strings

下载来的一个看图软件的源代码

========================
Expression: string(5)
Object is a string : 5

========================
Expression: string(0.5)
Object is a string : 0.5

========================
Expression: string(-0.5)
Object is a string : -0.5

========================
Expression: string(true())
Object is a string : true

========================
Expression: string(false())
Object is a string : false

========================
Expression: concat("titi","toto")
Object is a string : tititoto

========================
Expression: concat("titi","toto","tata")
Object is a string : tititototata

========================
Expression: starts-with("tititoto","titi")
Object is a Boolean : true

========================
Expression: starts-with("tititoto","to")
Object is a Boolean : false

========================
Expression: contains("tititototata","titi")
Object is a Boolean : true

========================
Expression: contains("tititototata","toto")
Object is a Boolean : true

========================
Expression: contains("tititototata","tata")
Object is a Boolean : true

========================
Expression: contains("tititototata","tita")
Object is a Boolean : false

========================
Expression: substring("12345",2,3)
Object is a string : 234

========================
Expression: substring("12345",2)
Object is a string : 2345

========================
Expression: substring("12345",1.5,2.6)
Object is a string : 234

========================
Expression: substring("12345",0,3)
Object is a string : 12

========================
Expression: string-length("")
Object is a number : 0

========================
Expression: string-length("titi")
Object is a number : 4