Programming :: Get List Of Variables Of Particular Type ?
Jun 13, 2011
I have a C header file which have arrays of predefined(known) structure type. But i dont have names of arrays and their size. when i include that file and compile my application, i want to know the names and sizesof those arrays.
purpose of application is to get the content of those arrays and to explain it in descriptive words instead of hex numbers.ofcourse this can be done by file pointers and reading also with out header file inclusion, but as i am working in C, once compiled, those variables are in my address space in i include header file.
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Jun 26, 2010
I'm quite new to c++ programming, so my concepts are not so increased yet...
I wanna to create a list to store my objects. I'll resume them here:
Code:
private:
And what I want to do is an event list:
Code:
Sometimes this works and sometimes I got "segmentation fault".
I think I'm doing it wrong, cause these objects have different sizes, so I don't know if I could have all of them in a single array.
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Jan 23, 2010
Ive seen some fixes for this but they all seem to be specific to the particular user's sources.list . . . ..
Code:
Here is Line 54
Code:
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Mar 12, 2010
I tried to change the basic toolbar to cairo dock,a tutorial that i found told me to write in terminal gksu gedit /etc/apt/sources.list.d/winehq.listso i write it and a window opened,i couled not find the text that told me(the tutorial i mean)so i closed the window,after that i keep taiking the same error
E: Type �sudo� is not known on line 55 in source list /etc/apt/sources.list
E: The list of sources could not be read.
Go to the repository dialogue to correct the problem.
E: _cache->open() failed, please report.
now whene i got in the winehq.list the text has gone and i take this error in update manager,my software center doesn't work and my terminal whenever i type sudo commands says
E: Type �sudo� is not known on line 55 in source list /etc/apt/sources.list
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May 4, 2011
don't know much, but when I tried to update I get this error:
E: Type 'sudo' is not known on line 52 in source list /etc/apt/sources.list E: The list of sources could not be read.
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May 9, 2010
Is there a command that can list the variables that I am using in a script? I mean the variables that I created in the script not the environment or local variables. For example if I have a script that has the following var's like : name=Alex, age=20, postal_code=12345, how can I list them all @ once WITHOUT using echo $name, $age and so on. Imagine I have a lot of variables and i can't echo them all.
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Mar 14, 2011
I am trying to rename a list of variables in my script using a second list of variables. I want the variables in the second list to replace the variables in the first list such that the first variable in List 1 is renamed after the first variable in List 2, the second variable in List 1 is renamed after the second variable in List 2, the third variable in List 1 is renamed after the third variable in List 2, and so on.
For example:
I know how to rename each file individually, but would like to run Do Loop which can rename all my output files at once.
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Mar 17, 2011
I'm trying to do substitutions to a file based on passed variables.
For example, I have a file called test.txt that has 5 lines:
What I want to do is to go through that file, line by line and check for the presence of a passed variable in that line. If I have a match, then substitute and print, otherwise print line as is. My problem arises in that the number of variables is well, variable.
The code I started with was the following:
Code:
What I was hoping for was test.out to look like this:
What I get is a much longer file like this:
This makes sense after thinking about it but is there anyway to get an output like the first case?
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Jan 26, 2010
I'm trying to compile a program and it gives me the following:
I checked cmath-util.h:46 and cmath-util.h:48:
I'm not a C person, and the author is unavailable so far.
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Jun 22, 2010
How do I (in the command line) list all the .txt (or any common attribute) files in a directory?
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Apr 27, 2010
I can define all variables in tcl programming in a file for instance var.cfgand source the same file in my tcl script such assource var.cfgIs this possible in perl too?
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Sep 17, 2010
When I try to use Synaptic package manager I get the following message: E: Type'2' is not known on line1 in source.list E: the list of sources could not be read.to the repositary dialog to correct the problem.E:_cache-> open() failed, report.I cannot use Synaptic package manager or Update manager while this problem exists.
Dell inspiron 6400
ram: 2gb
hdd: 250gb
os: ubuntu 10.04
Tony044
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Jun 30, 2011
I want a list of all my mp3 files (or any other kind of file, actually) telling me HOW MANY OF THEM I have in my computer.I tried with both find and locate commands in terminal, but they don't tell me how many files I have.
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Feb 2, 2010
How would I list 4 users ID numbered 10, 11, 12 and 13 from my users list and output them to a file busers where their names are numbered by ascending order? How would I accomplish that on a one line command?
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Feb 10, 2009
I am trying to get this script to work. The purpose is to download a list of modules from the slax.org the list consist of a list of module numbers. What I am trying to do is Download the file or the file name corresponding to the number in the list.the list is comma delimited. this is what I have done so far and I am a stand still.
#!/bin/sh
# Wget script to retrieve modules from slax.org modules
#
# ----Begin of user defined values -----
# Path to wget
[code].....
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Mar 4, 2011
I am trying to generic way to convert the string datatype to other primitive data type. To achieve, i used Template . But i getting error and couldn't resolve the issue and error reported is also clueless.
Code
====
#include <vector>
#include <iostream>
#include <string>
[Code].....
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Jul 12, 2010
I'm running into a problem when I try to set a variable to an awk output in c-shell. Right now my command is Code: set STR_MSG_TYPE = `awk -F{ '/msg_type/ {print $2}' <filename> | tr -d }'/''*' ` I then run echo to see what the output is and it returns blank, however, when I run the same awk command from the command line, I get an actual output of "MT-715". Am I setting my variable incorrectly? I do something similar using the date command to set a STR_DATE variable earlier in the code and it works fine and I use the same syntax.
