Tag Archives: CHARNOLIST

CharSList()

Posted on by vivaclipper

CHARSLIST()

Generates a sorted list of all characters in a string

Syntax

      CHARSLIST( [<cString>] ) -> cSortedCharacterList

Arguments

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

Returns

<cSortedCharacterList> a sorted list of the characters in <cString>

Description

The CHARLIST() function generates a sorted 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 function gives the same result as CHARSORT(CHARLIST(<cString>))

Examples

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

Tests

      charslist( "Hello World !" ) == " !HWdelor"
      charslist( "Hello World !" ) == charsort (charlist ("Hello World !"))
      charslist( NIL ) == ""

Compliance

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

Platforms

All

Files

Source is charlist.c, library is libct.

Seealso

CHARNOLIST(), CHARLIST(), CHARHIST()

CharList()

Posted on 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 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()

Harbour All Functions – C

Posted on by vivaclipper

CD / CHDIR / DirChange

CDoW

Chr

CharAdd
CharAnd
CharEven
CharHist
CharList
CharMirr
CharMix
CharNoList
CharNot
CharOdd
CharOne
CharOnly
CharOr
CharPix
CharRela
CharRelRep
CharRem
CharRepl
CharRLL
CharRLR
CharSHL
CharSHR
CharSList
CharSort
CharSub
CharSwap
CharWin
CharXOR

CLIPINIT
CMonth

Col

Cos

CosH

CountLeft
CountRight

CToBit

CToD

CToDoW
CToF
CToMonth
CToN

CurDir

CSetArgErr
CSetAtMuPa
CSetRef
CTCExit
CTCInit
CTExit
CTInit

CT_CHARNOLIST

Posted on by vivaclipper 
 CHARNOLIST()
 Lists the characters that do not appear in a string

 Syntax

     CHARNOLIST([<cString>]) --> cNotContained

 Argument

     <cString>  Designates the string that is processed.  The default
     value is for an empty string.

 Returns

     CHARNOLIST() returns a character string that contains all characters not
     found in <cString>.

 Description

     This function determines all characters that are not contained in
     <cString>.  The resulting characters might be used as replacement
     characters or for complex deletion procedures.

 Examples

     .  Delete all characters except "XYZ":

        String := "ABXCDYEF"
        ? CHARREM(CHARNOLIST("XYZ"), String)               // "XY"

     .  Generate a list of all 256 ASCII characters:

        ? CHARNOLIST()

     .  To save text to a memo field, all null characters (CHR(0))
        must be exchanged for a character that is not being used:

        cNoList   := CHARNOLIST(cMemoText)
        cNoChar   := SUBSTR(cNoList, 1, 1)
        CHARREPL(CHR(0), @cMemoText, cNoChar)

See Also: CHARLIST() CHARONE()

 

