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How do I replace NA values with zeros in an R dataframe?
...n @gsk3 answer. A simple example:
> m <- matrix(sample(c(NA, 1:10), 100, replace = TRUE), 10)
> d <- as.data.frame(m)
V1 V2 V3 V4 V5 V6 V7 V8 V9 V10
1 4 3 NA 3 7 6 6 10 6 5
2 9 8 9 5 10 NA 2 1 7 2
3 1 1 6 3 6 NA 1 4 1 6
4 NA 4 NA 7 10 2 NA 4 1 8...
Start thread with member function
...= w->member1Thread();
std::thread tw2 = w->member2Thread("hello", 100);
tw1.join();
tw2.join();
return 0;
}
Compiling with g++ produces the following result
g++ -Wall -std=c++11 hello.cc -o hello -pthread
i am member1
i am member2 and my first arg is (hello) and second arg is (...
What is the standard way to add N seconds to datetime.time in Python?
...t get the time value.
For example:
import datetime
a = datetime.datetime(100,1,1,11,34,59)
b = a + datetime.timedelta(0,3) # days, seconds, then other fields.
print(a.time())
print(b.time())
results in the two values, three seconds apart:
11:34:59
11:35:02
You could also opt for the more read...
jQuery: click function exclude children.
...relative;
}
#childElement{
margin-top:50px;
margin-left:50px;
width:100px;
height:100px;
background-color:yellow;
position:absolute;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div id="parentElement">
<div id="chil...
Can I set a TTL for @Cacheable
...cheBuilder.newBuilder().expireAfterWrite(30, TimeUnit.MINUTES).maximumSize(100).build().asMap(), false);
}
};
return cacheManager;
}
@Override
public KeyGenerator keyGenerator() {
return new DefaultKeyGenerator();
}
}
...
AngularJS passing data to $http.get request
.../www.your-website.com/api/users.json', {
params: {page: 1, limit: 100, sort: 'name', direction: 'desc'},
headers: {'Authorization': 'Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ=='}
}
)
.then(function(response) {
// Request completed successfully
}, function(x) {
// Request error
})...
Haskell: Lists, Arrays, Vectors, Sequences
...ng wording, because if you are making many modifications (like repeatedly (100k times) evolving 100k elements ) , then you do need ST/IO Vector to get acceptable performance,
– misterbee
Mar 9 '12 at 3:08
...
How do I connect to this localhost from another computer on the same network?
...ing a local hostname on a mobile device: Using SquidMan as a proxy. It's a 100% free solution. Some people can also use Charles as a proxy server but it's 50$.
On Linux, you can adapt the Mac OS way above by using Squid as a proxy server.
On Windows, you can do that using Fiddler. The solution is ...
Plot correlation matrix into a graph
... correlation matrix", xlab="", ylab="", col.regions=rgb.palette(120), cuts=100, at=seq(0,1,0.01))
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What are the main performance differences between varchar and nvarchar SQL Server data types?
...
100
Always coding/planning for a multi-lingual site (when you have no inkling that you will ever need it) is like telling all young adult they...