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Using R to download zipped data file, extract, and import data

...to fetch the file into the temp. file Use unz() to extract the target file from temp. file Remove the temp file via unlink() which in code (thanks for basic example, but this is simpler) looks like temp <- tempfile() download.file("http://www.newcl.org/data/zipfiles/a1.zip",temp) data <- re...
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Recommended way to get hostname in Java

...is possible for many reasons. Generally, software should get the hostname from the user in a config file, that way, it is always the correct hostname. You could use InetAddress.getLocalhost().getHostName() as a default if the user does not provide a value. – Greg ...
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How to remove all event handlers from an event

...ion on the MSDN forums. The sample code below will remove all Click events from button1. public partial class Form1 : Form { public Form1() { InitializeComponent(); button1.Click += button1_Click; button1.Click += button1_Click2; button2.Click += button2_Clic...
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Client on node: Uncaught ReferenceError: require is not defined

... I am coming from an electron environment, where I need IPC communication between a renderer process and the main process. The renderer process sits in an HTML file between script tags and generates the same error. The line const {ipcRe...
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How to show the “Are you sure you want to navigate away from this page?” when changes committed?

...overflow, if you started to make changes then you attempt to navigate away from the page, a javascript confirm button shows up and asks: "Are you sure you want to navigate away from this page?" blee blah bloo... ...
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Why call git branch --unset-upstream to fixup?

...s case. Their purpose is to record things like the full URL of the places from which you git fetch or git pull updates. When you use git fetch remote,1 Git goes to that remote (using the saved URL) and brings over the appropriate set of updates. It also records the updates, using "remote-tracking...
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Convert from java.util.date to JodaTime

...rry out subtractions between dates. Is there a good concise way to convert from Date to JodaTime ? 2 Answers ...
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Prevent errors from breaking / crashing gulp watch

I'm running gulp 3.6.2 and have the following task that was set up from a sample online 8 Answers ...
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How can I mock requests and the response?

... can do it (you can run this file as-is): import requests import unittest from unittest import mock # This is the class we want to test class MyGreatClass: def fetch_json(self, url): response = requests.get(url) return response.json() # This method will be used by the mock to ...
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Numpy: Get random set of rows from 2D array

... random ~25% of the positions will be True and those positions are sampled from data_arr. – isosceleswheel Jul 24 at 3:05 ...