先せん頭とう位い置ち

noun

lead position; first position (in a string)

Computing term for the initial position in a sequence, such as the first character in a string or the first element in a list.

• 文も字じ列れつの先せん頭とう位い置ちから検けん索さくを開かい始しする。

  Start the search from the first position of the string.