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Similar blocks of code found in 5 locations. Consider refactoring.
Open

    def dump_counties_csv(output)
      csv = CSV.new(output)
      csv << ["ZCTA5", "County GEOID", "Land Area", "Water Area"]
      zcta_data.each_value do |zcta|
        zcta[:counties].each do |county_geoid, area|
Severity: Major
Found in data/lib/us_geo_data/zcta.rb and 4 other locations - About 45 mins to fix
data/lib/us_geo_data/urban_area.rb on lines 31..44
data/lib/us_geo_data/urban_area.rb on lines 47..60
data/lib/us_geo_data/urban_area.rb on lines 63..76
data/lib/us_geo_data/zcta.rb on lines 44..57

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 41.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 5 locations. Consider refactoring.
Open

    def dump_county_subdivisions_csv(output)
      csv = CSV.new(output)
      csv << ["Urban Area GEOID", "County Subdivision GEOID", "Land Area", "Water Area"]
      urban_area_data.each_value do |urban_area|
        urban_area[:county_subdivisions].each do |county_subdivision_geoid, area|
Severity: Major
Found in data/lib/us_geo_data/urban_area.rb and 4 other locations - About 45 mins to fix
data/lib/us_geo_data/urban_area.rb on lines 31..44
data/lib/us_geo_data/urban_area.rb on lines 63..76
data/lib/us_geo_data/zcta.rb on lines 28..41
data/lib/us_geo_data/zcta.rb on lines 44..57

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 41.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 5 locations. Consider refactoring.
Open

    def dump_county_subdivisions_csv(output)
      csv = CSV.new(output)
      csv << ["ZCTA5", "County Subdivision GEOID", "Land Area", "Water Area"]
      zcta_data.each_value do |zcta|
        zcta[:county_subdivisions].each do |county_subdivision_geoid, area|
Severity: Major
Found in data/lib/us_geo_data/zcta.rb and 4 other locations - About 45 mins to fix
data/lib/us_geo_data/urban_area.rb on lines 31..44
data/lib/us_geo_data/urban_area.rb on lines 47..60
data/lib/us_geo_data/urban_area.rb on lines 63..76
data/lib/us_geo_data/zcta.rb on lines 28..41

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 41.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 5 locations. Consider refactoring.
Open

    def dump_counties_csv(output)
      csv = CSV.new(output)
      csv << ["Urban Area GEOID", "County GEOID", "Land Area", "Water Area"]
      urban_area_data.each_value do |urban_area|
        urban_area[:counties].each do |county_geoid, area|
Severity: Major
Found in data/lib/us_geo_data/urban_area.rb and 4 other locations - About 45 mins to fix
data/lib/us_geo_data/urban_area.rb on lines 47..60
data/lib/us_geo_data/urban_area.rb on lines 63..76
data/lib/us_geo_data/zcta.rb on lines 28..41
data/lib/us_geo_data/zcta.rb on lines 44..57

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 41.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 5 locations. Consider refactoring.
Open

    def dump_zctas_csv(output)
      csv = CSV.new(output)
      csv << ["Urban Area GEOID", "ZCTA5", "Land Area", "Water Area"]
      urban_area_data.each_value do |urban_area|
        urban_area[:zctas].each do |zcta5, area|
Severity: Major
Found in data/lib/us_geo_data/urban_area.rb and 4 other locations - About 45 mins to fix
data/lib/us_geo_data/urban_area.rb on lines 31..44
data/lib/us_geo_data/urban_area.rb on lines 47..60
data/lib/us_geo_data/zcta.rb on lines 28..41
data/lib/us_geo_data/zcta.rb on lines 44..57

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 41.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Method subdivision_data has a Cognitive Complexity of 8 (exceeds 5 allowed). Consider refactoring.
Open

    def subdivision_data
      unless defined?(@subdivision_data)
        gnis_subdivisions = gnis_subdivision_mapping

        subdivisions = {}
Severity: Minor
Found in data/lib/us_geo_data/county_subdivision.rb - About 45 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Method dump_csv has a Cognitive Complexity of 8 (exceeds 5 allowed). Consider refactoring.
Open

    def dump_csv(output)
      CSV.new(output).tap do |csv|
        csv << ["Name", "Code", "Type", "FIPS", "Region ID", "Region", "Division ID", "Division", "Population", "Housing Units", "Land Area", "Water Area"]
        state_data.each_value do |data|
          csv << [
Severity: Minor
Found in data/lib/us_geo_data/state.rb - About 45 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Similar blocks of code found in 2 locations. Consider refactoring.
Open

        csv << [
          data[:geoid],
          data[:gnis_id],
          data[:name],
          data[:county_geoid],
Severity: Minor
Found in data/lib/us_geo_data/county_subdivision.rb and 1 other location - About 45 mins to fix
data/lib/us_geo_data/zcta.rb on lines 11..23

