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How to run a single RSpec test?
...cus tag to the it, context or describe to run only that block:
it 'runs a test', :focus do
...test code
end
RSpec documentation:
https://www.rubydoc.info/github/rspec/rspec-core/RSpec/Core/Configuration#filter_run_when_matching-instance_method
...
What is the performance cost of having a virtual method in a C++ class?
...ory. This is always a significant stall: on Xenon, about 650 cycles (by my tests).
However this isn't a problem specific to virtual functions because even a direct function call will cause a miss if you jump to instructions that aren't in cache. What matters is whether the function has been run be...
How do I check if a string contains another string in Swift?
...
Interesting. I only tested this on a playground. I will give it a try later when I'm on my computer.
– Cezar
Jun 15 '14 at 3:36
...
Python - When to use file vs open
...ead of invoking this
constructor directly. file is more
suited to type testing (for example,
writing "isinstance(f, file)").
Also, file() has been removed since Python 3.0.
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How to pass parameters to ThreadStart method in Thread?
...
How about this: (or is it ok to use like this?)
var test = "Hello";
new Thread(new ThreadStart(() =>
{
try
{
//Staff to do
Console.WriteLine(test);
}
catch (Exception ex)
{
throw;
}
})).Start();
...
Reference: What is variable scope, which variables are accessible from where and what are “undefined
...iable is available to the function without any problem.
<?php
function test() {
echo $_ENV["user"];
}
The general rule of "globals are bad" is typically amended in PHP to "globals are bad but superglobals are alright," as long as one is not misusing them. (All these variables are writable,...
LINQ order by null column where order is ascending and nulls should be last
...=> f.SomeString)
This works with LINQ 2 objects in memory. I did not test it with EF or any DB ORM.
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Concept of void pointer in C programming
...ferent type without an explicit cast:
void abc(void *a, int b)
{
int *test = a;
/* ... */
This doesn't help with writing your function in a more generic way, though.
You can't dereference a void * with converting it to a different pointer type as dereferencing a pointer is obtaining the ...
Unresolved reference issue in PyCharm
...
After testing all workarounds, i suggest you to take a look at Settings -> Project -> project dependencies and re-arrange them.
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Parse large JSON file in Nodejs
...l be extremely memory efficient. It will also be extremely fast. A quick test showed I processed 10,000 rows in under 15ms.
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