Match matchAsPrefix(
String string,
[int start = 0]
)

Match this pattern against the start of string.

If start is provided, it must be an integer in the range 0 .. string.length. In that case, this patten is tested against the string at the start position. That is, a Match is returned if the pattern can match a part of the string starting from position start. Returns null if the pattern doesn't match.

Source

/**
 * Match this pattern against the start of `string`.
 *
 * If [start] is provided, it must be an integer in the range `0` ..
 * `string.length`. In that case, this patten is tested against the
 * string at the [start] position. That is, a [Match] is returned if the
 * pattern can match a part of the string starting from position [start].
 * Returns `null` if the pattern doesn't match.
 */
Match matchAsPrefix(String string, [int start = 0]);