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Ruby: How to turn a hash into HTTP parameters?
...y string (I seemed to recall it overwriting the previous 'b' values). Started GET "/?a=a&b%5B%5D=c&b%5B%5D=d&b%5B%5D=e" for 127.0.0.1 at 2011-03-10 11:19:40 -0600 Processing by SitesController#index as HTML Parameters: {"a"=>"a", "b"=>["c", "d", "e"]}
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XmlSerializer giving FileNotFoundException at constructor
...zer for the same type will just use the already generated DLL.
UPDATE: Starting from .NET 4.5, XmlSerializer no longer performs code generation nor does it perform compilation with the C# compiler in order to create a serializer assembly at runtime, unless explicitly forced to by setting a confi...
How to bundle a native library and a JNI library inside a JAR?
...to the "old" way with System.loadLibrary() in case it failed. I think I'll start using that. Thanks! :)
– Matthieu
Jun 8 '13 at 19:55
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Access denied for user 'root'@'localhost' while attempting to grant privileges. How do I grant privi
...rc Alff - thanks!)
I could have done an mysql_upgrade, but as I wanted to start from scratch I did:
# su - mysql
$ rm -rf /var/lib/mysql/*
$ mysql_install_db
# /etc/init.d/mysql start
Then set root password (/usr/bin/mysqladmin -u root password), and all worked as expected with the GRANT command...
Apache Prefork vs Worker MPM
...to how Apache handles multiple requests. Preforking, which is the default, starts a number of Apache processes (2 by default here, though I believe one can configure this through httpd.conf). Worker MPM will start a new thread per request, which I would guess, is more memory efficient. Historically,...
How to run Django's test database only in memory?
...l
$ vim /etc/mysql/my.cnf
# datadir = /dev/shm/mysql
$ sudo service mysql start
Beware, it's just for testing, after reboot your database from memory is lost!
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How to split a string, but also keep the delimiters?
... while (m.find()) {
splitted.add(text.substring(last_match,m.start()));
if (this.keep_delimiters) {
splitted.add(m.group());
}
last_match = m.end();
}
splitted.add(text.substring(last_match));
return splitt...
How to align texts inside of an input?
For all default inputs, the text you fill starts on the left. How do you make it start on the right?
7 Answers
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Dynamic constant assignment
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In Ruby, any variable whose name starts with a capital letter is a constant and you can only assign to it once. Choose one of these alternatives:
class MyClass
MYCONSTANT = "blah"
def mymethod
MYCONSTANT
end
end
class MyClass
def mymethod
...
What is the difference between instanceof and Class.isAssignableFrom(…)?
...; i < 100; ++i)
execute();
// Time it
int count = 100000;
final long start = System.nanoTime();
for(int i=0; i<count; i++){
execute();
}
final long elapsed = System.nanoTime() - start;
Thanks to the JIT, the code is optimized at some point and we get:
instanceof: 6ms
isInstance: 12m...