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- `concatenate` (*given a series of lists, combine all items in all lists into one flattened list*); - `filter` (*given a predicate and a list, return the list of all items for which `predicate(item)` is True*); - `length` (*given a list, return the total number of items within it*); ","num_views":0,"num_stars":0,"num_comments":0,"representation_num_published_solutions":1,"num_iterations":1,"num_loc":92,"iteration_status":"no_automated_feedback","published_iteration_head_tests_status":"passed","published_at":"2024-02-27T14:05:42.000Z","is_out_of_date":false,"language":"powershell","author":{"handle":"brehberg"},"exercise":{"title":"Операції з масивом","icon_url":"https://assets.exercism.org/exercises/list-ops.svg"},"track":{"title":"PowerShell","icon_url":"https://assets.exercism.org/tracks/powershell.svg","highlightjs_language":"powershell"},"links":{"public_url":"https://exercism.org/uk/tracks/powershell/exercises/list-ops/solutions/brehberg","private_iterations_url":"https://exercism.org/uk/tracks/powershell/exercises/list-ops/iterations"}},{"uuid":"56bc0234b810463088f506a54a895fc6","snippet":"Function Invoke-Append() { [CmdletBinding()] Param( [object[]]$List1, [object[]]$List2 ) $Result = @() $List1 | ForEach-Object { $Result += , $_ } $List2 | ForEach-Object { $Result += , $_ } $Result ","num_views":0,"num_stars":0,"num_comments":0,"representation_num_published_solutions":1,"num_iterations":1,"num_loc":93,"iteration_status":"no_automated_feedback","published_iteration_head_tests_status":"passed","published_at":"2026-04-09T14:23:18.000Z","is_out_of_date":false,"language":"powershell","author":{"handle":"gibbonsc"},"exercise":{"title":"Операції з масивом","icon_url":"https://assets.exercism.org/exercises/list-ops.svg"},"track":{"title":"PowerShell","icon_url":"https://assets.exercism.org/tracks/powershell.svg","highlightjs_language":"powershell"},"links":{"public_url":"https://exercism.org/uk/tracks/powershell/exercises/list-ops/solutions/gibbonsc","private_iterations_url":"https://exercism.org/uk/tracks/powershell/exercises/list-ops/iterations"}},{"uuid":"a384006a36f04dc1bf56fcb5ba96ee67","snippet":"<# .SYNOPSIS Implement basic list operations. .DESCRIPTION Implement a series of basic list operations, without using existing functions: - `append` (*given two lists, add all items in the second list to the end of the first list*); - `concatenate` (*given a series of lists, combine all items in all lists into one flattened list*); - `filter` (*given a predicate and a list, return the list of all items for which `predicate(item)` is True*); - `length` (*given a list, return the total number of items within it*); ","num_views":0,"num_stars":0,"num_comments":0,"representation_num_published_solutions":1,"num_iterations":1,"num_loc":94,"iteration_status":"analyzing","published_iteration_head_tests_status":"passed","published_at":"2025-01-13T21:16:53.000Z","is_out_of_date":false,"language":"powershell","author":{"handle":"ffattizzi"},"exercise":{"title":"Операції з масивом","icon_url":"https://assets.exercism.org/exercises/list-ops.svg"},"track":{"title":"PowerShell","icon_url":"https://assets.exercism.org/tracks/powershell.svg","highlightjs_language":"powershell"},"links":{"public_url":"https://exercism.org/uk/tracks/powershell/exercises/list-ops/solutions/ffattizzi","private_iterations_url":"https://exercism.org/uk/tracks/powershell/exercises/list-ops/iterations"}},{"uuid":"3f0fe13362444276bc74051140306522","snippet":"<# .SYNOPSIS Implement basic list operations. .DESCRIPTION Implement a series of basic list operations, without using existing functions: - `append` (*given two lists, add all items in the second list to the end of the first list*); 