Tag Archives: IsNegative()

Harbour Check Functions

Posted on by vivaclipper

Check Functions

IsAffirm Checks if passed char is an affirmation char
IsAlpha Checks if leftmost character in a string is an alphabetic character
IsBin Check if the value is a Binary Number
IsDec Check if the value is a Decimal Number
IsDigit Checks if leftmost character is a digit character
IsDisk Verify if a drive is ready
IsHexa Check if the value is a Hexal Number
IsLeap Tests if a specific year is a leap year
IsLeapYear Checks if the given date is a leap year
IsLower Checks if leftmost character is an lowercased letter
IsNegative Checks if passed char is a negation char
IsOctal Check if the value is a Octal Number
IsUpper Checks if leftmost character is an uppercased letter.
HB_Is_CStructure Checks if the value is a CStructure
HB_IsArray Tests if the value returned by an expression is an array
HB_IsBlock Tests if the value returned by an expression is a Code block
HB_IsByRef Tests if a parameter is passed by reference
HB_IsChar Tests if the value returned by an expression is char type
HB_IsDate Tests if the value returned by an expression is a Date
HB_IsDateTime Tests if the value returned by an expression is a DateTime value
HB_IsEvalItem Undocumented
hb_IsFunction Determine wheter exists (linkable) a function
HB_IsHash Tests if the value returned by an expression is a Hash
HB_IsHashKey Tests if the value returned by an expression is a Hash Key
HB_IsLogical Tests if the value returned by an expression is a logical value
HB_IsMemo Tests if the value returned by an expression is a Memo value
HB_IsNil Tests if the value returned by an expression is NIL
HB_IsNull Tests if the value returned by an expression is empty
HB_IsNumeric Tests if the value returned by an expression is a numeric value
HB_IsObject Tests if the value returned by an expression is an object
HB_IsPointer Tests if the value returned by an expression is a pointer
hb_IsPrinter ( Probably ) same as IsPrinter()
hb_IsRegex Determine is this value a regular expression
hb_IsRegexString Checks if a character string is a compiled regular expression
hb_IsService Undocumented
HB_IsString Checks if the value is a string
HB_IsSymbol Checks if the value is a symbol
HB_IsTimeStamp Checks if the value is a TimeStamp

LanguageAndNationMSG()

Posted on by vivaclipper

Language and Nation MSG()

Returns international strings messages.

Syntax

      Language and Nation MSG( <nMsg> ) --> <cMessage>

Arguments

<nMsg> is the message number you want to get.

Returns

<cMessage> If <nMsg> is a valid message selector, returns the message. If <nMsg> is nil returns “Invalid Argument”, and if <nMsg> is any other type it returns an empty string.

Description

Language and Nation MSG() returns international message descriptions.

Examples

      // Displays "Sure Y/N: "  and waits until user enters Y
      // Y/N is the string for NATIONMSG( 12 ) with default natmsg module.
      DO WHILE ! ISAFFIRM( cYesNo )
         ACCEPT "Sure " + NATIONMSG( 12 ) + ": " TO cYesNo
      ENDDO

Compliance

Clipper

Files

Library is rtl

Seealso

ISAFFIRM(), ISNEGATIVE()

IsNegative()

Posted on by vivaclipper

ISNEGATIVE()

Checks if passed char is a negation char.

Syntax

      ISNEGATIVE( <cChar> ) --> <lTrueOrFalse>

Arguments

<cChar> is a char or string of chars

Returns

<lTrueOrFalse> True if passed char is a negation char, otherwise false.

Description

This function is used to check if a user’s input is true or not according to the msgxxx module used.

Examples

      // Wait until user enters N
      DO WHILE ! ISNEGATIVE( cYesNo )
         ACCEPT "Sure: " TO cYesNo
      ENDDO

Compliance

Clipper

Files

Library is rtl

Seealso

ISAFFIRM(), NATIONMSG()

IsAffirm()

Posted on by vivaclipper

ISAFFIRM()

Checks if passed char is an affirmation char

Syntax

      ISAFFIRM( <cChar> ) --> <lTrueOrFalse>

Arguments

<cChar> is a char or string of chars

Returns

<lTrueOrFalse> True if passed char is an affirmation char, otherwise false

Description

This function is used to check if a user’s input is true or not according to the msgxxx module used.

Examples

      // Wait until user enters Y
      DO WHILE ! ISAFFIRM( cYesNo )
         ACCEPT "Sure: " TO cYesNo
      ENDDO

Compliance

Clipper

Files

Library is rtl

Seealso

ISNEGATIVE(), NATIONMSG()