ILOG OPL Development Studio Language Reference Manual

String operatorsString operatorsSyntaxstring1 + string2EffectReturns a string containing the concatenation of string1 and string2.Examples:"Hello," + " world" "Hello, world"When the operator + is used to add a string to a nonstring value, the nonstring valueis first converted to a string.Examples:"Your age is " + 23 -> "Your age is 23" 23 + " is your age" -> "23 is your age"string1 == string2string1 != string2The operator == returns the Boolean true if string1 and string2 are identical,and false otherwise.Two strings are identical if they have the same length and containthe same sequence of characters. The operator != is the converse of ==.Examples:"a string" == "a string" -> true "a string" == "another string" -> false "a string" == "ASTRING" -> false "a string" != "a string" -> false "a string" != "another string" -> trueWhen the operators == and != are used to compare a string with a number, the stringis first converted to a number and the two numbers are compared numerically.Examples:"12" == "+12" -> false 12 == "+12" -> truestring1 < string2string1 string2string1 >= string2The operator < returns true if string1 strictly precedes string2 lexicographically,and false otherwise. The operator true "a" < "abc" -> true "xyz" < "abc" -> false "abc" < "abc" -> false"abc" > "xyz" -> false "a" > "abc" -> false "xyz" > "abc" -> true Etc.When one of these operators is used to compare a string with a number, the stringis first converted to a number and the two numbers are compared numerically. In allother cases, the other argument is first converted to a string.Examples:"10" > "2" -> false 10 > "2" -> true 123 < "2" -> falseHint: Autocasting may cause unexpected behaviors.I L O G O P L D E V E L O P M E N T S T U D I O L A N G U A G ER E F E R E N C E M A N U A L229