fileExists

 

 

Overview

The fileExists function checks to see if the specified file exists.

Usage

The fileExists function is used to see if the specified file exists.

For instance the following Lisp code shows how to check whether or not a file exists.

(fileExists "C:/Test/myfile.xls") ;; Returns true if the specified file exists

 

Syntax

Expression:(fileExists filePathName) ;; Returns true if the file exists

Arguments Name Type Description
Argument:filePathNameString Text The file path name to be checked

Returns: Returns true if the file exists

 

Examples

Here are a number of links to Lambda coding examples which contain this instruction in various use cases.

 

Argument Types

Here are the links to the data types of the function arguments.

String Text

Here are also a number of links to functions having arguments with any of these data types.

*= addMethod appendWriteln append
balance binaryInsert binarySearch boolean
char character clean closeLog
code compareEQ compareGE compareGT
compareLE compareLT compareNE compare
comparison compress cons count
date day days360 debugBrowsableProcs
debugDetective debugEval dimension disassemble
display downcase encode evalInSyncLocalContext
eval exportCsv exportSbf exportTab
fdisplay fileClose fileCopy fileDir
fileDisplay fileEraseDir fileErase fileExists
fileMakeDir fileOpen fileReadAll fileReadRecord
fileRead fileSizeOf fileWriteAll fileWrite
filewriteln find hashString hour
importCsv importSbf importTab insert
inside inspect integer isAtom
isBitVector isBoolean isByteVector isCharAlphabetic
isCharAlphanumeric isCharLowercase isCharName isCharNumeric
isCharUppercase isCharWhitespace isChar isCharacter
isComplex isDate isDictionary isDirectory
isEqual isError isFloatVector isIdentical
isInside isIntegerVector isInteger isLambda
isMatrix isMember isMoney isNumberMatrix
isNumberVector isNumber isObjectVector isObject
isPair isPcodeVector isString isStructure
isSymbol isText isType isVector
julian left length list
loadModule loadWorkspace macroReplace makeQuotedList
makeQuotedSymbol member mid minute
money month new number
offset openLog pair parent
parse pointer qt ref
remove replace rept right
run saveImmediate saveModule saveObject
saveRepository saveWorkspace second setCar
setCdr setLastCdr set setf
setq sizeof sort sql
stringCiEQ stringCiGE stringCiGT stringCiLE
stringCiLT stringCiNE stringFill stringToBVector
stringToVector string submit substitute
substringCiEQ substringCiGE substringCiGT substringCiLE
substringCiLT substringCiNE substringEQ substringFill
substringGE substringGT substringLE substringLT
substringNE substring symbolToTypeCode symbol
system text time trim
type uniqueInsert upcase vectorFill
writelg writeln year

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