Month: January 2023

[Solved] Memory issues in-memory dataframe. Best approach to write output?

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I have been using the following snippet: library(data.table) filepaths <- list.files(dir) resultFilename <- “/path/to/resultFile.txt” for (i in 1:length(filepaths)) { content <- fread(filepaths, header = FALSE, sep = “,”) ### some manipulation for the content results <- content[1] fwrite(results, resultFilename, col.names = FALSE, quote = FALSE, append = TRUE) } finalData <- fread(resultFilename, header = FALSE, … Read more

[Solved] With an array of strings of equal length, get the nth character of each string in it’s own array using LINQ

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A quick test shows that setting @jdweng’s purely LINQ solution 1X, a solution somewhat abusing LINQ to do indexing comes in at 7.4X and a solution using for comes in at 28.4X. (Ab)using LINQ with indexing: var c = Enumerable.Range(0, source[0].Length).Select(chpos => Enumerable.Range(0, source.Length).Select(si => source[si][chpos]).Join()).ToArray(); Using nested for loops: var sourcelen = source.Length; var … Read more

[Solved] converting XMLHTTPRequest into $ajax

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Here’s a jQuery version of the code: $.ajax({ url : ‘https://www.google.co.uk’, //cross-domain? this won’t work username : ‘user’, password : ‘password’, type : ‘GET’, //default is GET, but i put it here to clarify success : function(data){ $(‘#listAttributes’).html(data); } }); For more details and settings, read the jQuery.ajax() documentation 1 solved converting XMLHTTPRequest into $ajax

[Solved] how to integrate firebase performance monitoring in Android [closed]

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1. Go to project level build.gradle and add buildscript { repositories { jcenter() mavenLocal() google() } dependencies { //Your gradle version example classpath ‘com.android.tools.build:gradle:3.1.3’ //play services plugin example classpath ‘com.google.gms:google-services:3.2.0’ classpath ‘com.google.firebase:firebase-plugins:1.1.5’ // NOTE: Do not place your application dependencies here; they belong // in the individual module build.gradle files } } 2. App level … Read more

[Solved] Is it possible to change only the picture? [closed]

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Weave: http://kodeweave.sourceforge.net/editor/#b49e1b998a030e3dc8084c2771498a38 You can do this a few ways either using an if else statement or a ternary operator. var changeIMG = document.querySelector(“.changeIMG”) var oldSrc=”http://i.telegraph.co.uk/multimedia/archive/02223/bear-cub-toy_2223075k.jpg” var newSrc=”http://image.mlive.com/home/mlive-media/width960/img/grandrapidspress/photo/2015/03/20/-6328b3da95a15820.JPG” function changeSrc() { var imgElement = document.querySelector(“.bears”) var src = imgElement.src imgElement.src = src === oldSrc ? newSrc : oldSrc } changeIMG.onclick = function() { changeSrc() } changeSrc() … Read more

[Solved] i want to store a value in jquery var and pass it [closed]

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All of your code needs to be in $(document).ready function.. Like this: $(document).ready(function() { //You can alternatively pass an object: $(‘#player’).youTubeEmbed({ video: ‘http://www.youtube.com/watch?v=uyeJXKfAcpc’, width: 640, // Height is calculated automatically progressBar: true // Hide the progress bar }); var yid = $(“input[name=”youtube-id”]”).val(); $(‘#player’).youTubeEmbed({ video: ‘http://www.youtube.com/watch?v=’ + yid, width: 640, // Height is calculated automatically progressBar: … Read more

[Solved] why the program with static main() type shows error?

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In C, static is the primary way of “hiding” implementation details. Marking a function or a variable static in C means restricting its visibility to the translation unit in which it is defined. Essentially, only functions inside the same C file can refer to them. Functions from other files or libraries have no way of … Read more