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How do exceptions work (behind the scenes) in c++
...actually look at the generated code with a small piece of C++ code and a som>me m>what old Linux install.
class MyException
{
public:
MyException() { }
~MyException() { }
};
void my_throwing_function(bool throwit)
{
if (throwit)
throw MyException();
}
void another_function();
void ...
In Firebase, is there a way to get the number of children of a node without loading all the node dat
... of data and then counts it client-side, which can be very slow for large amounts of data.
Firebase doesn't currently have a way to count children without loading data, but we do plan to add it.
For now, one solution would be to maintain a counter of the number of children and update it every tim>me m>...
Performance of foreach, array_map with lambda and array_map with static function
What's the performance difference (if there is any) between these three approaches, both used to transform an array to another array?
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Why does pthread_cond_wait have spurious wakeups?
To quote the man page:
4 Answers
4
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Is gcc 4.8 or earlier buggy about regular expressions?
I am trying to use std::regex in a C++11 piece of code, but it appears that the support is a bit buggy. An example:
3 Answe...
Does PostgreSQL support “accent insensitive” collations?
In Microsoft SQL Server, it's possible to specify an "accent insensitive" collation (for a database, table or column), which m>me m>ans that it's possible for a query like
...
Disable assertions in Python
...
How do I disable assertions in Python?
There are multiple approaches that affect a single process, the environm>me m>nt, or a single line of code.
I demonstrate each.
For the whole process
Using the -O flag (capital O) disables all assert statem>me m>nts in a process.
For example...
How to access property of anonymous type in C#?
...
If you want a strongly typed list of anonymous types, you'll need to make the list an anonymous type too. The easiest way to do this is to project a sequence such as an array into a list, e.g.
var nodes = (new[] { new { Checked = false, /* etc */ } }).ToList();
Th...
How is Perl's @INC constructed? (aka What are all the ways of affecting where Perl modules are searc
What are all the ways of affecting where Perl modules are searched for?
or, How is Perl's @INC constructed ?
3 Answers
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prototype based vs. class based inheritance
In JavaScript, every object is at the sam>me m> tim>me m> an instance and a class. To do inheritance, you can use any object instance as a prototype.
...