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Subset of rows containing NA (missing) values in a chosen column of a data frame
We have a data frame from a CSV file. The data frame DF has columns that contain observed values and a column ( VaR2 ) that contains the date at which a measurement has been taken. If the date was not recorded, the CSV file contains the value NA , for missing data.
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How long do browsers cache HTTP 301s?
.../settings/clearBrowserData and from there only clearing "cached images and files" cleared the redirect.
Chrome 48-70
Go to chrome://net-internals. On the right of the top red status bar, click on the down arrow ▼ to open the drop-down menu, and under the "Tools" group, choose "Clear cache".
As ...
Sending an HTTP POST request on iOS
...ownloadTask() {
// Create destination URL
let documentsUrl:URL = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first as URL!
let destinationFileUrl = documentsUrl.appendingPathComponent("downloadedFile.jpg")
//Create URL to the source file you want to downl...
What is resource-ref in web.xml used for?
...en/why you would define a <resource-ref> element in your web.xml file?
1 Answer
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extra qualification error in C++
...Visual Studio plugin for Cppcheck (but it's buggy and do not detect in all files)
– altumano
Mar 6 '15 at 11:08
3
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How can I get the diff between all the commits that occurred between two dates with Git?
...is gives a diff for each commit, even if there are multiple commits in one file. I know that "date" is a bit of a loose concept in git, I thought there must be some way to do this.
git diff 'master@{1 day ago}..master gives some warning warning: Log for 'master' only goes back to Tue, 16 Mar 2010 14...
Access-control-allow-origin with multiple domains
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Where can I add this code? I have plain text files generated by server and read via AJAX, no code at all. Where can I put the code to restrict access to text files in my directory?
– Harry
Feb 5 '14 at 12:58
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Where can I get a list of Ansible pre-defined variables?
...ovide some pre-defined variables that we can use in playbooks and template files. For example, the host ip address is ansible_eth0.ipv4.address. Googleing and searching the docs I cound't find a list of all available variables. Would someone list them for me?
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Resharper- Find all unused classes
I know how to find unused references of a single file by right clicking on the file and selecting the "Find Usages" option. Is there any way I can see or get the list of all the unused classes or files in my project ?
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iOS: Access app-info.plist variables in code
...a Universal app & would like to access the values stored in app-info.plist file in my code.
5 Answers
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