Bayesian Econometrics Software

2.7 Strings

Strings of characters constitute another data type in BayES. Strings are deﬁned as words or phrases enclosed in double quote marks and they can be assigned id values, which can be subsequently used to refer to them. These can be concatenated or substrings extracted from them. Strings are used primarily for printing information on the BayES console or when working with directory statements. Example 2.6 demonstrates many of BayES’ capabilities in working with strings. The full list of functions that operate on strings is given in section B.15.

■ Example 2.6
▼ Input	▼ Output
// Define two strings, s1 and s2 s1 = "Hello "; s2 = "World!"; // Concatenate s1 and s2 and print the // result on the console s = strcat(s1,s2); print(s); // Print characters 1 to 5 from s print(substr(s,1:5)); // Compare two strings r1 = "BayES strings are "; if ( strcmp(s2,"WORLD!") ) r2 = "not case sensitive "; else r2 = "case sensitive "; end print(strcat(r1,r2)) ;	Hello World! Hello BayES strings are case sensitive

■ Example 2.6

▼ Input

▼ Output

// Define two strings, s1 and s2
s1 = "Hello ";
s2 = "World!";

// Concatenate s1 and s2 and print the
// result on the console
s = strcat(s1,s2);
print(s);

// Print characters 1 to 5 from s
print(substr(s,1:5));

// Compare two strings
r1 = "BayES strings are ";
if ( strcmp(s2,"WORLD!") )
r2 = "not case sensitive ";
else
r2 = "case sensitive ";
end
print(strcat(r1,r2)) ;

Hello World!
Hello
BayES strings are case sensitive

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