CharNoList()

Posted on February 7, 2014 by vivaclipper

CHARNOLIST()

Generates a list of all characters not contained in a string

Syntax

      CHARNOLIST( [<cString>] ) -> cCharacterList

Arguments

[<cString>] is the string for whom the function generates a list of all characters not contained in that string Default: “” (empty string)

Returns

<cCharacterList> a list of the characters that are not contained in <cString>

Description

The CHARNOLIST() function generates a list of those characters that are not contained in <cString>. This list can contain each character only once, so that its maximum length is 256. The list is alphabetically sorted.

Examples

      ? charnolist( charnolist( "Hello World !" ) ) // --> " !HWdelor"

Tests

      charnolist( charnolist( "Hello World !" ) ) == charslist( "Hello World !" )
      charnolist( charnolist( NIL ) ) == ""

Compliance

CHARNOLIST() is compatible with CT3’s CHARNOLIST().

Platforms

All

Files

Source is charlist.c, library is libct.

Seealso

CHARLIST(), CHARSLIST(), CHARHIST()

CharList()

Posted on February 7, 2014 by vivaclipper

CHARLIST()

Generates a list of all characters in a string

Syntax

      CHARLIST( [<cString>] ) -> cCharacterList

Arguments

[<cString>] is the string for whom the function generates a list of all characters Default: “” (empty string)

Returns

<cCharacterList> a list of the characters in <cString>

Description

The CHARLIST() function generates a list of those characters that are contained in <cString>. This list can contain each character only once, so that its maximum length is 256. The list lists those characters first that are occuring in <cString> first.

Examples

      ? charlist( "Hello World !" ) // --> "Helo Wrd!"

Tests

      charlist( "Hello World !" ) == "Helo Wrd!"
      charlist( NIL ) == ""

Compliance

CHARLIST() is compatible with CT3’s CHARLIST().

Platforms

All

Files

Source is charlist.c, library is libct.

Seealso

CHARNOLIST(), CHARSLIST(), CHARHIST()

CharHist()

Posted on February 7, 2014 by vivaclipper

CHARHIST()

Generates a character histogram of a string

Syntax

      CHARHIST( [<cString>] ) -> aCharacterCount

Arguments

[<cString>] is the string for whom the function generates a character histogram Default: “” (empty string)

Returns

<aCharacterCount> an array with 256 elements where the nth element contains the count of character #(n-1) in cString

Description

The CHARHIST() function generates a character histogram of those characters that are contained in <cString>. This histogram is stored in an 256-element array where the nth element contains the count of ASCII character #(n-1) in <cString>.

Examples

      ? charhist( "Hello World !" )[ 109 ] // --> 3  // Chr( 108 ) == "l"

Tests

      charhist( "Hello World !" )[ 109 ] == 3
      eval( {|| AEval( charhist( "Hello World !" ), {| x | nTotal += x } ), nTotal == Len( "Hello World !" ) }

Compliance

CHARHIST() is only available in Harbour’s CT3 library.

Platforms

All

Files

Source is charlist.c, library is libct.

Seealso

CHARLIST(), CHARNOLIST(), CHARSLIST()