| 12345678910111213141516171819202122232425262728293031323334 | 
							- string(5)
 
- string(0.5)
 
- string(-0.5)
 
- string(true())
 
- string(false())
 
- concat("titi","toto")
 
- concat("titi","toto","tata")
 
- concat("titi",'toto')
 
- concat("titi",'toto',"tata","last")
 
- starts-with("tititoto","titi")
 
- starts-with("tititoto","to")
 
- contains("tititototata","titi")
 
- contains("tititototata","toto")
 
- contains("tititototata","tata")
 
- contains("tititototata","tita")
 
- substring("12345",2,3)
 
- substring("12345",2)
 
- substring("12345",-4)
 
- substring("12345",3.4)
 
- substring("12345",3.6)
 
- substring("12345",1.5,2.6)
 
- substring("12345",2.2,2.2)
 
- substring("12345",0,3)
 
- substring("12345",-8,10)
 
- substring("12345",4,-10)
 
- substring("12345",0 div 0, 3)
 
- substring("12345",1, 0 div 0)
 
- substring("12345",1 div 0, 3)
 
- substring("12345",3,-1 div 0)
 
- substring("12345",-42, 1 div 0)
 
- substring("12345",-1 div 0, 1 div 0)
 
- substring("12345",-1 div 0,5)
 
- string-length("")
 
- string-length("titi")
 
 
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