I often fall into the following situation:
For example in C #:
string variavel= "x";
boolean b = (variavel == "a" || variavel == "d" ||.....|| variavel== "y");
Is there any way to simplify something like b = ("a" || "b" || .... "and")?
Besides being annoying, I think it will improve readability a lot if there is something similar. Switch case does not help much.
In C # you can do the following with LINQ :
bool b = new string[] {"a", "b", ...}.Any(s => s == variavel);
In C, if the strings are just characters, I'd use strchr()
char *b;
char variavel[100] = "x";
b = strchr("ad...y", *variavel);
// usa b como boolean
if (b) ok();
If the strings are actually sequences of 0 or more characters, you would opt for a sequence of if s chained
char variavel[100] = "XPTO";
if (strcmp(variavel, "AAAA") == 0) ok();
else if (strcmp(variavel, "DDDD") == 0) ok();
else if (strcmp(variavel, "....") == 0) ok();
else if (strcmp(variavel, "YYYY") == 0) ok();
I can not think of an alternative to successive comparisons. The best thing to do would be to put each comparison on a different line as in the case below, but would only improve visibility:
bool b = (
variavel == "a" ||
variavel == "b" ||
... ||
variavel == "y"
)