associative-array

问题 I'm creating associative arrays to process in a for loop but i'm getting some strange results in index order. Please take a look at this example script: #!/bin/bash declare -A test1=( [d]=1w45 [e]=2dfg [m]=3df [o]=4df ) declare -A test2=( [d1]=1w45 [e2]=2dfg [m3]=3df [o4]=4df ) declare -A test3=( [1d]=1w45 [2e]=2dfg [3m]=3df [4o]=4df ) echo ${!test1[@]} echo ${!test2[@]} echo ${!test3[@]} The output will be $ ./test d e m o o4 m3 e2 d1 3m 4o 1d 2e Why is the order of items changing? And how

问题 I have two associative array having one value in common, like ARRAY 1( [0]=> array(2) { ["ID"]=> "AAAA" ["Name"]=> "Apple" } [1]=> array(2) { ["ID"]=> "BBBB" ["Name"]=> "Avocado" } [3]=> array(2) { ["ID"]=> "CCCC" ["Name"]=> "Banana" } ) Array2 ( [0]=> array(4) { ["ID"]=> "AAAA" ["Taste"]=> "Yumi" ["Location"]=> "France" ["Price"]=> "Cheap" } [1]=> array(4) { ["ID"]=> "CCCC" ["Taste"]=> "Yumi" ["Location"]=> "Africa" ["Price"]=> "Cheap" } [3]=> array(4) { ["ID"]=> "BBBB" ["Taste"]=> "Yumi" [

问题 I have two associative array having one value in common, like ARRAY 1( [0]=> array(2) { ["ID"]=> "AAAA" ["Name"]=> "Apple" } [1]=> array(2) { ["ID"]=> "BBBB" ["Name"]=> "Avocado" } [3]=> array(2) { ["ID"]=> "CCCC" ["Name"]=> "Banana" } ) Array2 ( [0]=> array(4) { ["ID"]=> "AAAA" ["Taste"]=> "Yumi" ["Location"]=> "France" ["Price"]=> "Cheap" } [1]=> array(4) { ["ID"]=> "CCCC" ["Taste"]=> "Yumi" ["Location"]=> "Africa" ["Price"]=> "Cheap" } [3]=> array(4) { ["ID"]=> "BBBB" ["Taste"]=> "Yumi" [

问题 I need a library which can take command line options of the form java -jar --aaa=a --bbb=b ---ccc=c and return an array whose values can be accessed as argsArray['aaa'], argsArray['bbb'] etc. Is there some library with examples to do this? 回答1: A great parser for command line options in Java is the Apache Commons CLI. Options can have arguments or not, can be optional or required, and you can set up descriptions for each for usage help. A brief example usage: public static void main(String[]

问题 I need a library which can take command line options of the form java -jar --aaa=a --bbb=b ---ccc=c and return an array whose values can be accessed as argsArray['aaa'], argsArray['bbb'] etc. Is there some library with examples to do this? 回答1: A great parser for command line options in Java is the Apache Commons CLI. Options can have arguments or not, can be optional or required, and you can set up descriptions for each for usage help. A brief example usage: public static void main(String[]

问题 There are two links http://docs.oracle.com/cd/E11882_01/appdev.112/e25519/composites.htm#LNPLS99981 and Purpose of using different types of PL/SQL collections in Oracle by referring above two links i have two doubt 1.Which one is correct nested table? 2.If the oracle doc is correct what is the difference between nested table and associative array? 回答1: Here is another difference which is not that commonly known. You can compare two nested tables with = or <> but associative array you cannot.

问题 what is the php function to randomize the associative array while keeping key/values pairs. I don't mean to just randomly pick out a key value pair, but actually changing the array (similar to the uasort function, but not in order). TIA example: original array ( [a] => 4 [b] => 8 [c] => -1 [d] => -9 [e] => 2 [f] => 5 [g] => 3 [h] => -4 ) random ordered array ( [d] => -9 [a] => 4 [b] => 8 [c] => -1 [h] => -4 [e] => 2 [g] => 3 [h] => -4 [f] => 5 ) Edit Comparison between 2 solutions. $start =

问题 Ok, so on a web page, I've got a JavaScript object which I'm using as an associative array. This exists statically in a script block when the page loads: var salesWeeks = { "200911" : ["11 / 2009", "Fiscal 2009"], "200910" : ["10 / 2009", "Fiscal 2009"], "200909" : ["09 / 2009", "Fiscal 2009"], "200908" : ["08 / 2009", "Fiscal 2009"], "200907" : ["07 / 2009", "Fiscal 2009"], "200906" : ["06 / 2009", "Fiscal 2009"], "200905" : ["05 / 2009", "Fiscal 2009"], "200904" : ["04 / 2009", "Fiscal 2009

问题 I have a cart session stored in $_SESSION['cart'] that store the book's data (book_name, book_image, book_price, etc) if the user click 'buy'. I want to display the book_name only using this code : foreach ($_SESSION['cart'] as $key => $value) { echo implode(', ', $key); } but it return into invalid arguments passed . I know that $key variable store the book name, and the $key variable store how much the book's amount. What i want is display the items into one string like this book1, book2,

问题 I have a cart session stored in $_SESSION['cart'] that store the book's data (book_name, book_image, book_price, etc) if the user click 'buy'. I want to display the book_name only using this code : foreach ($_SESSION['cart'] as $key => $value) { echo implode(', ', $key); } but it return into invalid arguments passed . I know that $key variable store the book name, and the $key variable store how much the book's amount. What i want is display the items into one string like this book1, book2,