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Understanding typedefs for function pointers in C
... a numerical algorithm written in C a while ago. So, could you share your tips and thoughts on how to write good typedefs for pointers to functions (Do's and Do not's), as to why are they useful and how to understand others' work? Thanks!
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How do iOS Push Notifications work?
...e those notifications. Each device establishes an accredited and encrypted IP connection with the service and receives notifications over this persistent connection. Providers connect with APNs through a persistent and secure channel while monitoring incoming data intended for their client applicati...
Regular Expression for alphanumeric and underscores
...-Za-z0-9_]*$
Edit:
If diacritics need to be included (such as cedilla - ç) then you would need to use the word character which does the same as the above, but includes the diacritic characters:
^\w+$
Or
^\w*$
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List of Rails Model Types
...stgreSQL, you can take advantage of these:
:hstore
:array
:cidr_address
:ip_address
:mac_address
For UI mapping (Model scaffold data type -> HTML), the next image has all the basic field types:
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How do you get a string from a MemoryStream?
If I am given a MemoryStream that I know has been populated with a String , how do I get a String back out?
11 Answers...
Is there a goto statement in Java?
I'm confused about this. Most of us have been told that there isn't any goto statement in Java.
23 Answers
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Could not load file or assembly System.Web.Http.WebHost after published to Azure web site
...some. worked like a charm in mvc5. Thanks
– David Graça
Apr 10 '14 at 13:32
2
Thank you, worked ...
Example use of “continue” statement in Python?
... well, python creators thought otherwise.
– Jean-François Fabre♦
Sep 14 '17 at 21:39
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What is the facade design pattern?
...bsystem
easier to use.
Try to understand the scenario with and without Façade:
If you want to transfer the money from accout1 to account2 then the two subsystems to be invoked are, withdraw from account1 and deposit to account2.
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How to get the instance id from within an ec2 instance?
...ce-id
If you need programatic access to the instance ID from within a script,
die() { status=$1; shift; echo "FATAL: $*"; exit $status; }
EC2_INSTANCE_ID="`wget -q -O - http://169.254.169.254/latest/meta-data/instance-id || die \"wget instance-id has failed: $?\"`"
An example of a more advanced...