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array_chunk
Posted on October 17th, 2009 2 commentsThe array_chunk() function in PHP splits an array into multiple smaller arrays (array chunks).
PHP
$langs = array('php', 'ruby', 'java', 'perl', 'csharp'); $my_size = 2; var_dump( array_chunk($langs, $my_size) ); /* Array ( [0] => Array ( [0] => php [1] => ruby ) [1] => Array ( [0] => java [1] => perl ) [2] => Array ( [0] => csharp ) ) ) */
Ruby
def array_chunk(full_array, size) number_of_chunks = (full_array.length/size.to_f).ceil; chunks = (1..number_of_chunks).collect { [] } while full_array.any? chunks.each do |a_chunk| a_chunk << full_array.shift if full_array.any? end end chunks end langs = ["php", "ruby", "java", "perl", "csharp"] my_size = 2 p array_chunk(langs, my_size) # => [["php", "perl"], ["ruby", "csharp"], ["java"]]
2 responses to “array_chunk”
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errrmmm what about Array#each_slice, or Array#slice ??
also, the method you implemented in ruby doesn’t have the same behaviour
>> ["php", "ruby", "java", "perl", "csharp"].each_slice(2) do |chunk| puts chunk.inspect end
["php", "ruby"]
["java", "perl"]
["csharp"]————————
>> langs.slice!(0, 2)
=> ["php", "ruby"]
>> langs.slice!(0, 2)
=> ["java", "perl"]
>> langs.slice!(0, 2)
=> ["csharp"] -
tantalum August 6th, 2010 at 08:56
please replace this implementation,
it is overcomplicated and inefficient,
and there is “each_slice”.
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