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- `concatenate` (*given a series of lists, combine all items in all lists into one flattened list*); - `filter` (*given a predicate and a list, return the list of all items for which `predicate(item)` is True*); - `length` (*given a list, return the total number of items within it*); ","num_views":0,"num_stars":0,"num_comments":0,"representation_num_published_solutions":1,"num_iterations":1,"num_loc":100,"iteration_status":"analyzing","published_iteration_head_tests_status":"passed","published_at":"2025-11-23T19:45:48.000Z","is_out_of_date":false,"language":"powershell","author":{"handle":"GeorgeDev012"},"exercise":{"title":"Операції з масивом","icon_url":"https://assets.exercism.org/exercises/list-ops.svg"},"track":{"title":"PowerShell","icon_url":"https://assets.exercism.org/tracks/powershell.svg","highlightjs_language":"powershell"},"links":{"public_url":"https://exercism.org/uk/tracks/powershell/exercises/list-ops/solutions/GeorgeDev012","private_iterations_url":"https://exercism.org/uk/tracks/powershell/exercises/list-ops/iterations"}},{"uuid":"8334dd37aa344493a4612222c684ea36","snippet":"<# .SYNOPSIS Implement basic list operations. .DESCRIPTION Implement a series of basic list operations, without using existing functions: - `append` (*given two lists, add all items in the second list to the end of the first list*); - `concatenate` (*given a series of lists, combine all items in all lists into one flattened list*); - `filter` (*given a predicate and a list, return the list of all items for which `predicate(item)` is True*); - `length` (*given a list, return the total number of items within it*); ","num_views":0,"num_stars":0,"num_comments":0,"representation_num_published_solutions":1,"num_iterations":1,"num_loc":91,"iteration_status":"analyzing","published_iteration_head_tests_status":"passed","published_at":"2026-05-10T01:45:22.000Z","is_out_of_date":false,"language":"powershell","author":{"handle":"zappyo"},"exercise":{"title":"Операції з масивом","icon_url":"https://assets.exercism.org/exercises/list-ops.svg"},"track":{"title":"PowerShell","icon_url":"https://assets.exercism.org/tracks/powershell.svg","highlightjs_language":"powershell"},"links":{"public_url":"https://exercism.org/uk/tracks/powershell/exercises/list-ops/solutions/zappyo","private_iterations_url":"https://exercism.org/uk/tracks/powershell/exercises/list-ops/iterations"}},{"uuid":"3754653a75364fce876e7e4d7e2c8500","snippet":"<# .SYNOPSIS Implement basic list operations. .DESCRIPTION Implement a series of basic list operations, without using existing functions: - `append` (*given two lists, add all items in the second list to the end of the first list*); - `concatenate` (*given a series of lists, combine all items in all lists into one flattened list*); - `filter` (*given a predicate and a list, return the list of all items for which `predicate(item)` is True*); - `length` (*given a list, return the total number of items within it*); ","num_views":0,"num_stars":0,"num_comments":0,"representation_num_published_solutions":1,"num_iterations":1,"num_loc":75,"iteration_status":"analyzing","published_iteration_head_tests_status":"passed","published_at":"2025-06-23T21:05:47.000Z","is_out_of_date":false,"language":"powershell","author":{"handle":"wllsdwsk"},"exercise":{"title":"Операції з масивом","icon_url":"https://assets.exercism.org/exercises/list-ops.svg"},"track":{"title":"PowerShell","icon_url":"https://assets.exercism.org/tracks/powershell.svg","highlightjs_language":"powershell"},"links":{"public_url":"https://exercism.org/uk/tracks/powershell/exercises/list-ops/solutions/wllsdwsk","private_iterations_url":"https://exercism.org/uk/tracks/powershell/exercises/list-ops/iterations"}},{"uuid":"2ece0515b6de4bd88f7a19fec2478f7c","snippet":"Function