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Differences between socket.io and websockets
...of WebSockets as you described in #2, and probably more importantly it provides fail-overs to other protocols in the event that WebSockets are not supported on the browser or server. I would avoid using WebSockets directly unless you are very familiar with what environments they don't work and you a...
How to convert NSNumber to NSString
... but you should take the NSNumber which is inside the array and then call StringValue method, something like NSString *myString= [[myArray objectAtIndex:i] stringValue]; but you have to be sure that you have an NSNumber at that index
– JonLOo
Oct 19 '10 a...
Automatic post-registration user authentication
...gistration flow: after the user creates an account, they should be automatically logged in with those credentials, instead of being immediately forced to provide their credentials again.
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Options for HTML scraping? [closed]
... is a lot more pythonic. If you want to try Ruby they ported BeautifulSoup calling it RubyfulSoup but it hasn't been updated in a while.
Other useful tools are HTMLParser or sgmllib.SGMLParser which are part of the standard Python library. These work by calling methods every time you enter/exit a t...
Creating a new dictionary in Python
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Call dict with no parameters
new_dict = dict()
or simply write
new_dict = {}
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Macro vs Function in C
... Same
No side Effect
Speed of Execution is Slower
During function call, Transfer of Control takes place
Useful where large code appears many time
Function Checks Compile Errors
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What is the difference between “text” and new String(“text”)?
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JLS
The concept is called "interning" by the JLS.
Relevant passage from JLS 7 3.10.5:
Moreover, a string literal always refers to the same instance of class String. This is because string literals - or, more generally, strings that are th...
When do you use the “this” keyword? [closed]
...self to another type, for example an explicitly implemented method will be called like ((ICollection<T>)this).Add(bla).
– nawfal
Nov 13 '13 at 18:02
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What is SOA “in plain english”? [closed]
...n such a way that they can be combined in different useful ways (sometimes called a "family" or "product line").
These are all bedrock software-development principles, many of them first articulated by David Parnas.
What's new in SOA is
You're doing it on a network.
Modules are communicating by...
What are the differences between SML and OCaml? [closed]
...e probably objects and polymorphic variants.
The two languages have dramatically different models of record types. Briefly, in Caml, names of record fields must be unique, where in SML, two different record types in the same scope may have field names in common. This quirk can make porting from SM...