[Date Prev][Date Next][Thread Prev][Thread Next]
- Subject: Re: String equality?
- From: Chris Marrin <chris@...>
- Date: Mon, 05 Dec 2005 08:27:54 -0800
Mark Meijer wrote:
You could always combine the pointer equality and strcmp() (and/or other
methods of equality testing), e.g:
char* myFoo = "foo";
char* prop = lua_tostring(L, -1);
if((prop == myFoo) || (strcmp(prop, myFoo) == 0))
Obviously if the pointers are equal then you are sure the strings are
equal, so there's no harm in using this to your advantage (without
relying solely on this) if chances are good that you can prevent the
strcmp that way (or any other performance hits that other approaches
But this is guaranteed to fail, isn't it? A Lua originated string is
never going to have the same pointer as a C-generated string, right?
chris marrin ,""$,
firstname.lastname@example.org b` $ ,,.
mP b' , 1$'
,.` ,b` ,` :$$'
,|` mP ,` ,mm
,b" b" ,` ,mm m$$ ,m ,`P$$
m$` ,b` .` ,mm ,'|$P ,|"1$` ,b$P ,` :$1
b$` ,$: :,`` |$$ ,` $$` ,|` ,$$,,`"$$ .` :$|
b$| _m$`,:` :$1 ,` ,$Pm|` ` :$$,..;"' |$:
P$b, _;b$$b$1" |$$ ,` ,$$" ``' $$
```"```'" `"` `""` ""` ,P`
"As a general rule,don't solve puzzles that open portals to Hell"'