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StringTools

  

Join

  

join a list of strings

  

CaseJoin

  

join a list of strings, mapping each initial lowercase letter to uppercase

 

Calling Sequence

Parameters

Description

Examples

Calling Sequence

Join( stringList, sep )

CaseJoin( stringList )

Parameters

stringList

-

list of strings; strings to join

sep

-

(optional) string; string separator

Description

• 

The Join(stringList, sep) command concatenates the ordered list of strings stringList, separated by an optional fixed string sep. If parameter sep is not included in the calling sequence, the concatenated strings are separated by a single space character. The string formed by the concatenation of the strings in stringList is returned.

• 

The first calling sequence is equivalent to

sJoins,"";

• 

If stringList is the empty list, then the result is an empty string. Otherwise, the strings in stringList are concatenated in order, with the separator string sep between each consecutive pair. If stringList has only one member, that member is the result string. (The separator string is used only in case there are at least two strings in stringList.)

• 

The Join procedure is an approximate inverse of the Split procedure.

• 

The CaseJoin(stringList) command concatenates the strings in stringList after first mapping each initial lowercase letter to uppercase. Characters that are not lowercase are not modified in the concatenated string.

Examples

withStringTools:

LSplitThis:is:a:test.,:

L:=This,is,a,test.

(1)

JoinL,

This is a test.

(2)

Joina,b,c,

abc

(3)

CaseJoinlinear,algebra

LinearAlgebra

(4)

CaseJointhe,cat,sat,on,the,mat.

TheCatSatOnTheMat.

(5)

The following procedure formats the prime factorisation of a positive integer in LaTeX.

TeXFactors := proc( n :: posint )
  local F := ifactors( n )[ 2 ];
  local S := map( pp -> `if`( pp[2] = 1, sprintf( "{%d}", pp[1] ), sprintf( "{%d}^{%d}", op( pp ) ) ), F );
  StringTools:-Join( S, "\\cdot" )
end proc:

TeXFactors300

{2}^{2}\cdot{3}\cdot{5}^{2}

(6)

See Also

string

StringTools

StringTools[CaseSplit]

StringTools[Split]

 


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