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How do Python functions handle the types of the parameters that you pass in?
...object has a type, every object knows its type, it's impossible to accidentally or deliberately use an object of a type "as if" it was an object of a different type, and all elementary operations on the object are delegated to its type.
This has nothing to do with names. A name in Python doesn't "...
How to drop SQL default constraint without knowing its name?
...llowing script will generate the command to drop the constraint and dynamically execute it.
declare @schema_name nvarchar(256)
declare @table_name nvarchar(256)
declare @col_name nvarchar(256)
declare @Command nvarchar(1000)
set @schema_name = N'MySchema'
set @table_name = N'Department'
set @col_...
What is SaaS, PaaS and IaaS? With examples
...ike virtual-machine disk image library, block and file-based storage, firewalls, load balancers, IP addresses, virtual local area networks etc.
Examples: Amazon EC2, Windows Azure, Rackspace, Google Compute Engine.
PaaS (Platform as a Service), as the name suggests, provides you computing platform...
Converting file size in bytes to human-readable string
...he other hand, hard disk manufacturers like to use decimal, so they would call it ~1.6GB.
And just to be confusing, floppy disks use a mixture of the two systems - their 1MB is actually 1024000 bytes.
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Sharing a URL with a query string on Twitter
...epending on the URL). Tweetdeck doesn't seem to handle twitter.com URLs at all.
– Pierre-Luc Paour
Oct 1 '12 at 14:47
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`date` command on OS X doesn't have ISO 8601 `-I` option?
....
– Jeffrey Hulten
May 10 '17 at 21:32
5
@JeffreyHulten: "they both mean UTC" - Nitpick, but Z is...
What is the 'instanceof' operator used for in Java?
... Dog is Dog
dog instanceof Object // true - Object is the parent type of all objects
However, with Object animal = new Animal();,
animal instanceof Dog // false
because Animal is a supertype of Dog and possibly less "refined".
And,
dog instanceof Cat // does not even compile!
This is beca...
Difference between wait() and sleep()
...
A wait can be "woken up" by another thread calling notify on the monitor which is being waited on whereas a sleep cannot. Also a wait (and notify) must happen in a block synchronized on the monitor object whereas sleep does not:
Object mon = ...;
synchronized (mon) {
...
Many-to-many relationship with the same model in rails?
...
For reference: the Rails documentation on the subject. There's a section called “Many-to-many”, and of course the documentation on the class methods themselves.
Simplest scenario, uni-directional, no additional fields
This is the most compact in code.
I'll start out with this basic schema fo...
Using a piano keyboard as a computer keyboard [closed]
I have RSI problems and have tried 30 different computer keyboards which all caused me pain. Playing piano does not cause me pain. I have played piano for around 20 years without any pain issues. I would like to know if there is a way to capture MIDI from a MIDI keyboard and output keyboard stroke...