Last Updated：2025/11/19

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(programming) A metasyntactic variable used to represent an unspecified entity. If part of a series of such entities, it is often the first in the series, and followed immediately by bar.

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foo

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Source Word

foo

IPA(Pronunciation)

/fuː/

Noun

uncountable alt-of slang

(programming) A metasyntactic variable used to represent an unspecified entity. If part of a series of such entities, it is often the first in the series, and followed immediately by bar.

Japanese Meaning

プログラミングにおいて、不特定の対象を表すために用いられるメタ記号変数。一般的には、連続する変数の中で最初に使われ、その次に「bar」が続く場合が多い

What is this buttons?

In the code examples, foo was used as a generic placeholder for values whenever the actual identifier was irrelevant.

Google Translation / DeepL Translation

コード例では、実際の識別子が重要でない場合、値の一般的なプレースホルダ名としてメタ構文変数が使われていました。

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Sense（1）

(programming) A metasyntactic variable used to represent an unspecified entity. If part of a series of such entities, it is often the first in the series, and followed immediately by bar.