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 40.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 2 locations. Consider refactoring.
Open

        csv << [
          data[:zcta],
          data[:primary_county],
          data[:primary_county_subdivision],
          data[:primary_place],
Severity: Minor
Found in data/lib/us_geo_data/zcta.rb and 1 other location - About 45 mins to fix
data/lib/us_geo_data/county_subdivision.rb on lines 15..27

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 40.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Method dump_csv has a Cognitive Complexity of 8 (exceeds 5 allowed). Consider refactoring.
Open

    def dump_csv(output)
      csv = CSV.new(output)
      csv << ["GEOID", "GNIS ID", "Name", "Short Name", "State", "CBSA", "Metropolitan Division", "Central", "Time Zone", "Time Zone 2", "FIPS Class", "Population", "Housing Units", "Land Area", "Water Area", "Latitude", "Longitude"]
      county_data.each_value do |data|
        unless data[:time_zone] && data[:gnis_id] && data[:fips_class]
Severity: Minor
Found in data/lib/us_geo_data/county.rb - About 45 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Similar blocks of code found in 3 locations. Consider refactoring.
Open

    def add_demographics(subdivisions)
      demographics(data_file(USGeoData::COUSUB_POPULATION_FILE)).each do |geoid, population|
        info = subdivisions[geoid]
        info[:population] = population if info
      end
Severity: Major
Found in data/lib/us_geo_data/county_subdivision.rb and 2 other locations - About 40 mins to fix
data/lib/us_geo_data/place.rb on lines 178..186
data/lib/us_geo_data/zcta.rb on lines 139..147

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 38.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 3 locations. Consider refactoring.
Open

    def add_demographics(data)
      demographics(data_file(USGeoData::ZCTA_POPULATION_FILE)).each do |zcta5, population|
        info = data[zcta5]
        info[:population] = population if info
      end
Severity: Major
Found in data/lib/us_geo_data/zcta.rb and 2 other locations - About 40 mins to fix
data/lib/us_geo_data/county_subdivision.rb on lines 74..82
data/lib/us_geo_data/place.rb on lines 178..186

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 38.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 3 locations. Consider refactoring.
Open

    def add_demographics(places)
      demographics(data_file(USGeoData::PLACE_POPULATION_FILE)).each do |geoid, population|
        info = places[geoid]
        info[:population] = population if info
      end
Severity: Major
Found in data/lib/us_geo_data/place.rb and 2 other locations - About 40 mins to fix
data/lib/us_geo_data/county_subdivision.rb on lines 74..82
data/lib/us_geo_data/zcta.rb on lines 139..147

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 38.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Method add_counties has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.
Open

    def add_counties(data)
      foreach(processed_file(Gnis::PLACE_COUNTIES_FILE), col_sep: ",") do |row|
        place_geoid = row["Place GEOID"]
        county_geoid = row["County GEOID"]
Severity: Minor
Found in data/lib/us_geo_data/place.rb - About 35 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Method place_data has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.
Open

    def place_data
      unless defined?(@place_data)
        places = {}

        gnis_places = gnis_place_mapping
Severity: Minor
Found in data/lib/us_geo_data/place.rb - About 35 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Similar blocks of code found in 2 locations. Consider refactoring.
Open

    class << self
      def name(id)
        unless defined?(@name_map)
          map = {}
          processor = new
Severity: Minor
Found in data/lib/us_geo_data/division.rb and 1 other location - About 35 mins to fix
data/lib/us_geo_data/region.rb on lines 7..17

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 35.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 2 locations. Consider refactoring.
Open

    class << self
      def name(id)
        unless defined?(@name_map)
          map = {}
          processor = new
Severity: Minor
Found in data/lib/us_geo_data/region.rb and 1 other location - About 35 mins to fix
data/lib/us_geo_data/division.rb on lines 7..17

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 35.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Method density has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

  def density(density)
    return nil unless density

    round = if density < 1
      3
Severity: Minor
Found in explorer_app/app/helpers/application_helper.rb - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Method index has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

  def index
    cbsas = if @combined_statistical_area
      @combined_statistical_area.core_based_statistical_areas.order(:name)
    else
      USGeo::CoreBasedStatisticalArea.not_removed.order(:name)
Severity: Minor
Found in explorer_app/app/controllers/core_based_statistical_areas_controller.rb - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Method add_gazetteer_data has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def add_gazetteer_data(counties)
      foreach(data_file(USGeoData::COUNTY_GAZETTEER_FILE), col_sep: "\t") do |row|
        county_geoid = row["GEOID"]
        data = counties[county_geoid]
        unless data
Severity: Minor
Found in data/lib/us_geo_data/county.rb - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

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