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What is wrong with using goto? [duplicate]
...d has many valid uses. The best that comes to mind is structured resource freeing in C programs.
Where goto's go wrong is when they are abused. Abuse of gotos can lead to thoroughly unreadable and unmaintainable code.
s...
Command line progress bar in Java
...ample but I'm assuming this is the same for System.out.print in Java.
Feel free to correct me if I'm wrong.
Basically, you want to write out the \r escape character to the start of your message
which will cause the cursor to return to the start of the line (Line Feed) without moving to the next lin...
Using try vs if in python
...02772912802175
So, whereas an if statement always costs you, it's nearly free to set up a try/except block. But when an Exception actually occurs, the cost is much higher.
Moral:
It's perfectly OK (and "pythonic") to use try/except for flow control,
but it makes sense most when Exceptions are ...
Dealing with nginx 400 “The plain HTTP request was sent to HTTPS port” error
...
@bobojam feel free to include the explanation from my answer, so that yours will be more complete. I've asked OP author to accept you answer.
– Alexander Azarov
Dec 27 '12 at 8:49
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How to play audio?
...ash, there's a setting for that, preferFlash=false
It supports 100% Flash-free audio on iPad, iPhone (iOS4) and other HTML5-enabled devices + browsers
Use is as simple as:
<script src="soundmanager2.js"></script>
<script>
// where to find flash SWFs, if needed...
soundMa...
How to get the caller's method name in the called method?
...
https://gist.github.com/2151727 (rev 9cccbf)
# Public Domain, i.e. feel free to copy/paste
# Considered a hack in Python 2
import inspect
def caller_name(skip=2):
"""Get a name of a caller in the format module.class.method
`skip` specifies how many levels of stack to skip while gett...
How to “return an object” in C++?
...Thing> thing = calculateThing();
// working with thing
// auto_ptr frees thing
}
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Callback functions in C++
...bi::__cxa_demangle(typeid(TR).name(), nullptr,
nullptr, nullptr), std::free);
std::string r = own != nullptr?own.get():typeid(TR).name();
if (std::is_const<TR>::value)
r += " const";
if (std::is_volatile<TR>::value)
r += " volatile";
if (std::is_lvalue_reference<T&...
Iterate through a C++ Vector using a 'for' loop
...
auto, free begin/end are also C++11. And too, you should use ++it, instead of it++ in many cases.
– ForEveR
Oct 3 '12 at 5:55
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Difference between 'new operator' and 'operator new'?
...y.
The new operator is what you normally use to create an object from the free store:
my_class *x = new my_class(0);
The difference between the two is that operator new just allocates raw memory, nothing else. The new operator starts by using operator new to allocate memory, but then it invokes ...