Hello;
When I wrote a function to print out an array,
I could only print out the first two elements,( sometimes 8 out of 10 elements). What did I miss?
The problem seems to be the part
My understanding is (copied from stackoverflow): sizeof returns the size in memory of the passed element. By dividing the size of an array by a single element size, you get the elements count. On the other hand, when counting elements in an array: sizeof(a) / sizeof(a[0]) will still work as well. But my code does not! I saw this type online quite lot, but mine just does not work (Ubuntu 12.10, 64_bits kernel). Could anyone explain what is wrong with my code? Thanks a lot!
Hi all,
I am trying to create a function that return an array of integer based on the char parameter pass into the function. I.e.
func_a(char * str)
{
example str is equal to "1,2,3,4"
return an array of integers of 1,2,3,4
}
Please advise
regards
dwgi32 (2 Replies)
Hello. I'm working on a project that involves creating public/private keys server-side using openssl and using the public key in a Javascript application to encrypt sensitive data in form fields before transmission to the server. Using an SSL https server connection was not an option in this... (1 Reply)
I need to implement the following logic and need some expert help from UNIX community.
These are the steps in my Shell script.
1. Analyze a file.
2. Extract all the ID's in that file.
3. Use the ID's from #2 to run another filter on the file.
I've implemented # 1 and 2 using... (3 Replies)
Hi !
I'm looking for a way to transform certain floating point numbers in a one-line, variable length file to integers.
I can do this in a crude way with sed :
sed -e 's/0\.\(\):/\1:/g' -e 's/0\.0\(\):/\1:/g' -e 's/1\.000:/100:/g' myfile ... but this doesn't handle the rounding correctly.
... (3 Replies)
As Brendan O'Conner writes in this blog, mawk is near 8 times faster than gawk, so I am going to give mawk a go, but I got errors when trying to print the length of an array in mawk using length() function, is it not supported in mawk? or there's another way to get the length of an array in mawk?
... (3 Replies)
I would be grateful if someone could help me. I am trying to write a .sh script in UNIX.
I have the following code;
User=john
User=james
User=ian
User=martin
for x in ${User}
do
print ${#x}
done
This produces the following output;
4
5
3
6 (12 Replies)
Hello All,
I have this script that does stuff like "starting, stopping & restarting" a Daemon Process running on my machine...
My main question is why in part of my code (which you will see below) does the Array Length (i.e. ${#PIDS} )
return "1" when I know the Array is empty..?
Here is... (17 Replies)
Does anyone know how to find length of multi dimension array
of following type
A Afor simple array I is to do
for (i in A)n++ to find length of array but if it is multi dimension how to find the length ? (2 Replies)
Hi there,
I'm listing files and sorting them. When I try to get length of array variable in which these files are stored I get 1 as value. That's weird.
files_info="$(find $input_dir -name "*_CHR$i.info" | sort )"
printf ${#files_info}"\n" #print length
#--loop through... (6 Replies)
Discussion started by: genome
6 Replies
LEARN ABOUT PHP
current
CURRENT(3) 1 CURRENT(3)current - Return the current element in an arraySYNOPSIS
mixed current (array &$array)
DESCRIPTION
Every array has an internal pointer to its "current" element, which is initialized to the first element inserted into the array.
PARAMETERS
o $array
- The array.
RETURN VALUES
The current(3) function simply returns the value of the array element that's currently being pointed to by the internal pointer. It does
not move the pointer in any way. If the internal pointer points beyond the end of the elements list or the array is empty, current(3)
returns FALSE.
Warning
This function may return Boolean FALSE, but may also return a non-Boolean value which evaluates to FALSE. Please read the section on
Booleans for more information. Use the === operator for testing the return value of this function.
EXAMPLES
Example #1
Example use of current(3) and friends
<?php
$transport = array('foot', 'bike', 'car', 'plane');
$mode = current($transport); // $mode = 'foot';
$mode = next($transport); // $mode = 'bike';
$mode = current($transport); // $mode = 'bike';
$mode = prev($transport); // $mode = 'foot';
$mode = end($transport); // $mode = 'plane';
$mode = current($transport); // $mode = 'plane';
$arr = array();
var_dump(current($arr)); // bool(false)
$arr = array(array());
var_dump(current($arr)); // array(0) { }
?>
NOTES
Note
You won't be able to distinguish the end of an array from a boolean FALSE element. To properly traverse an array which may contain
FALSE elements, see the each(3) function.
SEE ALSO end(3), key(3), each(3), prev(3), reset(3), next(3).
PHP Documentation Group CURRENT(3)