I do not understand the compiler error when I add the const
keyword in the following function which works (and compiles) as
expected without the const keyword:
```d
public string getAmountSI(
in float lnumAmount
) const {
/// (1) given amount
string lstrAmount;
if (lnumAmount < 1_000f) {
lstrAmount = r"1K"c;
} else {
if (lnumAmount < 1_000_000f) {
lstrAmount = format(r"%.0fK"c, lnumAmount / 1_000f);
} else {
lstrAmount = format(r"%.0fM"c, lnumAmount / 1_000_000f);
}
}
return lstrAmount;
}
```
I used to put all attributes BEFORE the function name which now I
understand is completely wrong since they should follow the
parameter declaration section because putting them before affects
the function in other ways.
I first noted this while browsing the DUB package DB and came
accross https://code.dlang.org/packages/dscanner which states
(among a lot of checks):
- Placement of const, immutable, or inout before a function
return type instead of after the parameters
Is it because const for a function is intended to be used ONLY
within a structure/class (ie: a method) and thus the this error
(http://ddili.org/ders/d.en/const_member_functions.html) ?
Can anyone explain please ?
PS: I think I should re-check all the code I've written so far
for things like this that obviously I quite not completely
understand yet.
