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How to convert a data frame column to numeric type?
... you want to convert to numeric. I suggest that you should apply transform function in order to complete your task.
Now I'm about to demonstrate certain "conversion anomaly":
# create dummy data.frame
d <- data.frame(char = letters[1:5],
fake_char = as.character(1:5),
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How to get an enum value from a string value in Java?
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Here's a nifty utility I use:
/**
* A common method for all enums since they can't have anot...
How to insert an element after another element in JavaScript without using a library?
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Straightforward JavaScript Would Be the Following:
Append Before:
element.parentNode.insertB...
How to add Web API to an existing ASP.NET MVC 4 Web Application project?
....Routing, System.Web.Net and System.Net.Http?
– gabed123
Mar 7 '19 at 23:04
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NoSQL - MongoDB vs CouchDB [closed]
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If you are coming from the MySQL world, MongoDB is going to "feel" a lot more natural to you b...
Why did my Git repo enter a detached HEAD state?
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I reproduced this just now by accident:
lists the remote branches
git branch -r
origi...
select * vs select column
... order; all his code broke as soon as someone else changed the table. What fun we had.
– Paul McKenzie
Jul 5 '10 at 15:06
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Why doesn't String switch statement support a null case?
... Paul BelloraPaul Bellora
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How to format time since xxx e.g. “4 minutes ago” similar to Stack Exchange sites
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Might be an overkill in this case, but if the opportunity shows moment.js is just awesome!
Mo...
How to efficiently build a tree from a flat structure?
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Store IDs of the objects in a hash table mapping to the specific object. Enumerate through all...