Dear sirs,
I am new to DataBase in C++,Also here iam using mysql,
How can do it nad get the result back from the database and do operation onit.
Thanks in advance,
arunkumar (2 Replies)
Hi All,
I am having trouble through, I am reading the input from tab delimited file containing several records,
e.g.
line1 field1 field2 field3 so on..
line2 field1 field2 field3 so on..
..
..
on the basis of certain fields for each record in input file, I have to retrieve... (1 Reply)
hello everyone
I need to update data base in file
1-ID
2-Name
3-ID group
4-ID teacher
5-mark list
unique ID is (ID+ID group+ID teacher)
we can append 5 th columns (marks list)
main base file:
1:John:3:1:4 3 2
2:Mark:1:2:1 3
3:Susan:3:4:
input file: (6 Replies)
Hi All,
I have the file in following format. I need to change column 16 and column 17 for those lines which has atleast one numerical digit in column 2 , with the exception on SUPP1
Input file :
S00005615|1044|0|0.00|0|0.00| |112|-30|28.1|0|0| |20130331|220.2|2|3|... (2 Replies)
Base of last two column i want to change may data
if Last two Column have A and C then Copy Column $4 to Column $3.
Input :-
DD142 0_1 DD142_A DD142_B A B
DD142 1_1 DD142_B DD142_C B C
DD142 2_1 DD142_A DD142_C A C
DD142 3_1 DD142_A A
DD142 3_2 DD142_A A
DD142 4_1 DD142_B B ... (4 Replies)
HI
Want to grep data from column header and match with second file.
File A.txt
1 2 3 4 5 6
X1 A L D J Q R
X2 B M K P w T
X3 C S L P e Y
X4 R Z M A r U
FileB.txt
1
2
3
4
6
7 (3 Replies)
IO::Async::Protocol(3pm) User Contributed Perl Documentation IO::Async::Protocol(3pm)NAME
"IO::Async::Protocol" - base class for transport-based protocols
DESCRIPTION
This subclass of IO::Async:Notifier provides storage for a IO::Async::Handle object, to act as a transport for some protocol. It contains
an instance of the transport object, which it adds as a child notifier, allowing a level of independence from the actual transport being
used. For example, a stream may actually be an IO::Async::SSLStream to allow the protocol to be used over SSL.
This class is not intended to be used directly, instead, see one of the subclasses
IO::Async::Protocol::Stream - base class for stream-based protocols
EVENTS
The following events are invoked, either using subclass methods or CODE references in parameters:
on_closed
Optional. Invoked when the transport handle becomes closed.
PARAMETERS
The following named parameters may be passed to "new" or "configure":
transport => IO::Async::Handle
The "IO::Async::Handle" to delegate communications to.
on_closed => CODE
CODE reference for the "on_closed" event.
When a new "transport" object is given, it will be configured by calling the "setup_transport" method, then added as a child notifier. If a
different transport object was already configured, this will first be removed and deconfigured using the "teardown_transport".
METHODS
$transport = $protocol->transport
Returns the stored transport object
$protocol->connect( %args )
Sets up a connection to a peer, and configures the underlying "transport" for the Protocol.
Takes the following named arguments:
socktype => STRING or INT
Required. Identifies the socket type, and the type of continuation that will be used. If this value is "stream" or "SOCK_STREAM"
then "on_stream" continuation will be used; otherwise "on_socket" will be used.
on_connected => CODE
Optional. If supplied, will be invoked once the connection has been established.
$on_connected->( $protocol )
transport => IO::Async::Handle
Optional. If this is provided, it will immediately be configured as the transport (by calling "configure"), and the "on_connected"
callback will be invoked. This is provided as a convenient shortcut.
Other arguments will be passed to the underlying "IO::Async::Loop" "connect" call.
TRANSPORT DELEGATION
The following methods are delegated to the transport object
close
SUBCLASS METHODS
"IO::Async::Protocol" is a base class provided so that specific subclasses of it provide more specific behaviour. The base class provides a
number of methods that subclasses may wish to override.
If a subclass implements any of these, be sure to invoke the superclass method at some point within the code.
$protocol->setup_transport( $transport )
Called by "configure" when a new "transport" object is given, this method should perform whatever setup is required to wire the new
transport object into the protocol object; typically by setting up event handlers.
$protocol->teardown_transport( $transport )
The reverse of "setup_transport"; called by "configure" when a previously set-up transport object is about to be replaced.
AUTHOR
Paul Evans <leonerd@leonerd.org.uk>
perl v5.14.2 2012-10-24 IO::Async::Protocol(3pm)