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StringTools

  

Compare

  

perform lexicographical order comparison of strings

  

CompareCI

  

perform case-insensitive lexicographical order comparison of strings

 

Calling Sequence

Parameters

Description

Thread Safety

Examples

Calling Sequence

Compare( s1, s2 )

CompareCI( s1, s2 )

Parameters

s1, s2

-

Maple strings

Description

• 

The Compare(s1, s2) function performs a lexicographical order comparison between its two string arguments, s1 and s2.

• 

The value true or false is returned according to the following table.

String Order

Return Value

 

 

s1 precedes s2

true

s1 is identical to s2

true

s1 follows s2

false

• 

The CompareCI(s1, s2) function performs a case-insensitive lexicographical order comparison between its two string arguments, s1 and s2.

• 

The value true or false is returned according to the table above, apart from distinctions in letter case.

• 

Note: The CompareCI procedure is equivalent to, but more efficient than, (s1, s2) -> Compare(LowerCase(s1), LowerCase( s2 )).

• 

These procedures are part of the StringTools package, and so they can be used in the form Compare(..) only after executing the command with(StringTools). However, they can always be accessed through the long form of the command by using the form StringTools[Compare](..).

Thread Safety

• 

The StringTools[Compare] and StringTools[CompareCI] commands are thread-safe as of Maple 15.

• 

For more information on thread safety, see index/threadsafe.

Examples

withStringTools:

Compareabc,abb

false

(1)

Compareabc,abd

true

(2)

Compareabc,abc

true

(3)

Compareabc,abcd

true

(4)

Compareabcd,abc

false

(5)

Compareabc,ABC

false

(6)

CompareXYZ,xyz

true

(7)

Compareabc,ABC

false

(8)

CompareCIabc,ABC

true

(9)

CompareABC,abc

true

(10)

CompareCIABC,abc

true

(11)

CompareCIabc,abb

false

(12)

See Also

lexorder

string

StringTools

StringTools[Capitalize]

StringTools[LowerCase]

 


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