How to convert this construction into twig?

Question

Twig

foreach ($languages ​​as $language) {
if(!isset($menu_new[$language['language_id']])) $menu_new[$language['language_id']] = "text";
}
doesn't work like this
{% for language in languages ​​%}
{% if (menu_new[language.language_id] is defined) %} {% set menu_new[language.language_id] = "text" %}{% endif %}
{% endfor %}

Answer 1

Maybe instead of menu_new[language.language_id]
try menu_new.language.language_id?
... and replace menu_new[language.language_id] with menu_new.language.language_id

Answer 2

{% for language in languages %}
{% if menu_new[language.language_id] is not defined %}
    {% set menu_new[language.language_id] = "text" %}
{% endif %}
{% endfor %}