Invoke-Append() { [CmdletBinding()] Param( [object[]]$List1, [object[]]$List2 ) $len1 = if ($null -ne $List1) { $List1.Count } else { 0 } $len2 = if ($null -ne $List2) { $List2.Count } else { 0 } if ($len1 + $len2 -eq 0) { return , [object[]]@() ","num_views":0,"num_stars":0,"num_comments":0,"representation_num_published_solutions":1,"num_iterations":1,"num_loc":123,"iteration_status":"no_automated_feedback","published_iteration_head_tests_status":"passed","published_at":"2026-08-05T15:54:48.000Z","is_out_of_date":false,"language":"powershell","author":{"handle":"david82"},"exercise":{"title":"Операції з масивом","icon_url":"https://assets.exercism.org/exercises/list-ops.svg"},"track":{"title":"PowerShell","icon_url":"https://assets.exercism.org/tracks/powershell.svg","highlightjs_language":"powershell"},"links":{"public_url":"https://exercism.org/uk/tracks/powershell/exercises/list-ops/solutions/david82","private_iterations_url":"https://exercism.org/uk/tracks/powershell/exercises/list-ops/iterations"}},{"uuid":"abdc0b9eb82247fd9985e47a84a4db5f","snippet":"Function Invoke-Append($List1, $List2) { $r = $List1 + $List2 $r } Function Invoke-Concatenate($Lists) { $r = @() foreach ($lst in $Lists){ $r += $lst } $r ","num_views":0,"num_stars":0,"num_comments":0,"representation_num_published_solutions":1,"num_iterations":2,"num_loc":62,"iteration_status":"no_automated_feedback","published_iteration_head_tests_status":"passed","published_at":"2023-12-18T16:24:57.000Z","is_out_of_date":false,"language":"powershell","author":{"handle":"menketechnologies"},"exercise":{"title":"Операції з масивом","icon_url":"https://assets.exercism.org/exercises/list-ops.svg"},"track":{"title":"PowerShell","icon_url":"https://assets.exercism.org/tracks/powershell.svg","highlightjs_language":"powershell"},"links":{"public_url":"https://exercism.org/uk/tracks/powershell/exercises/list-ops/solutions/menketechnologies","private_iterations_url":"https://exercism.org/uk/tracks/powershell/exercises/list-ops/iterations"}},{"uuid":"36511aa2b08f47bb9603f56a2766f9f9","snippet":"<# .SYNOPSIS Implement basic list operations. .DESCRIPTION Implement a series of basic list operations, without using existing functions: - `append` (*given two lists, add all items in the second list to the end of the first list*); - `concatenate` (*given a series of lists, combine all items in all lists into one flattened list*); - `filter` (*given a predicate and a list, return the list of all items for which `predicate(item)` is True*); - `length` (*given a list, return the total number of items within it*); ","num_views":0,"num_stars":0,"num_comments":0,"representation_num_published_solutions":1,"num_iterations":1,"num_loc":86,"iteration_status":"no_automated_feedback","published_iteration_head_tests_status":"passed","published_at":"2025-02-19T19:40:46.000Z","is_out_of_date":false,"language":"powershell","author":{"handle":"Jambag"},"exercise":{"title":"Операції з масивом","icon_url":"https://assets.exercism.org/exercises/list-ops.svg"},"track":{"title":"PowerShell","icon_url":"https://assets.exercism.org/tracks/powershell.svg","highlightjs_language":"powershell"},"links":{"public_url":"https://exercism.org/uk/tracks/powershell/exercises/list-ops/solutions/Jambag","private_iterations_url":"https://exercism.org/uk/tracks/powershell/exercises/list-ops/iterations"}},{"uuid":"a8c3a27d91984bbe983bcce16ed91381","snippet":"<# .SYNOPSIS Implement basic list operations. .DESCRIPTION Implement a series of basic list operations, without using existing functions: - `append` (*given two lists, add all items in the second list to the end of the first list*); 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