This tag is used mostly regarding associative arrays (but better use tag "associative-array" for that) and sometimes in the mathematic sense of tag "associativity", the associative property of binary operations.
Questions tagged [associative]
435 questions
7
votes
3 answers
What is the difference between array_udiff_assoc() and array_diff_uassoc()?
What is the difference between array_udiff_assoc() and array_diff_uassoc()?
For array_udiff_assoc(), I have this code:
function myfunction($v1,$v2)
{
if ($v1===$v2) {
return 0;
}
return 1;
}
$a1 = ["a" => "Cat", "b" => "Dog",…
php.khan
- 1,224
- 1
- 12
- 21
7
votes
1 answer
Will Objective-C runtime release retained associative references for user?
When some codes like this:
objc_setAssociatedObject (
obj,
&key,
val,
OBJC_ASSOCIATION_RETAIN
);
Do I need to call related
objc_setAssociatedObject (
obj,
&key,
nil,
OBJC_ASSOCIATION_RETAIN
);
to release the retained value? Does…
cxa
- 4,238
- 26
- 40
7
votes
3 answers
Can Perl 6 use the % sigil for something other than a Hash?
The Perl 6 docs on variables notes that the % sigil can be used with types that do the Associative role. It specifically mentions Pair, Hash, and Map. But, how would I get a Pair into a variable with the %?
If I use a type constraint I get a curious…
brian d foy
- 129,424
- 31
- 207
- 592
7
votes
1 answer
Error assigning associative array key with embedded period
I have a simple shell script in which I am trying to assign a value to an associative array where the key value has one or more "." characters in its value.
#!/bin/bash
X="my.key"
Y="my.val"
ARRAY[$X]=$Y
When I run this I get the following error…
Roger Kohler
- 83
- 3
6
votes
2 answers
How to get and use associative array from YAML to action in Symfony?
Ive got in app.yml some configration data, and I want to foreach them in action. I try do this by get them by sfConfig::get('app_datas') but it fails. Lets show them in details:
YAML:
all:
datas:
foo: bar
foo2: bar2
and in the…
quardas
- 651
- 3
- 10
- 23
6
votes
4 answers
Are JavaScript arrays associative?
For instance, if I do
a[1000000]=1;
will it use memory for 1000000 elements or just for this one?
Lem0n
- 77
- 1
6
votes
2 answers
ASP print out array
I would like to print out the data, for debugging purpose.
Data format would be like this
cntryCode = resArray("COUNTRYCODE")
business = resArray("BUSINESS") ' Payer's business name.
shipToName =…
i need help
- 2,386
- 10
- 54
- 72
5
votes
2 answers
How do I append to an alist in scheme?
Adding an element to the head of an alist (Associative list) is simple enough:
> (cons '(ding . 53) '((foo . 42) (bar . 27)))
((ding . 53) (foo . 42) (bar . 27))
Appending to the tail of an alist is a bit trickier though. After some experimenting,…
troelskn
- 115,121
- 27
- 131
- 155
5
votes
3 answers
Creating An Associative Multi Dimensional Array from loop in PHP
How can I create an array like the following in PHP from a database result set using a loop:
Array
(
[T] => Array
(
[0] => Array
(
[id] => 1
[name] => Timer
…
Billy
- 788
- 1
- 8
- 17
5
votes
4 answers
Does Perl have an associative array type that can have any type of keys?
It seems that Perl can only have strings as the keys of a hash. (Has this been changed in a certain version of Perl?) It is very limiting to only be able to use strings as the key. What if I wanted an object or an array to be the key? In Python…
user553702
- 2,819
- 5
- 23
- 27
5
votes
2 answers
How to make a JQuery associative array from a HTML unordered list
Currently in my JQuery script I have a hard coded array:
var arrayList = [
{"id":"1","category":"foo1","title":"bar1","image":"images/foobar1.gif"},
{"id":"2","category":"foo2","title":"bar2","image":"images/foobar2.gif"},
…
dbach
- 163
- 3
- 12
5
votes
0 answers
Compare guarantees for insert with hint for ordered associative containers
I want to insert new (unique) element into known place (generally somewhere in the middle) of an ordered associative container std::set/std::multiset/std::map/std::multimap using insert (w/ hint) or emplace_hint.
During insertion operation I…
Tomilov Anatoliy
- 15,657
- 10
- 64
- 169
5
votes
2 answers
How is Associative Reference implemented?
I saw a very good sample here:
Subclass UIButton to add a property
What is it? You can't add object to a category. But now with this trick you can.
So what is it? How does it work?
Objective-c object already have some constant number of ivar…
Anonymous White
- 2,149
- 3
- 20
- 27
4
votes
2 answers
PHP multidimensional array (usort)
I have an associative array like this
Array
(
["News 1"] => Array
(
[text] => tests
[language] =>
[advertiserCompetitionScale] => 5
[avgSearchVolume] => 7480000
…
Alexis
- 1,825
- 4
- 23
- 28
4
votes
6 answers
C++ associative containers - why doesn't the standard defines methods to exchange and replaces keys?
I need to replace specific key values, while the rest of the value_type is left untouched. What I actually need to do, is copy the value, erase the entry and insert it with changed key value again. This is absolutely bad. I need to copy the whole…
0xbadf00d
- 17,405
- 15
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- 107