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Append value to empty vector in R?
...appending for larger vectors.
set.seed(21)
values <- sample(letters, 1e4, TRUE)
vector <- character(0)
# slow
system.time( for (i in 1:length(values)) vector[i] <- values[i] )
# user system elapsed
# 0.340 0.000 0.343
vector <- character(length(values))
# fast(er)
system.time(...
Populating a database in a Laravel migration file
... $table->string('email', 255);
$table->string('password', 64);
$table->boolean('verified');
$table->string('token', 255);
$table->timestamps();
});
// Insert some stuff
DB::table('users')->insert(
array(
'email' =&g...
Overriding superclass property with different type in Swift
...
14 Answers
14
Active
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Extending an Object in Javascript
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194
You want to 'inherit' from Person's prototype object:
var Person = function (name) {
this.n...
Custom Adapter for List View
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314
public class ListAdapter extends ArrayAdapter<Item> {
private int resourceLayout;
...
.gitignore for PhoneGap/Cordova 3.0 projects - what should I commit?
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43
The answer depends on wich platforms you're developing the phongap app, and if you're following...
My docker container has no internet
...s from daemon.json.
2. Fix the hosts's /etc/resolv.conf
A. Ubuntu 16.04 and earlier
For Ubuntu 16.04 and earlier, /etc/resolv.conf was dynamically generated by NetworkManager.
Comment out the line dns=dnsmasq (with a #) in /etc/NetworkManager/NetworkManager.conf
Restart the NetworkManager ...
wildcard ssl on sub-subdomain [closed]
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194
A wildcard SSL certificate for *.example.net will match sub.example.net but not sub.sub.example....
What's the difference between HEAD^ and HEAD~ in Git?
...e-ref failed" if $?;
# for browsing history - http://blog.kfish.org/2010/04/git-lola.html
system "git config alias.lol 'log --graph --decorate --pretty=oneline --abbrev-commit'";
system "git config alias.lola 'log --graph --decorate --pretty=oneline --abbrev-commit --all'";
It adds aliases in the...
#1071 - Specified key was too long; max key length is 1000 bytes
...d to storage or the range of values allowed for the column. INT is always 4 bytes, and it always allows values from -2147483648 to 2147483647. The numeric argument is about padding values during display, which has no effect unless you use the ZEROFILL option.
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