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What does character set and collation mean exactly?
...ation
of all four letters and their
encodings is a character set.
Now, suppose that we want to compare
two string values, 'A' and 'B'. The
simplest way to do this is to look at
the encodings: 0 for 'A' and 1 for
'B'. Because 0 is less than 1, we say
'A' is less than 'B'. Now, what...
My pull request has been merged, what to do next?
...ontribute to'.
It is easier to:
delete your fix branch (actually, it is now deleted for you) on your fork (and in your local cloned repo: see "Delete a Git branch both locally and remotely")
git pull upstream master (if master was the branch in which your fix has been integrated: the merge will b...
How to check Google Play services version?
...
How to know the version code of play services version 10.2
– Manmohan Soni
Jun 12 '18 at 9:01
...
How to run only one task in ansible playbook?
... role/stuff/tasks/main.yml
- name: do stuff
when: stuff|default(false)
Now, this task will not fire by default, but only if I set the stuff=true
$ ansible-playbook -e '{"stuff":true}'
or in a playbook:
roles:
- {"role":"stuff", "stuff":true}
...
Usage of __slots__?
...dict__, you must subclass object:
class Base(object):
__slots__ = ()
now:
>>> b = Base()
>>> b.a = 'a'
Traceback (most recent call last):
File "<pyshell#38>", line 1, in <module>
b.a = 'a'
AttributeError: 'Base' object has no attribute 'a'
Or subclass anoth...
NHibernate vs LINQ to SQL
...o hasn't used either technology on real-world projects I wonder if anyone knows how these two complement each other and how much their functionalities overlap?
...
Mimicking sets in JavaScript?
...or somethings called ES 2015 has a built-in Set object. It is implemented now in some browsers. Since browser availability changes over time, you can look at the line for Set in this ES6 compatibility table to see the current status for browser availability.
One advantage of the built-in Set objec...
How to detect if multiple keys are pressed at once using JavaScript?
...
Note: keyCode is now deprecated.
Multiple keystroke detection is easy if you understand the concept
The way I do it is like this:
var map = {}; // You could also use an array
onkeydown = onkeyup = function(e){
e = e || event; // to deal w...
Learning Ruby on Rails
As it stands now, I'm a Java and C# developer. The more and more I look at Ruby on Rails, the more I really want to learn it.
...
What are free monads?
I've seen the term Free Monad pop up every now and then for some time, but everyone just seems to use/discuss them without giving an explanation of what they are. So: what are free monads? (I'd say I'm familiar with monads and the Haskell basics, but have only a very rough knowledge of cat...