Performance profiling for xp-forge/sequence

Operations.class.php

<?php

use util\data\Sequence;

class Operations extends \util\profiling\Measurable {
  private static $range;

  static function __static() {
    self::$range= range(0, 9999);
  }

  #[@measure]
  public function filter() {
    return Sequence::of(self::$range)
      ->filter(function($_) { return 0 === $_ % 2; })
      ->each()
    ;
  }

  #[@measure]
  public function map() {
    return Sequence::of(self::$range)
      ->map(function($_) { return $_ * 2; })
      ->each()
    ;
  }

  #[@measure]
  public function peek() {
    return Sequence::of(self::$range)
      ->peek(function($_) { /* NOOP */ })
      ->each()
    ;
  }

  #[@measure]
  public function flatten() {
    return Sequence::of(self::$range)
      ->flatten(function($_) { return [$_, $_ * 2]; })
      ->each()
    ;
  }

  #[@measure]
  public function skip_n() {
    return Sequence::of(self::$range)
      ->skip(1000)
      ->each()
    ;
  }

  #[@measure]
  public function skip() {
    return Sequence::of(self::$range)
      ->skip(function($_) { return $_ < 1000; })
      ->each()
    ;
  }

  #[@measure]
  public function limit_n() {
    return Sequence::of(self::$range)
      ->limit(9000)
      ->each()
    ;
  }

  #[@measure]
  public function limit() {
    return Sequence::of(self::$range)
      ->limit(function($_) { return $_ >= 9000; })
      ->each()
    ;
  }
}