nested

Python: Sort a Nested List With Specific Criteria

由 流过昼夜 提交于 2019-12-13 04:00:54
问题 As a beginner of Python I recently get stuck for a problem of sorting a nested list with specific criteria. I have a nested list like this: nestedList=[['R2D2','1path1','1path2'], ['R3A1','2path1','2path2'], ['R15L2','3path1','3path2']] I would like this list to be sorted by the first string in each nested list. The result would look like: nestedList=[['R15L2','3path1','3path2'], ['R3A1','2paht1','2path2'], ['R2D2','1path1','1path2']] Currently my solution is only use the sort function with

How to query nested objects?

由 怎甘沉沦 提交于 2019-12-13 03:58:02
问题 I have a problem when querying mongoDB with nested objects notation: db.messages.find( { headers : { From: "reservations@marriott.com" } } ).count() 0 db.messages.find( { 'headers.From': "reservations@marriott.com" } ).count() 5 I can't see what I am doing wrong. I am expecting nested object notation to return the same result as the dot notation query. Where am I wrong? 回答1: db.messages.find( { headers : { From: "reservations@marriott.com" } } ) This queries for documents where headers equals

How to query nested json with internal arrays in Spark on basis of equality check

由 和自甴很熟 提交于 2019-12-13 03:46:54
问题 I have a nested json structure loaded into a dataframe in spark. It contains several layers of arrays and I'm trying to figure out how to query this structure by values in the internal arrays. Example: consider the following structure (directors.json file) [ { "director": "Steven Spielberg", "films": [ { "name": "E.T", "actors": ["Henry Thomas", "Drew Barrymore"] }, { "name": "The Goonies", "actors": ["Sean Astin", "Josh Brolin"] } ] }, { "director": "Quentin Tarantino", "films": [ { "name":

Code to evaluate an integral: translating from Matlab to R

由 喜夏-厌秋 提交于 2019-12-13 03:43:02
问题 Consider the following Matlab code to approximate integrals using simulation. function f numSim = 1000000; points = rand(numSim,1); r3 = mean(feval('func3', points)); points1 = rand(numSim,1); r8 = mean(feval('func8', points, points1)); disp([r3, r8,]); end %f %%%%%%%%%% Nested funcitons %%%%%%%%%%%% function y = func3(x) y = exp(exp(x)); end %func3 function z = func8(x,y) z = exp((x+y).^2); end %func8 What I've tried in R f <- function (func3,func8){ numSim <- 1000000 points <- runif(numSim)

HTML email with tables nesting

由 自闭症网瘾萝莉.ら 提交于 2019-12-13 03:38:38
问题 I'm writing some html code to make an html email. I've done some research and I found that using old school html, such as tables etc is the best way to do this. After all your help with previous problems (thank you!) I started working on the rest and making the layout easy to read on mobile devices, this is what I have now; <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <meta name="viewport" content="initial-scale=1.0"> <meta name="format-detection" content=

Render a Nested Element based on nested Array

由 此生再无相见时 提交于 2019-12-13 03:36:57
问题 I got this nested arrays and I need to loop through it to create nested containers. lvl4 should go inside lvl3 , lvl3 to lvl2 and lvl2 inside lvl1 . const elements = [ { name: 'a-lvl1', innerEl: [ { name: 'a1-lvl2', innerEl: [ { name: 'a1-lvl3' , innerEl: [ { name: 'a-lvl4', innerEl: [] } ] }, { name: 'a2-lvl3' , innerEl: [ { name: 'a-lvl4', innerEl: [] } ] } ] }, { name: 'a2-lvl2', innerEl: [ { name: 'a-lvl3' , innerEl: [ { name: 'a-lvl4', innerEl: [] } ] } ] }, { name: 'a3-lvl2', innerEl: [

Chain of SQL subqueries within large query of JOINS

由 偶尔善良 提交于 2019-12-13 03:35:54
问题 I am trying to structure a SQL query with complex nested select operation! My original SQL query successfully JOINS around 30 tables, the data are retrieved as wanted! However every fetched record in the 30 tables has many records in another table called (Comments)! What I want to do is to atribute every record in the (Comments table) to its record in the other 30 tables by IDs and retrieve them all together in one query. Yet this is not the only challenge, some of the 30 tables have in

Zip nested list with list in Python

由 前提是你 提交于 2019-12-13 03:35:10
问题 Python newbie here. I have four lists, three of which are nested lists and one that isn't. I'm searching for a way to zip the nested lists with the list such that the zip function compares each nested list item with the corresponding item in the main list. main = [1,3] a = [[1,2,3][4,5,6]] b = [[0,1,2][3,4,5]] c = [[2,3,4][5,6,7]] >>>[[[True, False, False],[False,True,False],[False,False,False]], [[False,False,False],[True,False,False],[False,False,False]]] I tried something like this: abc =

Calling different programs with different options and different arguments for each option

由 十年热恋 提交于 2019-12-13 03:11:24
问题 I am trying to make a script that can execute a different number of programs simultaneously (prog1, prog2,...prog5, or even more). It can be prog1 only , or prog1&prog2, or prog1&prog2&prog3, prog1&prog3&prog4&prog6&prog8 Each program can be called with different options and will execute different things depending on it's calling options. For instance prog1 can be called in these different ways: prog1 -d "-f 10 -g 20" (-d is an option and "-f 10 -g 20" arguments for that specific option)

Allocating memory for nested structure pointer

由 放肆的年华 提交于 2019-12-13 02:48:28
问题 I am using a C code generator that is creating header files with following structures: typdef struct Place { struct Forest { int trees; } *Forest; } Place ; And using them in a c++ project. When I try to access Place.Forest->trees, I get a segfault because Place.Forest is a dangling pointer. I can't properly malloc it because Place.Forest = malloc(sizeof(Place.Forest)); will just return the size of the pointer. I can't use Place.Forest=malloc(sizeof(struct Forest)); Because I am accessing
订阅 nested