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How to define “type disjunction” (union types)?
...4
scala> f("hello")
res1: Int = 5
scala> f(9.2)
<console>:9: error: Cannot prove that Int with String <:< Double.
f(9.2)
^
Source: Comment #27 under this excellent blog post by Miles Sabin which provides another way of encoding union types in Scala.
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Tests not running in Test Explorer
... Worked. I really with VS would, you know, give us a clear warning or error message or something.
– anon
Aug 22 '19 at 14:09
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Create an index on a huge MySQL production table without table locking
.../dev/null) 2>&1 | grep real;
done
) | cat -n &
PID=$!
sleep 0.05
echo "Index Update - START"
mysql -uroot website_development -e 'alter table users add index ddopsonfu (last_name, email, first_name, confirmation_token, current_sign_in_ip);'
echo "Index Update - FINISH"
sleep 0.05
kill $...
How does Access-Control-Allow-Origin header work?
...allowed to access this page, the browser will trigger the XMLHttpRequest's error event and deny the response data to the requesting JavaScript code.
Non-simple requests
What happens on the network level can be slightly more complex than explained above. If the request is a "non-simple" request, t...
SSH library for Java [closed]
... while (true) {
if (in.read(buf, 0, 1) < 0) {
// error
break;
}
if (buf[0] == ' ') {
break;
}
filesize = filesize * 10L + (long) (buf[0] - '0');
}
String file = null;
for (int i = 0;; i++) {
in.rea...
Named capturing groups in JavaScript regex?
... whole matched string
the || [] after .exec() will prevent a destructuring error when there are no matches (because .exec() will return null)
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Read binary file as string in Ruby
...hen done?
– Joshua
Apr 13 '12 at 18:05
2
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Branch from a previous commit using Git
...ranch.
– Tyler Long
Jan 29 '18 at 6:05
12
stackoverflow.com/a/7987711/3590629 git branch... creat...
iPhone system font
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answered Aug 22 '13 at 0:05
Dan RosenstarkDan Rosenstark
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How to increase storage for Android Emulator? (INSTALL_FAILED_INSUFFICIENT_STORAGE)
...not often) for one of my projects, couple of classes only
Installation error: INSTALL_FAILED_INSUFFICIENT_STORAGE
19 An...