### Execute bundle command

Source: https://github.com/woahdae/simple_xlsx_reader/blob/master/README.md

Run this command in your terminal to install the gem after adding it to your Gemfile.

```bash
$ bundle
```

--------------------------------

### Install gem manually

Source: https://github.com/woahdae/simple_xlsx_reader/blob/master/README.md

Install the gem directly using the gem command.

```bash
$ gem install simple_xlsx_reader
```

--------------------------------

### Install simple_xlsx_reader via Gemfile

Source: https://github.com/woahdae/simple_xlsx_reader/blob/master/README.md

Add the gem to your application's Gemfile to manage dependencies.

```ruby
gem 'simple_xlsx_reader'
```

--------------------------------

### Process XLSX rows idiomatically

Source: https://github.com/woahdae/simple_xlsx_reader/blob/master/README.md

Example of using the library to map row data into a hash using standard Ruby enumerables.

```ruby
# quick example having fun w/ ruby
doc = SimpleXlsxReader.open(file_path) # or SimpleXlsxReader.parse(string_or_io)
doc.sheets.first.rows.each(headers: {id: /ID/})
  .with_index.with_object({}) do |(row, index), acc|
    acc[row[:id]] = index
end
```

--------------------------------

### Open and stream XLSX data

Source: https://github.com/woahdae/simple_xlsx_reader/blob/master/README.md

Demonstrates opening a workbook and streaming rows using various header configurations.

```ruby
doc = SimpleXlsxReader.open('/path/to/workbook.xlsx')
doc.sheets # => [<#SXR::Sheet>, ...]
doc.sheets.first.name # 'Sheet1'
rows = doc.sheets.first.rows # <SXR::Document::RowsProxy>
rows.each # an <Enumerator> ready to chain or stream
rows.each {} # Streams the rows to your block
rows.each(headers: true) {} # Streams row-hashes
rows.each(headers: {id: /ID/}) {} # finds & maps headers, streams
rows.slurp # Slurps rows into memory as a 2D array
```

--------------------------------

### Open an XLSX sheet

Source: https://github.com/woahdae/simple_xlsx_reader/blob/master/README.md

Obtain a rows proxy from the first sheet of an XLSX file.

```ruby
rows = SimpleXlsxReader.open('suited_heroes.xlsx').sheets.first.rows
```

--------------------------------

### Git workflow commands

Source: https://github.com/woahdae/simple_xlsx_reader/blob/master/README.md

Standard commands for creating a feature branch, committing changes, and pushing to a remote repository.

```bash
git checkout -b my-new-feature
```

```bash
git commit -am 'Add some feature'
```

```bash
git push origin my-new-feature
```

--------------------------------

### Stream rows with custom header mapping

Source: https://github.com/woahdae/simple_xlsx_reader/blob/master/README.md

Use a hash to map header keys and identify the correct header row.

```ruby
rows.each(headers: {id: /ID/, name: /Name/}).with_object({}) do |row, acc|
  acc[row[:id]] = row[:name]
end
```

--------------------------------

### Stream rows with block-based header detection

Source: https://github.com/woahdae/simple_xlsx_reader/blob/master/README.md

Use a block to identify the header row when mapping is complex.

```ruby
object_map = { Hero => { id: 'Hero ID', name: 'Hero Name', location: 'Location' } }

HEADERS = ['Hero ID', 'Hero Name', 'Location']

rows.each(headers: ->(row) { (HEADERS & row).any? }) do |row|
  object_map.each_pair do |klass, attribute_map|
    attributes =
      attribute_map.each_pair.with_object({}) do |(key, header), attrs|
        attrs[key] = row[header]
      end

    klass.new(attributes)
  end
end
```

--------------------------------

### Stream rows with headers

Source: https://github.com/woahdae/simple_xlsx_reader/blob/master/README.md

Process rows using headers to map values into an object.

```ruby
rows.each(headers: true).with_object({}) do |row, acc|
  acc[row['Hero ID']] = row['Hero Name']
end
```

--------------------------------

### Stream rows

Source: https://github.com/woahdae/simple_xlsx_reader/blob/master/README.md

Iterate over rows using the each method.

```ruby
rows.each { |row| ... }
```

--------------------------------

### Cell load error structure

Source: https://github.com/woahdae/simple_xlsx_reader/blob/master/README.md

The format of the error hash when catch_cell_load_errors is enabled.

```ruby
{
  [rownum, colnum] => '[error]'
}
```

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