Nullable型

ja

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Nullable型

Quality:

Nullable type - a data type that can have the special value NULL. Article “Nullable型” in Japanese Wikipedia has 21.6 points for quality (as of July 1, 2025). The article contains 18 references and 8 sections.

This article has the best quality in Chinese Wikipedia. However, the most popular language version of this article is English.

Since the creation of article “Nullable型”, its content was written by 4 registered users of Japanese Wikipedia and edited by 82 registered Wikipedia users in all languages.

The article is cited 67 times in Japanese Wikipedia and cited 122 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (Japanese): #38775 in June 2020
  • Global: #221835 in October 2013

The highest popularity rank from 2008:

  • Local (Japanese): #448232 in June 2022
  • Global: #74431 in June 2012

There are 4 language versions for this article in the WikiRank database (of the considered 55 Wikipedia language editions).

The quality and popularity assessment was based on Wikipédia dumps from July 1, 2025 (including revision history and pageviews for previous years).

The table below shows the language versions of the article with the highest quality.

Languages with the highest quality

#LanguageQuality gradeQuality score
1Chinese (zh)
可空类型
29.6293
2English (en)
Nullable type
27.5541
3Japanese (ja)
Nullable型
21.569
4Korean (ko)
널러블 타입
1.1892
More...

The following table shows the most popular language versions of the article.

Most popular in all the time

The most popular language versions of the article "Nullable型" in all the time
#LanguagePopularity awardRelative popularity
1English (en)
Nullable type
308 204
2Japanese (ja)
Nullable型
7 327
3Chinese (zh)
可空类型
895
4Korean (ko)
널러블 타입
150
More...

The following table shows the language versions of the article with the highest popularity in the last month.

Most popular in June 2025

The most popular language versions of the article "Nullable型" in June 2025
#LanguagePopularity awardRelative popularity
1English (en)
Nullable type
1 276
2Japanese (ja)
Nullable型
85
3Chinese (zh)
可空类型
22
4Korean (ko)
널러블 타입
12
More...

The following table shows the language versions of the article with the highest Authors’ Interest.

The highest AI

Language versions of the article "Nullable型" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1English (en)
Nullable type
76
2Japanese (ja)
Nullable型
4
3Chinese (zh)
可空类型
2
4Korean (ko)
널러블 타입
0
More...

The following table shows the language versions of the article with the highest Authors’ Interest in the last month.

The highest AI in June 2025

Language versions of the article "Nullable型" with the highest AI in June 2025
#LanguageAI awardRelative AI
1English (en)
Nullable type
0
2Japanese (ja)
Nullable型
0
3Korean (ko)
널러블 타입
0
4Chinese (zh)
可空类型
0
More...

The following table shows the language versions of the article with the highest number of citations.

The highest CI

Language versions of the article "Nullable型" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1Japanese (ja)
Nullable型
67
2English (en)
Nullable type
46
3Chinese (zh)
可空类型
5
4Korean (ko)
널러블 타입
4
More...

Scores

Estimated value for Wikipedia:
Japanese:
Global:
Popularity in June 2025:
Japanese:
Global:
Popularity in all years:
Japanese:
Global:
Authors in June 2025:
Japanese:
Global:
Registered authors in all years:
Japanese:
Global:
Citations:
Japanese:
Global:

Quality measures

Interwikis

#LanguageValue
enEnglish
Nullable type
jaJapanese
Nullable型
koKorean
널러블 타입
zhChinese
可空类型

Popularity rank trends

Best Rank Japanese:
#448232
06.2022
Global:
#74431
06.2012

AI rank trends

Best Rank Japanese:
#38775
06.2020
Global:
#221835
10.2013

Languages comparison

Important global interconnections (July 2024 – June 2025)

Wikipedia readers most often find their way to information on Nullable type from Wikipedia articles about Null pointer, Option type, JSON, Void safety and Null object pattern. Whereas reading the article about Nullable type people most often go to Wikipedia articles on Option type, Null object pattern, Null coalescing operator, Three-valued logic and Semipredicate problem.

Cumulative results of quality and popularity of the Wikipedia article

List of Wikipedia articles in different languages (starting with the most popular):

News from 10 March 2026

On 10 March 2026 in multilingual Wikipedia, Internet users most often read articles on the following topics: Iran, Mojtaba Khamenei, Enhypen, Ali Khamenei, Strait of Hormuz, Jeffrey Epstein, 2026 Iran war, 2026 World Baseball Classic, Donald Trump, World Baseball Classic.

In Japanese Wikipedia the most popular articles on that day were: 周東佑京, 警察庁長官狙撃事件, 谷原七音, 東日本大震災, オンドジェイ・サトリア, The GazettE, 金丸夢斗, 髙橋宏斗, ワールド・ベースボール・クラシック, チェコ.

About WikiRank

The WikiRank project is intended for automatic relative evaluation of the articles in the various language versions of Wikipedia. At the moment the service allows to compare over 44 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2025. When calculating current popularity and AI of articles data from June 2025 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2025... More information