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Convert data.frame column format from character to factor
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# To do it for all names
df[] <- lapply( df, factor) # the "[]" keeps the dataframe structur...
Why does Math.round(0.49999999999999994) return 1?
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Source code in JDK 6:
public static long round(double a) {
return (long)Math.floor(a + 0.5...
Create list of single item repeated N times
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gaefangaefan
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Have a fixed position div that needs to scroll if content overflows
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}
This fork of your fiddle shows my fix:
http://jsfiddle.net/strider820/84AsW/1/
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Remove all child elements of a DOM node in JavaScript
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Use modern Javascript, with remove!
const parent = document.getElementById("foo")
while (parent...
Best way to load module/class from lib folder in Rails 3?
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The magic of autoloading stuff
I think the option controlling the folders from which autoloadi...
Does anyone have benchmarks (code & results) comparing performance of Android apps written in Xamari
...Phone 6s:
iOS version: 10.3.3
Central-processing unit: Dual-core 1.84 GHz Twister
RAM: 2 GB
Display resolution: 1334×750
Comparison is made on a few common features, each one with its own application :
- Basic “Hello World”
- REST API
- JSON Serialization/Deserialization
- Ph...
Stop Visual Studio from mixing line endings in files
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On the File menu, choose Advanced Save Options, you can control it there.
Edit: Here's the doc...
How to implement a ConfigurationSection with a ConfigurationElementCollection
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+100
If you ...
How do you create a random string that's suitable for a session ID in PostgreSQL?
...nKraWduR0J
R5xEfIZEllNynJR
tMAxfql0iMWMIxM
aPSYd7pDLcyibl2
3fPDd54P5llb84Z
VeywDb53oQfn9GZ
BJGaXtfaIkN4NV8
w1mvxzX33NTiBby
knI1Opt4QDonHCJ
P9KC5IBcLE0owBQ
vvEEwc4qfV4VJLg
ckpwwuG8YbMYQJi
rFf6TchXTO3XsLs
axdQvaLBitm6SDP
(15 rows)
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