there is a

evaluates to true if the specified object, file, folder, or process exists, false otherwise.

# Metadata

Platforms: desktop, server, mobile OS: mac, windows, linux, ios, android Introduced: 1.0 Security: disk, process

# Syntax

there is a {object | file filePath | folder folderPath | process procName}

# Params

- object : Any object reference. - filePath : The filePath specifies the name and location of a file you want to check. If you specify a name but not a location, LiveCode looks for the file in the defaultFolder. - folderPath : The folderPath specifies the name and location of a folder you want to check. If you specify a name but not a location, LiveCode looks for the folder in the defaultFolder. - procName : The name of any process that LiveCode started.

# Examples

there is a card button 1 -- evaluates to true if any card buttons exist

if there is a card ID 3445 then go card ID 3445 put (there is a file it) into fileIsThere

# Description

Use the there is a operator to make sure an object or file exists before working with it, or to find out whether there are any objects of a specified type.

The there is a operator is the logical inverse of the there is no operator. When one is true, the other is false.

The expression there is a stack stackName evaluates to true if the stack is open, if it is closed but loaded into memory, or if it appears in the stackFiles property of any open stack.

>*Tip:* To find out whether a stack is open, check its mode > property. A stack that is loaded into memory but is not open has > a mode of zero.

>*Note:* The there is a operator is implemented internally as a > function, and therefore has lower precedence than other > operators.

# Tags

file system,

# See

- **property:** stackFiles, mode - **operator:** there is no - **keyword:** file - **object:** stack - **function:** exists - **glossary:** property, loaded into memory, operator, precedence, folder, evaluate, process, object - **control structure:** function