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Merge pull request #39 from mgomes/mgomes/v0-9-array-phase2
Expand Array helpers for v0.9.0
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‎docs/arrays.md‎

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@@ -12,6 +12,7 @@ Common enumerable helpers include:
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- `map` to transform elements.
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- `select` to filter items.
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- `find` / `find_index` to locate the first matching item.
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- `reduce` to accumulate values.
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- `first(n)` / `last(n)` to slice without mutating.
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- `push`/`pop` for building or removing values while keeping the original array untouched.
@@ -32,6 +33,42 @@ def total_by_multiplier(values, multiplier)
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end
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```
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## Search and predicates
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- `include?(value)` for membership checks.
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- `index(value, offset = 0)` / `rindex(value, offset = last_index)` for positional lookup.
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- `count`, `count(value)`, or `count { ... }`.
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- `any?`, `all?`, `none?` with optional blocks.
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```vibe
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def health_checks(values)
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{
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has_zero: values.include?(0),
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first_large_idx: values.index(100),
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all_non_negative: values.all? { |v| v >= 0 }
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}
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end
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```
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## Ordering and grouping
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- `reverse`, `sort`, and `sort_by`.
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- `partition` to split into matching and non-matching arrays.
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- `group_by` to collect values by key.
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- `tally` to count symbol/string occurrences.
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```vibe
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def summarize(players)
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grouped = players.group_by { |p| p[:status] }
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counts = players.map { |p| p[:status] }.tally
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{
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by_status: grouped,
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totals: counts
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}
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end
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```
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## Set-like Operations
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Use `+` to concatenate and `-` to subtract values:

‎examples/arrays/extras.vibe‎

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@@ -38,3 +38,79 @@ end
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def subtract_values(first, second)
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first - second
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end
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def include_value(values, value)
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values.include?(value)
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end
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def first_match(values, threshold)
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values.find do |value|
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value > threshold
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end
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end
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def first_match_index(values, threshold)
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values.find_index do |value|
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value > threshold
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end
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end
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def count_value(values, value)
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values.count(value)
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end
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def count_large(values, threshold)
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values.count do |value|
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value > threshold
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end
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end
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def predicate_snapshot(values)
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any_large = values.any? do |value|
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value > 10
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end
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all_positive = values.all? do |value|
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value > 0
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end
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none_negative = values.none? do |value|
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value < 0
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end
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{
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any_large: any_large,
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all_positive: all_positive,
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none_negative: none_negative
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}
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end
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def sort_values(values)
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values.sort
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end
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def sort_desc(values)
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values.sort do |a, b|
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b - a
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end
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end
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def sort_words_by_length(words)
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words.sort_by do |word|
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word.length
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end
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end
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def partition_even(values)
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values.partition do |value|
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value % 2 == 0
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end
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end
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def group_by_status(players)
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players.group_by do |player|
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player[:status]
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end
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end
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def tally_statuses(statuses)
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statuses.tally
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end

‎vibes/examples_test.go‎

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@@ -346,6 +346,151 @@ func TestExamples(t *testing.T) {
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},
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want: arrayVal(intVal(1), intVal(3)),
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},
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{
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name: "arrays/include_value_true",
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file: "arrays/extras.vibe",
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function: "include_value",
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args: []Value{
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arrayVal(intVal(1), intVal(2), intVal(3)),
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intVal(2),
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},
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want: boolVal(true),
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},
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{
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name: "arrays/include_value_false",
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file: "arrays/extras.vibe",
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function: "include_value",
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args: []Value{
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arrayVal(intVal(1), intVal(2), intVal(3)),
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intVal(9),
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},
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want: boolVal(false),
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},
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{
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name: "arrays/first_match",
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file: "arrays/extras.vibe",
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function: "first_match",
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args: []Value{
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arrayVal(intVal(2), intVal(5), intVal(7)),
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intVal(4),
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},
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want: intVal(5),
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},
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{
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name: "arrays/first_match_index",
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file: "arrays/extras.vibe",
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function: "first_match_index",
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args: []Value{
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arrayVal(intVal(2), intVal(5), intVal(7)),
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intVal(4),
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},
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want: intVal(1),
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},
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{
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name: "arrays/count_value",
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file: "arrays/extras.vibe",
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function: "count_value",
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args: []Value{
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arrayVal(intVal(1), intVal(2), intVal(1), intVal(3)),
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intVal(1),
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},
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want: intVal(2),
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},
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{
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name: "arrays/count_large",
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file: "arrays/extras.vibe",
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function: "count_large",
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args: []Value{
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arrayVal(intVal(1), intVal(5), intVal(6)),
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intVal(4),
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},
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want: intVal(2),
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},
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{
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name: "arrays/predicate_snapshot",
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file: "arrays/extras.vibe",
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function: "predicate_snapshot",
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args: []Value{
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arrayVal(intVal(2), intVal(11), intVal(4)),
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},
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want: hashVal(map[string]Value{
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"any_large": boolVal(true),
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"all_positive": boolVal(true),
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"none_negative": boolVal(true),
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}),
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},
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{
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name: "arrays/sort_values",
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file: "arrays/extras.vibe",
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function: "sort_values",
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args: []Value{
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arrayVal(intVal(3), intVal(1), intVal(2)),
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},
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want: arrayVal(intVal(1), intVal(2), intVal(3)),
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},
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{
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name: "arrays/sort_desc",
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file: "arrays/extras.vibe",
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function: "sort_desc",
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args: []Value{
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arrayVal(intVal(3), intVal(1), intVal(2)),
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},
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want: arrayVal(intVal(3), intVal(2), intVal(1)),
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},
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{
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name: "arrays/sort_words_by_length",
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file: "arrays/extras.vibe",
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function: "sort_words_by_length",
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args: []Value{
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arrayVal(strVal("bbb"), strVal("a"), strVal("cc")),
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},
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want: arrayVal(strVal("a"), strVal("cc"), strVal("bbb")),
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},
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{
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name: "arrays/partition_even",
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file: "arrays/extras.vibe",
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function: "partition_even",
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args: []Value{
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arrayVal(intVal(1), intVal(2), intVal(3), intVal(4)),
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},
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want: arrayVal(
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arrayVal(intVal(2), intVal(4)),
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arrayVal(intVal(1), intVal(3)),
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),
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},
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{
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name: "arrays/group_by_status",
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file: "arrays/extras.vibe",
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function: "group_by_status",
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args: []Value{
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arrayVal(
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hashVal(map[string]Value{"id": strVal("p1"), "status": strVal("active")}),
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hashVal(map[string]Value{"id": strVal("p2"), "status": strVal("complete")}),
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hashVal(map[string]Value{"id": strVal("p3"), "status": strVal("active")}),
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),
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},
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want: hashVal(map[string]Value{
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"active": arrayVal(
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hashVal(map[string]Value{"id": strVal("p1"), "status": strVal("active")}),
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hashVal(map[string]Value{"id": strVal("p3"), "status": strVal("active")}),
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),
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"complete": arrayVal(
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hashVal(map[string]Value{"id": strVal("p2"), "status": strVal("complete")}),
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),
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}),
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},
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{
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name: "arrays/tally_statuses",
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file: "arrays/extras.vibe",
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function: "tally_statuses",
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args: []Value{
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arrayVal(strVal("active"), strVal("active"), strVal("complete")),
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},
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want: hashVal(map[string]Value{
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"active": intVal(2),
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"complete": intVal(1),
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}),
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},
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{
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name: "collections/make_player",
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file: "collections/hashes.vibe",

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