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Sep 13, 2010
i'm practicing in very basic c programs using the gcc compiler.I found that when i create two variables let's say
Code:
int a,b and Code: a=15;
b=3;
a=b;
b--;
then a equals 2.I thought that this isn't normal in C isn't it?I haven't had the time to read the gcc documentation yet...so i think it has something to do with my compiler's default settings.I use the
Code: gcc filename.c -o filename command to compile
Are all variables defined like pointers?
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Apr 26, 2010
I want to check if a MySQL db query will return an empty result - I first do this:
$query="SELECT * from <whatever" ;
$result=mysql_query($query) ;
$row=mysql_fetch_row($result) ;
Now how do I check if $row is empty or not? Will $row="" do the trick?
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Mar 19, 2010
I was trying to make a code for passing variables by reference..here's the code:
#include<iostream>
using namespace std;
void fun(int& ,int& );
int main(){
[Code].....
invalid initialization of non-const reference of type 'int&' from a temporary of type 'int*'
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Mar 30, 2011
I am pretty new to PHP so excuse my dumbness. I've searched this up in quite a few places and cant find anything : Basically, I've made an array, within it are 3 more arrays. Their are two values in each array, 'Name' and 'Age'. Basically I am using a While statement to try and cycle through the 'age' value of my array and state whether or not the person is eligible. (I am actually just learning so I'm doing this to just test myself).
Here is my code
Code:
<?php
$people =array(
array('name' => 'Bob', 'age' => 15 ),
array('name' => 'Jhon' , 'age' => 10),
array('name' => 'Sue' , 'age' => 7));
//($value =& $people[0,1,2][age] );
Here was an attempt to try and create a reference to age, I tried it many different ways
while($age < 10) {
echo ('$name, is eligible') ; } ?>
Okay, so I tried to do this through two ways, one way I tried to create a reference to age, then evaluate it, without that line of code their would be no reference, which way is correct, why wont it work? I am using Xammp, so when I launch local host I get an undefined variable error. What To Do?
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Apr 17, 2011
My php knowledge is very poor (only worked with strings so far), and I am faced which a task that is a real challenge for me: I have a variable, that contains data of different type, in this order: byte, byte, string, string, string, string, short, byte, byte, byte, byte, byte, byte, byte, string.
Strings are of variable length. How could this data be parsed into variables of the right type, and then all converted to strings? What are the functions to use? Strings are unicode ones, and they are delimited by "
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Jan 10, 2010
I just created a website in PHP and tested on my own webserver. All of my session variables worked great. Today I uploaded it to my commercial server host and it does not remember the session vars from one page to the next. Here is the session section of phpinfo().
Code:
session
Session Support enabled
Registered save handlers files user sqlite
Registered serializer handlers php php_binary wddx
DirectiveLocal ValueMaster Value
session.auto_startOffOff
session.bug_compat_42OnOn
session.bug_compat_warnOnOn
session.cache_expire180180
session.cache_limiternocachenocache
session.cookie_domainno valueno value
session.cookie_httponlyOffOff
session.cookie_lifetime00
session.cookie_path//
session.cookie_secureOffOff
session.entropy_fileno valueno value
session.entropy_length00
session.gc_divisor100100
session.gc_maxlifetime14401440
session.gc_probability11
session.hash_bits_per_character44
session.hash_function00
session.namePHPSESSIDPHPSESSID
session.referer_checkno valueno value
session.save_handlerfilesfiles
session.save_path/tmp/tmp
session.serialize_handlerphpphp
session.use_cookiesOnOn
session.use_only_cookiesOffOff
session.use_trans_sid00
You can see that session.save_path is set to /tmp, which is the default on the shared server. /tmp does exist in my document root directory.
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Jan 13, 2010
Im a fresher in PHP.Actually i wanted to know that whether there will be time delay while using session variables in PHP.By using some 10-20 session variables in my code will it affect the speed of the loading of the page.If so then can u suuggest any other method to pass the varaibles which will not slow down the speed?
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Jun 7, 2011
I have sles 10 . A user has a default shell of tcsh. I want to run a script which has to use ksh . In that script only some variables are exported, which will be used in subsequent scripts which are called inside it.
But the variables are not exported. I am unable to find whether its a conflict of shell or what ?? I tried with debug mode, it only displays the command but not execute anyone ..
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May 18, 2011
I have a file that contains 5 fields and anothen one with two I want to take the value from user and search file1 and if the value exists then write in file2 to the $2 to the line that $1=value
file 1
1:fsdfsd:g:33:fsdf
2:yytgdcf:a:3:sgd
[code]....
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Mar 22, 2011
i have following code :
Code:
TMPDIR=`mktemp -d`
mkdir $TMPDIR/old/
[code]...
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Feb 26, 2009
What's the best way to include variables in a string using C,i.e if i want to do the following query in C, how would i do that.How do i build the string variable up in C?
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Jun 19, 2010
Trying to mounts three cifs shares at boot up. I want to mount the shares under three different sub directories in the user's home directory:
share 1 mounted to /home/(insert username here)/movies
share 2 mounted to /home/(insert username here)/music
share 3 mounted to home/(insert username here)/software
I would like to use the environment variable HOME to dynamically build the mount point parameter. I've tried:
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Nov 22, 2010
I'm writing something which takes user input (which may or may not contain spaces...) and then runs a command on a remote system via ssh. However the remote command does not work. I can't print the exact code so I'll just provide an equivelenat problem. This needs to work with filenames which do and do not contain spaces.
Code:
FILES=`ls`
echo "Specify a file"
echo "$FILES"
echo -n "File name: "
read $FILES
ssh root@127.0.0.1 "ls $FILES"
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