Tools – String Manipulations

Posted on by vivaclipper 
Introduction 
ADDASCII()   Adds a value to each ASCII code in a string
AFTERATNUM() Returns remainder of a string after nth appearance of sequence
ASCIISUM()   Finds sum of the ASCII values of all the characters of a string
ASCPOS()     Determines ASCII value of a character at a position in a string
ATADJUST()   Adjusts the beginning position of a sequence within a string
ATNUM()      Determines the starting position of a sequence within a string
ATREPL()     Searches for a sequence within a string and replaces it
ATTOKEN()    Finds the position of a token within a string
BEFORATNUM() Returns string segment before the nth occurrence of a sequence
CENTER()     Centers a string using pad characters
CHARADD()    Adds the corresponding ASCII codes of two strings
CHARAND()    Links corresponding ASCII codes of paired strings with AND
CHAREVEN()   Returns characters in the even positions of a string
CHARLIST()   Lists each character in a string
CHARMIRR()   Mirrors characters within a string
CHARMIX()    Mixes two strings together
CHARNOLIST() Lists the characters that do not appear in a string
CHARNOT()    Complements each character in a string
CHARODD()    Returns characters in the odd positions of a string
CHARONE()    Reduces adjoining duplicate characters in string to 1 character
CHARONLY()   Determines the common denominator between two strings
CHAROR()     Joins the corresponding ASCII code of paired strings with OR
CHARPACK()   Compresses (packs) a string
CHARRELA()   Correlates the character positions in paired strings
CHARRELREP() Replaces characters in a string depending on their correlation
CHARREM()    Removes particular characters from a string
CHARREPL()   Replaces certain characters with others
CHARSORT()   Sorts sequences within a string
CHARSPREAD() Expands a string at the tokens
CHARSWAP()   Exchanges all adjoining characters in a string
CHARUNPACK() Decompresses (unpacks) a string
CHARXOR()    Joins ASCII codes of paired strings with exclusive OR operation
CHECKSUM()   Calculates the checksum for a character string (algorithm)
COUNTLEFT()  Counts a particular character at the beginning of a string
COUNTRIGHT() Counts a particular character at the end of a string
CRYPT()      Encrypts and decrypts a string
CSETATMUPA() Determines setting of the multi-pass mode for ATXXX() functions
CSETREF()    Determines whether reference sensitive functions return a value
EXPAND()     Expands a string by inserting characters
JUSTLEFT()   Moves characters from the beginning to the end of a string
JUSTRIGHT()  Moves characters from the end of a string to the beginning
LIKE()       Compares character strings using wildcard characters
LTOC()       Converts a logical value into a character
MAXLINE()    Finds the longest line within a string
NUMAT()      Counts the number of occurrences of a sequence within a string
NUMLINE()    Determines the number of lines required for string output
NUMTOKEN()   Determines the number of tokens in a string
PADLEFT()    Pads a string on the left to a particular length
PADRIGHT()   Pads a string on the right to a particular length
POSALPHA()   Determines position of first alphabetic character in a string
POSCHAR()    Replaces individual character at particular position in string
POSDEL()     Deletes characters at a particular position in a string
POSDIFF()    Finds the first position from which two strings differ
POSEQUAL()   Finds the first position at which two strings are the same
POSINS()     Inserts characters at a particular position within a string
POSLOWER()   Finds the position of the first lower case alphabetic character
POSRANGE()   Determines position of first character in an ASCII code range
POSREPL()    Replaces one or more characters from a certain position
POSUPPER()   Finds the position of the first uppercase, alphabetic character
RANGEREM()   Deletes characters that are within a specified ASCII code range
RANGEREPL()  Replaces characters within a specified ASCII code range
REMALL()     Removes characters from the beginning and end of a string
REMLEFT()    Removes particular characters from the beginning of a string
REMRIGHT()   Removes particular characters at the end of a string
REPLALL()    Exchanges characters at the beginning and end of a string
REPLLEFT()   Exchanges particular characters at the beginning of a string
REPLRIGHT()  Exchanges particular characters at the end of a string
RESTTOKEN()  Recreates an incremental tokenizer environment
SAVETOKEN()  Saves the incremental tokenizer environment to a variable
SETATLIKE()  Provides an additional search mode for all AT functions
STRDIFF()    Finds similarity between two strings (Levenshtein Distance)
STRSWAP()    Interchanges two strings
TABEXPAND()  Converts tabs to spaces
TABPACK()    Converts spaces in tabs
TOKEN()      Selects the nth token from a string
TOKENAT()    Determines the most recent TOKENNEXT() position within a string
TOKENEND()   Determines if more tokens are available in TOKENNEXT()
TOKENINIT()  Initializes a string for TOKENNEXT()
TOKENLOWER() Converts initial alphabetic character of a token into lowercase
TOKENNEXT()  Provides an incremental tokenizer
TOKENSEP()   Provides separator before/after most recently retrieved TOKEN()
TOKENUPPER() Converts the initial letter of a token into upper case
VALPOS()     Determines numerical value of character at particular position
WORDONE()    Reduces multiple appearances of double characters to one
WORDONLY()   Finds common denominator of 2 strings on double character basis
WORDREPL()   Replaces particular double characters with others
WORDSWAP()   Exchanges double characters lying beside each other in a string
WORDTOCHAR() Exchanges double characters for individual ones