stl questions: how can I compare 2 stl list?

[silverburgh.meryl]

is there a better way to compare 2 stl list? I write a function like
this below, but I wonder if there is a better way to achieve that (e.g.
less code)?


bool isSame(const list<int>& srcList, const list<int>& destList ) {
if (srcList.size() != destList.size()) {
return false;
}

int size = srcList.size();
for (int i = 0; i < size; i++) {
if (srcList != destList) {
return false;
}
}

return true;
}

Thank you.

 

[Jakob Bieling]

is there a better way to compare 2 stl list? I write a function like
this below, but I wonder if there is a better way to achieve that
(e.g. less code)?


bool isSame(const list<int>& srcList, const list<int>& destList ) {
if (srcList.size() != destList.size()) {
return false;
}

int size = srcList.size();
for (int i = 0; i < size; i++) {
if (srcList != destList) {
return false;
}
}

return true;
}

I suppose you did not compile this, did you? Try it .. it will fail
to compile, because std::list does not have an 'operator []'.

Try this instead:

bool isSame (std::list <int> const& l1, std::list <int> const& l2)
{
if (l1.size () == l2.size ())
return std::equal (l1.begin (), l1.end (), l2.begin ());
else
return false;
}

hth

 

[lallous]

Hello

AFAIK, lists implement '==' operator.

So just test as:

bool isSame = list1 == list2;

Also check the std::equal()

 

[peter koch]

(e-mail address removed) skrev:

is there a better way to compare 2 stl list? I write a function like
this below, but I wonder if there is a better way to achieve that (e.g.
less code)?


bool isSame(const list<int>& srcList, const list<int>& destList ) {
if (srcList.size() != destList.size()) {
return false;
}

int size = srcList.size();
for (int i = 0; i < size; i++) {
if (srcList != destList) {
return false;
}
}

return true;
}

Thank you.

How about list1 == list2?

/Peter

 

[diligent.snail]

is there a better way to compare 2 stl list? I write a function like
this below, but I wonder if there is a better way to achieve that (e.g.
less code)?


bool isSame(const list<int>& srcList, const list<int>& destList ) {
if (srcList.size() != destList.size()) {
return false;
}

int size = srcList.size();
for (int i = 0; i < size; i++) {
if (srcList != destList) {
return false;
}
}

return true;
}

Thank you.

Hello,

How about operator ==() ?
See
"http://www.dinkumware.com/manuals/reader.aspx?b=p/&h=list.html#operator=="

 

[Markus Schoder]

is there a better way to compare 2 stl list? I write a function like
this below, but I wonder if there is a better way to achieve that (e.g.
less code)?


bool isSame(const list<int>& srcList, const list<int>& destList ) {
if (srcList.size() != destList.size()) {
return false;
}

int size = srcList.size();
for (int i = 0; i < size; i++) {
if (srcList != destList) {
return false;
}
}

return true;
}

Thank you.

What's wrong with

srcList == destList

?