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Try-finally block prevents StackOverflowError
...(2^N) where N is the maximum stack depth.
Imagine the maximum depth is 5
foo() calls
foo() calls
foo() calls
foo() calls
foo() which fails to call foo()
finally calls
foo() which fails to call foo()
finally
foo() calls
...
What does the exclamation mark do before the function?
...s just a function declaration. You would need an invocation, foo(), to actually run the function.
Now, when we add the seemingly innocuous exclamation mark: !function foo() {} it turns it into an expression. It is now a function expression.
The ! alone doesn't invoke the function, of course, but w...
Can virtual functions have default parameters?
... or a derived class' -- is determined by the static type used to make the call to the function. If you call through a base class object, pointer or reference, the default denoted in the base class is used. Conversely, if you call through a derived class object, pointer or reference the defaults de...
How to sort an IEnumerable
How can I sort an IEnumerable<string> alphabetically. Is this possible?
4 Answers
...
Simple Getter/Setter comments
...
I usually just fill the param part for setters, and the @return part for getters:
/**
*
* @param salary salary to set (in cents)
*/
public void setSalary(float salary);
/**
* @return current salary (in cents, may be imagin...
How to detect if app is being built for device or simulator in Swift
... ...
#endif
After Swift 4.1 version
Latest use, now directly for all in one condition for all types of simulators need to apply only one condition -
#if targetEnvironment(simulator)
// your simulator code
#else
// your real device code
#endif
For more clarification, you can check S...
PyLint “Unable to import” error - how to set PYTHONPATH?
...])'
or
[Master]
init-hook='sys.path = list(); sys.path.append("/path/to/foo")'
.. and
pylint --rcfile /path/to/pylintrc /path/to/module.py
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slim dynamic conditional class [closed]
...to include class in list, then compact array to remove nil elements and finally join all together.
div class=(["cday", "col-md-1", day.day == 1 ? "col-md-offset-#{day.cwday-1}" : nil].compact.join(' '))
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Accurate way to measure execution times of php scripts
...How to use it:
include('timeit.php');
const SOME_CODE = '
strlen("foo bar");
';
$t = timeit(SOME_CODE);
print "$t[0] loops; $t[2] per loop\n";
Result:
$ php x.php
100000 loops; 18.08us per loop
Disclaimer: I am the author of this Gist
EDIT: timeit is now a separate, self-contained pr...
How to add elements of a Java8 stream into an existing List
...ting collection.
The reason is that collectors are designed to support parallelism, even over collections that aren't thread-safe. The way they do this is to have each thread operate independently on its own collection of intermediate results. The way each thread gets its own collection is to call ...