CommonLength (Function)

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Strings, Buffer and UNICODE

Constants for managing character strings

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CommonLength (Function)

In french: TailleCommune

Returns the number of characters common to two characters strings (from the beginning or from the end).

Versions 15 and later

This function is now available for Android applications.

This function is now available for the Java applications.

New in version 15

This function is now available for Android applications.

This function is now available for the Java applications.

This function is now available for Android applications.

This function is now available for the Java applications.

Versions 17 and later

This function is now available for iPhone/iPad applications.

New in version 17

This function is now available for iPhone/iPad applications.

Versions 18 and later

This function is now available in Android Widget mode.

This function is now available in Windows Store apps mode.

New in version 18

This function is now available in Android Widget mode.

This function is now available in Windows Store apps mode.

This function is now available in Android Widget mode.

This function is now available in Windows Store apps mode.

Versions 21 and later

This function is now available in Apple Watch mode.

This function is now available in Universal Windows 10 App mode.

New in version 21

This function is now available in Apple Watch mode.

This function is now available in Universal Windows 10 App mode.

This function is now available in Apple Watch mode.

This function is now available in Universal Windows 10 App mode.

Example

// Compare from the beginning
CommonLength("ABCDE", "ABXYZ") // returns 2
// Compare from the end
CommonLength("VWXYZ", "ABXYZ", FromEnd) // returns 3

// Compare character by character
CommonLength("New York", "New Yorker") // returns 8
// Compare by entire word
CommonLength("New York", "New York City", WholeWord) // returns 3

// Compare while taking the case into account
CommonLength("ABCDE", "ABCdE") // returns 3
// Compare while ignoring the case
CommonLength("ABCDE", "ABCdE", IgnoreCase) // returns 5

Syntax

<Result> = CommonLength(<String1> , <String2> [, <Options>])

<Result>: Integer

Length of the part common to the two strings.

<String1>: Character string (with quotes)

String to compare.

<String2>: Character string (with quotes)

String to compare.

<Options>: Optional integer constant

Indicates the options for comparison:
FromBeginning Compare from the beginning of the strings
FromEnd Compare from the end of the strings
WholeWord Compare by entire word
IgnoreCase Compare while ignoring the case
These constants can be combined.
By default, the comparison is performed from the beginning of the string, character by character, by taking the case into account.

Remarks

Strings, Buffer and UNICODE

CommonLength applies to the buffers, the strings and the UNICODE strings.

Caution: The IgnoreCase and WholeWord constants do not apply to buffers.

You have the ability to use ANSI strings, Unicode strings and buffers in the different parameters of the function.

The following conversion rule is used for the Ansi systems (Windows or Linux):

It at least one of the strings is a buffer, all the strings are converted into buffers and the operation is performed with buffers,
otherwise, if at least one of the strings is in Unicode format, all the strings are converted into Unicode and the operation is performed in Unicode,
otherwise, the operation is performed in Ansi format.

The following conversion rule is used for the Unicode systems (Windows CE):

It at least one of the strings is a buffer, all the strings are converted into buffers and the operation is performed with buffers,
otherwise, the operation is performed in Unicode.

Business / GUI classification : Neutral code

Component : wd250vm.dll