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C++ static virtual members?
...what would happen when you called Object::GetTypeInformation()? It can't know which derived class version to call since there's no object associated with it.
You'll have to make it a non-static virtual function to work properly; if you also want to be able to call a specific derived class's versio...
How to overcome TypeError: unhashable type: 'list'
...nto a list where each element is a line
for line in f.readlines():
# Now we split the file on `x`, since the part before the x will be
# the key and the part after the value
line = line.split('x')
# Take the line parts and strip out the spaces, assigning them to the variables
#...
What's the difference between using CGFloat and float?
... to make your app 64-bit clean and try running it as such, since most Macs now have 64-bit CPUs and Snow Leopard is fully 64-bit, including the kernel and user applications. Apple's 64-bit Transition Guide for Cocoa is a useful resource.
...
What is the difference between .text, .value, and .value2?
...book.Sheets(1)
.Range(rngAddress).Offset(0, 1).ClearContents
beginTime = Now
For Each aCell In .Range(rngAddress).Cells
If useValue2 Then
aCell.Offset(0, 1).Value2 = aCell.Value2 + aCell.Offset(-1, 1).Value2
Else
aCell.Offset(0, 1).Value = aCell.Value + aCell.Offset(-1, 1)...
What to do Regular expression pattern doesn't match anywhere in string?
... # ...except for the />, which is grabbed here
)/xgm;
# Now each member of @input_tags is something like <input type="hidden" name="SaveRequired" value="False" />
foreach my $input_tag (@input_tags)
{
my $hash_ref = {};
# Now extract each of the fields one at a time.
...
Which is more efficient: Multiple MySQL tables or one large table?
...multiple values in future. e.g. credit limit is a single value field as of now. But tomorrow, you may decide to change the values as (date from, date to, credit value). Split tables might come handy now.
My vote would be for multiple tables - with data appropriately split.
Good luck.
...
How do I use 'git reset --hard HEAD' to revert to a previous commit? [duplicate]
I know that Git tracks changes I make to my application, and it holds on to them until I commit the changes, but here's where I'm hung up:
...
How can I reliably determine the type of a variable that is declared using var at design time?
... a local can be expensive so we want to defer that work if we need to.
We now have a lazily-built database that can tell us the type of every local. So, getting back to that "foo." -- we figure out which statement the relevant expression is in and then run the semantic analyzer against just that st...
How can I access “static” class variables within class methods in Python?
... bar = 1
@classmethod
def bah(cls):
print cls.bar
Now if bah() has to be instance method (i.e. have access to self), you can still directly access the class variable.
class Foo(object):
bar = 1
def bah(self):
print self.bar
...
Is recursion ever faster than looping?
I know that recursion is sometimes a lot cleaner than looping, and I'm not asking anything about when I should use recursion over iteration, I know there are lots of questions about that already.
...