Explanation needed

I'm reading a book called Eloquent JavaScript. There's an exercise in it that requires one to flatten a heterogeneous array & after trying so long and failing to get the answer, I looked up the...

How to aggregate (min/max etc.) over Django JSONField data?

I'm using Django 1.9 with its built-in JSONField and Postgres 9.4. In my model's attrs json field I store objects with some values, including numbers. And I need to aggregate over them to find...

Format and send seamless audio from JS to local PyAudio

I'm using Unix sockets to stream audio from my microphone (via an Electron NodeJS app) to a python program listening on the socket and sending the audio to PyAudio for playback. Electron app...

Trying to write a simple program in java to calculate shipping price using else if statements and i'm thoroughly lost

for my assignment in my java class we are supposed to write a shipping calculator to calculate final shipping cost based on "flat rates" per "weight class" per "500 miles shipped" the instructions...

Converting / Flattening RMS indexed files from OpenVMS

I was attempting to convert some Indexed files created on the OpenVMS to plain flat sequential files to be used in Windows or Linux. Each indexed files contains x quantity of of POD structures...

How to set Refresh Indicator of FlatList in react native?

I'm trying to set the refresh indicator of flat list in react native but don't know how to do it. List View has this prop : refreshControl={<RefreshControl colors={["#9Bd35A",...

Microsoft Graph API : Is it possible to traverse recursive over Folders

We are converting from mail EWS into Microsoft office 365 Graph API, I want to flat all my Folder tree into list of flat folders, so each entry in list should contain: Folder:{parentId, myId} ,...

Comparison of loading from different file formats in BigQuery

We currently load most of our data into BigQuery either via csv or directly via the streaming API. However, I was wondering if there were any benchmarks available (or maybe a Google engineer could...

.flat() is not a function, what's wrong?

The following code function steamrollArray(arr) { // I'm a steamroller, baby return arr.flat(); } steamrollArray([1, [2], [3, [[4]]]]); returns arr.flat is not a function I tried it in...

Djongo redefine the structure of ArrayModelField

I am defining ArrayModelField using Djongo. It looks great, but the problem with ArrayModelField is I can only add it as Array of Objects, not just Flat List. Is there any way by which I can add...

To fix, cancel all subscriptions and asynchronous tasks in a useEffect cleanup function

I have this code import ReactDOM from "react-dom"; import React, { useState, useEffect } from "react"; import { BrowserRouter as Router, Route, Link } from "react-router-dom"; function...

React not re-rendering after array state update

I have a checkbox list UI that is rendered from an array. After I update the array the checkbox list state does not update. I moved the code where the list is mapped but it does not change the...

Import pyaudio doesn't work - Symbol not found: _PaMacCore_SetupChannelMap on mac (Big Sur M1 Apple Silicon)

I am trying to install pyaudio on my new Macbook Air with the M1 chip (Big Sur). At first I couldn't get past the famous src/_portaudiomodule.c:29:10: fatal error: 'portaudio.h' file not found...

When using combine in SwiftUI to update a Lottie Animation, it fails to update at the right time and gives an unexpected result

I have this ViewModel that uses combine along with a timer and I want this ViewModel to update a LottieView and filename with a new animation. When the timer counts down I want it to publish and...

Facebook product XML feed error: There is no ProductItem for the id field with the specified id

I trying to validate XML feed by facebook validator: https://business.facebook.com/ads/product_feed/debug I was trying to validate several XML feeds from googling. All of them give one mistake:...

Is there way in ggplot2 to place text on a curved path?

Is there a way to put text along a density line, or for that matter, any path, in ggplot2? By that, I mean either once as a label, in this style of xkcd: 1835, 1950 (middle panel), 1392, or 2234...

Could not import the PyAudio C module '_portaudio'. (Mac M1), about Symbol not found: _PaMacCore_SetupChannelMap

I'm trying to import pyaudio on my Macbook with M1 chip. I have python version 3.9.6 and anaconda (python 3.8), and now using version on terminal is 3.9.6. Before I get this error, I fixed 'brew...

Import multiple flat files in the same folder to SQL Server using flat file name as table name

I have been searching for an efficient way of uploading 100's of text files in the same folder to an SQL Server with one click of a button. I perform this every month, manually mapping the tables....

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