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How to convert a factor to integer\numeric without loss of information?
...
The most easiest way would be to use unfactor function from package varhandle
unfactor(your_factor_variable)
This example can be a quick start:
x <- rep(c("a", "b", "c"), 20)
y <- rep(c(1, 1, 0), 20)
class(x) # -> "character"
class(y) # -> "numeric"
x <- fa...
Objective-C categories in static library
...rt summary of my searches and experiments.
Problem was caused by (citation from apple Technical Q&A QA1490 https://developer.apple.com/library/content/qa/qa1490/_index.html):
Objective-C does not define linker
symbols for each function (or method,
in Objective-C) - instead, linker
symbols are o...
How do I align views at the bottom of the screen?
... a bar at the bottom and then a LinearLayout above this bar that stretches from the top of the screen to the bar.
– Janusz
Oct 18 '14 at 10:45
1
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how to detect search engine bots with php?
...P is the same as the one of the site's visitor, you're sure it's a crawler from that search engine.
I've written a library in Java that performs these checks for you. Feel free to port it to PHP. It's on GitHub: https://github.com/optimaize/webcrawler-verifier
...
Flask raises TemplateNotFound error even though template file exists
...emplates by default. So your code should be
suppose this is your hello.py
from flask import Flask,render_template
app=Flask(__name__,template_folder='template')
@app.route("/")
def home():
return render_template('home.html')
@app.route("/about/")
def about():
return render_template('abo...
How to lazy load images in ListView in Android
... images and captions associated with those images. I am getting the images from the Internet. Is there a way to lazy load images so while the text displays, the UI is not blocked and images are displayed as they are downloaded?
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When use getOne and findOne methods Spring Data JPA
...ry most of cases, favor findOne()/findById() over getOne().
API Change
From at least, the 2.0 version, Spring-Data-Jpa modified findOne().
Previously, it was defined in the CrudRepository interface as :
T findOne(ID primaryKey);
Now, the single findOne() method that you will find in CrudRepos...
Bash: Syntax error: redirection unexpected
...
Docker:
I was getting this problem from my Dockerfile as I had:
RUN bash < <(curl -s -S -L https://raw.githubusercontent.com/moovweb/gvm/master/binscripts/gvm-installer)
However, according to this issue, it was solved:
The exec form makes it possi...
Why is i++ not atomic?
...d be inappropriate to use the atomic i++. What's worse, programmers coming from C or other C-like languages to Java would use i++ anyway, resulting in unnecessary use of atomic instructions.
Even at the machine instruction set level, an increment type operation is usually not atomic for performance...
The difference between sys.stdout.write and print?
...n 2.6+, print is still a statement, but it can be used as a function with
from __future__ import print_function
Update: Bakuriu commented to point out that there is a small difference between the print function and the print statement (and more generally between a function and a statement).
In...