Sponsored Content
Top Forums Programming Parameter passing to function with void * as Argument Post 302903258 by alister on Monday 26th of May 2014 12:22:49 PM
Old 05-26-2014
Quote:
Originally Posted by Corona688
Bad advice! Very dangerous! Unions do not work that way!

If you don't add the 'type' value to the structures, then it won't work properly in the union! It will refer to some other member.
I'm assuming that you misunderstood what I meant by 'tagged union'. It's the final data structure in my previous post, following the text which you quoted. In C, a tagged union is not a union; it is a struct containing a tag (or type) and a union.

Regards,
Alister
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Passing Argument to Function

May i know how to pass an argument to a function in a shell script? Sorry, i din stated that it is in a shell script in my previous post. Means: checkStatus() { ........... } read status; I wanna use the status in the function checkstatus, how... (2 Replies)
Discussion started by: AkumaTay
2 Replies

2. Shell Programming and Scripting

Passing a string parameter to a function

I need to pass a parameter to a function in a script. My parameter is a string. When I display the parameter within my function, I only get the first word from string I pass in. How can I make the function receive the whole string (and not terminate at the first space it encounters)?. part of... (1 Reply)
Discussion started by: fastgoon
1 Replies

3. UNIX for Advanced & Expert Users

Parameter passing in a function

I need to pass a parameter to a function in a script. My parameter is a string. When I display the parameter within my function, I only get the first word from string I pass in. How can I make the function receive the whole string (and not terminate at the first space it encounters)?. part of... (2 Replies)
Discussion started by: fastgoon
2 Replies

4. Programming

How to return void function pointer

Hello all im trying to build function that will return void function pointer what is mean is ( not working ) the main function void * myClass::getFunction(int type){ if(type==1) return &myClass::Test1; if(type==2) return &myClass::Test2; } void myClass::Test1(){... (1 Reply)
Discussion started by: umen
1 Replies

5. Shell Programming and Scripting

Passing more than one argument in a function

Hi All, Calling a function with one argument and storing the return value in a shell script is as below:( so far I know) value="`fun_1 "argument1"`" Its working perfectly for me. Can u help me with passing more than one argument and storing the return value Thnaks in advance JS (1 Reply)
Discussion started by: jisha
1 Replies

6. Shell Programming and Scripting

Passing commandline argument to a function

Hi, I have 2 ksh scripts. Script1.ksh contains function definition. script1.ksh function f1() { while getopts a:c: args do case $args in a) ARG1=$OPTARG ;; c) ARG2=$OPTARG ;; \?) echo "Error no valid Arguments passed" esac done echo $ARG1 echo $ARG2 script2.sh (2 Replies)
Discussion started by: siba.s.nayak
2 Replies

7. Shell Programming and Scripting

Passing sql as parameter to unix function

Hi, I have a function which connects to the db and runs the sql. it works fine when I run it like: function "select empname from emp;" but when I try to pass the sql string to a variable which in turn in fed to the function , it throws error. please advise. Thanks, Arnie. (1 Reply)
Discussion started by: itsarnie
1 Replies

8. Shell Programming and Scripting

passing argument from one function to another

Hi all, In the given script code . I want to pass the maximum value that variable "i" will have in function DivideJobs () to variable $max of function SubmitCondorJob(). Any help? Thanks #!/bin/bash ... (55 Replies)
Discussion started by: nrjrasaxena
55 Replies

9. Shell Programming and Scripting

Passing parameter to script, and split the parameter

i am passing input parameter 'one_two' to the script , the script output should display the result as below one_1two one_2two one_3two if then echo " Usage : <$0> <DATABASE> " exit 0 else for DB in 1 2 3 do DBname=`$DATABASE | awk -F "_" '{print $1_${DB}_$2}` done fi (5 Replies)
Discussion started by: only4satish
5 Replies

10. Shell Programming and Scripting

Passing command as a function parameter

Hi All, Just trying to implement the below shell script using AIX ksh shell. myfunc { eval "$*" } CMD='ls -la /etc/hosts | awk '{print $9"|"$5}'' myfunc $CMD Keeping getting "|}: not found" errors, any pointers would greatly be appreciated. Kind Regards Ed Please... (2 Replies)
Discussion started by: eo29
2 Replies
Graph::UnionFind(3pm)					User Contributed Perl Documentation				     Graph::UnionFind(3pm)

NAME
Graph::UnionFind - union-find data structures SYNOPSIS
use Graph::UnionFind; my $uf = Graph::UnionFind->new; # Add the vertices to the data structure. $uf->add($u); $uf->add($v); # Join the partitions of the vertices. $uf->union( $u, $v ); # Find the partitions the vertices belong to # in the union-find data structure. If they # are equal, they are in the same partition. # If the vertex has not been seen, # undef is returned. my $pu = $uf->find( $u ); my $pv = $uf->find( $v ); $uf->same($u, $v) # Equal to $pu eq $pv. # Has the union-find seen this vertex? $uf->has( $v ) DESCRIPTION
Union-find is a special data structure that can be used to track the partitioning of a set into subsets (a problem known also as disjoint sets). Graph::UnionFind() is used for Graph::connected_components(), Graph::connected_component(), and Graph::same_connected_components() if you specify a true "union_find" parameter when you create an undirected graph. Note that union-find is one way: you cannot (easily) 'ununion' vertices once you have 'unioned' them. This means that if you delete edges from a "union_find" graph, you will get wrong results from the Graph::connected_components(), Graph::connected_component(), and Graph::same_connected_components(). API add $uf->add($v) Add the vertex v to the union-find. union $uf->union($u, $v) Add the edge u-v to the union-find. Also implicitly adds the vertices. has $uf->has($v) Return true if the vertex v has been added to the union-find, false otherwise. find $uf->find($v) Return the union-find partition the vertex v belongs to, or "undef" if it has not been added. new $uf = Graph::UnionFind->new() The constructor. same $uf->same($u, $v) Return true of the vertices belong to the same union-find partition the vertex v belongs to, false otherwise. AUTHOR AND COPYRIGHT
Jarkko Hietaniemi jhi@iki.fi LICENSE
This module is licensed under the same terms as Perl itself. perl v5.10.0 2008-11-27 Graph::UnionFind(3pm)
All times are GMT -4. The time now is 05:32 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy