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Either start or not a "d"

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  • B Offline
    B Offline
    Bernhard Hiller
    wrote on last edited by
    #1

    I try to get the date number format from a date format string. The date number format is - if present - either a single d or a double d. But the whole string can contain a place holder for the dayname also - ddd or dddd. How can I get the d or dd, if present? I tried [^d](?<pattern>d{1,2})[^d] which works well with the standard German format (dddd, d. MMMM yyyy). But that fails when the daynumber comes first (say: d. dddd MMMM yyyy; here, ^(?<pattern>d{1,2})[^d] does the trick), and it fails when the daynumber comes last. Actually I need something like a "either start of the string or not a d", i.e. ^|[^d] - but that does not work. How can that be solved?

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    • B Bernhard Hiller

      I try to get the date number format from a date format string. The date number format is - if present - either a single d or a double d. But the whole string can contain a place holder for the dayname also - ddd or dddd. How can I get the d or dd, if present? I tried [^d](?<pattern>d{1,2})[^d] which works well with the standard German format (dddd, d. MMMM yyyy). But that fails when the daynumber comes first (say: d. dddd MMMM yyyy; here, ^(?<pattern>d{1,2})[^d] does the trick), and it fails when the daynumber comes last. Actually I need something like a "either start of the string or not a d", i.e. ^|[^d] - but that does not work. How can that be solved?

      B Offline
      B Offline
      Bernhard Hiller
      wrote on last edited by
      #2

      Solved it with @"\b(?d{1,2})\b"

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